Document:

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                                                                     Exhibit 4.5

THE REGISTERED HOLDER OF THIS PURCHASE OPTION, BY ITS ACCEPTANCE HEREOF, AGREES
THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS PURCHASE OPTION, EXCEPT AS HEREIN
PROVIDED, AND THE REGISTERED HOLDER OF THIS PURCHASE OPTION AGREES THAT IT WILL
NOT SELL, TRANSFER, ASSIGN, PLEDGE OR HYPOTHECATE THIS PURCHASE OPTION FOR A
PERIOD OF ONE YEAR FOLLOWING THE EFFECTIVE DATE (DEFINED BELOW) TO ANYONE OTHER
THAN (I) H.C. WAINWRIGHT & CO., INC. AND ITS AFFILIATES ("H.C. WAINWRIGHT") OR
AN UNDERWRITER OR A SELECTED DEALER IN CONNECTION WITH THE OFFERING (DEFINED
HEREIN), OR (II) A BONA FIDE OFFICER, PARTNER OR EMPLOYEE OF H.C. WAINWRIGHT OR
OF ANY SUCH UNDERWRITER OR SELECTED DEALER.

THIS PURCHASE OPTION IS NOT EXERCISABLE PRIOR TO THE LATER OF (I) THE
CONSUMMATION BY HARBOR BUSINESS ACQUISITION CORP. ("COMPANY") OF A MERGER,
CAPITAL STOCK EXCHANGE, ASSET OR STOCK ACQUISITION OR OTHER SIMILAR BUSINESS
COMBINATION ("BUSINESS COMBINATION") (AS DESCRIBED MORE FULLY IN THE COMPANY'S
REGISTRATION STATEMENT (DEFINED HEREIN)) AND (II) ______________, 2007. THIS
PURCHASE OPTION SHALL BE VOID AFTER 5:00 P.M. EASTERN TIME, _____________, 2011.

                              UNIT PURCHASE OPTION

                               FOR THE PURCHASE OF

                                  250,000 UNITS

                                       OF

                        HARBOR BUSINESS ACQUISITION CORP.

         1. Purchase Option.

                  THIS CERTIFIES THAT, in consideration of $100 duly paid by or
on behalf of H.C. Wainwright & Co., Inc. (collectively, with its successors and
permitted assigns and/or transferees, the "Holder"), as registered owner of this
Purchase Option, to Harbor Business Acquisition Corp. (the "Company"), Holder is
entitled, at any time or from time to time upon the later of (i) the
consummation of a Business Combination and (ii) ____________, 2007
("Commencement Date"), and at or before 5:00 p.m., Eastern Time, ____________,
2011 ("Expiration Date"), but not thereafter, to subscribe for, purchase and
receive, in whole or in part, up to Two Hundred and Fifty Thousand (250,000)
units (the "Units") of the Company, each Unit consisting of one share of common
stock of the Company, par value $0.001 per share (the "Common Stock"), and two
warrants (the "Warrant(s)") expiring four years from the effective date
("Effective Date") of the registration statement ("Registration Statement")
pursuant to which Units are offered for sale to the public (the "Offering").
Each Warrant contains the same terms and conditions as the warrants included in
the Units being registered for sale to the public by way of the Registration
Statement (the "Public Warrants"), including that the Warrants underlying the
Units comprising this Purchase Option have an exercise price of $5.00 per share.
If the Expiration Date is a day on which banking institutions are authorized by
law to close, then this Purchase Option may be exercised on the next succeeding
day which is not such a day in accordance with the terms herein. During the
period ending on the Expiration Date, the Company agrees not to take any action
that would terminate the Purchase Option. This Purchase Option is initially
exercisable at $6.60 per Unit so purchased; provided, however, that upon the
occurrence of any of the events specified in Section 6 hereof, the rights
granted by this Purchase Option, including the exercise price per Unit and the
number of Units (and shares of Common Stock and Warrants) to be received upon
such exercise, shall be adjusted as therein specified. The term "Exercise Price"
shall mean the initial exercise price or the adjusted exercise price, depending
on the context.
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         2. Exercise.

                  2.1 Exercise Form. In order to exercise this Purchase Option,
the exercise form attached hereto must be duly executed and completed and
delivered to the Company, together with this Purchase Option and payment of the
Exercise Price for the Units being purchased payable in cash or by certified
check or official bank check. If the subscription rights represented hereby
shall not be exercised at or before 5:00 p.m., New York City Time, on the
Expiration Date, this Purchase Option shall become and be void without further
force or effect, and all rights represented hereby shall cease and expire.

                  2.2 Legend. Each certificate for the securities purchased
under this Purchase Option shall bear a legend as follows unless such securities
have been registered under the Securities Act of 1933, as amended (the "Act"):

                      "The securities represented by this certificate have
                      not been registered under the Securities Act of 1933,
                      as amended ("Act") or applicable state law. The
                      securities may not be offered for sale, sold or
                      otherwise transferred, in whole or in part, except
                      pursuant to an effective registration statement under
                      the Act, or pursuant to an exemption from
                      registration under the Act and applicable state law."

                                      -2-
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                  2.3 Cashless Exercise. In lieu of the payment of the Exercise
Price multiplied by the number of Units for which this Purchase Option is
exercisable (and in lieu of being entitled to receive Common Stock and Warrants)
in the manner required by Section 2.1, the Holder shall have the right (but not
the obligation) to convert any exercisable but unexercised portion of this
Purchase Option into Units (the "Conversion Right") as follows: upon exercise of
the Conversion Right, the Company shall deliver to the Holder (without payment
by the Holder of any of the Exercise Price in cash) that number of shares of
Common Stock and Warrants comprising that number of Units equal to the quotient
obtained by dividing (x) the "Value" (as defined below) of the portion of the
Purchase Option being converted by (y) the Current Market Value (as defined
below) of the portion of the Purchase Option being converted. The "Value" of the
portion of the Purchase Option being converted shall equal the remainder derived
from subtracting (a) (i) the Exercise Price multiplied by (ii) the number of
Units underlying the portion of this Purchase Option being converted from (b)
the Current Market Value of a Unit multiplied by the number of Units underlying
the portion of the Purchase Option being converted. As used herein, the term
"Current Market Value" per Unit at any date means: (A) in the event that neither
the Units nor Warrants are still trading, the remainder derived from subtracting
(x) the exercise price of the Warrants multiplied by the number of shares of
Common Stock issuable upon exercise of the Warrants underlying one Unit from (y)
(i) the Current Market Price of the Common Stock multiplied by (ii) the number
of shares of Common Stock underlying one Unit, which shall include the shares of
Common Stock underlying the Warrants included in such Unit; (B) in the event
that the Units, Common Stock and Public Warrants are still trading, (i) if the
Units are listed on a national securities exchange or quoted on the Nasdaq
Global Market, Nasdaq Capital Market or NASD OTC Bulletin Board (or successor
such as the Bulletin Board Exchange), the last sale price of the Units in the
principal trading market for the Units as reported by the exchange, Nasdaq or
the NASD, as the case may be, on the last trading day preceding the date in
question; or (ii) if the Units are not listed on a national securities exchange
or quoted on the Nasdaq Global Market, Nasdaq Capital Market or the NASD OTC
Bulletin Board (or successor exchange), but is traded in the residual
over-the-counter market, the closing bid price for Units on the last trading day
preceding the date in question for which such quotations are reported by the
Pink Sheets, LLC or similar publisher of such quotations; and (C) in the event
that the Units are not still trading but the Common Stock and Warrants
underlying the Units are still trading, the Current Market Price of the Common
Stock plus the product of (x) the Current Market Price of the Warrants and (y)
the number of shares of Common Stock underlying the Warrants included in one
Unit. The "Current Market Price" shall mean (i) if the Common Stock (or
Warrants, as the case may be) is listed on a national securities exchange or
quoted on the Nasdaq Global Market, Nasdaq Capital Market or NASD OTC Bulletin
Board (or successor such as the Bulletin Board Exchange), the last sale price of
the Common Stock (or Warrants) in the principal trading market for the Common
Stock as reported by the exchange, Nasdaq or the NASD, as the case may be, on
the last trading day preceding the date in question; (ii) if the Common Stock
(or Warrants, as the case may be) is not listed on a national securities
exchange or quoted on the Nasdaq Global Market, Nasdaq Capital Market or the
NASD OTC Bulletin Board (or successor exchange), but is traded in the residual
over-the-counter market, the closing bid price for the Common Stock (or
Warrants) on the last trading day preceding the date in question for which such
quotations are reported by the Pink Sheets, LLC or similar publisher of such
quotations; and (iii) if the fair market value of the Common Stock cannot be
determined pursuant to clause (i) or (ii) above, such price as the Board of
Directors of the Company shall determine, in good faith. In the event the Public
Warrants have expired and are no longer exercisable, no "Value" shall be
attributed to the Warrants underlying this Purchase Option. Additionally, in the
event that this Purchase Option is exercised pursuant to this Section 2.3 and
the Public Warrants are still trading, the "Value" shall be reduced by the
difference between the Warrant Exercise Price and the exercise price of the
Public Warrants multiplied by the number of Warrants underlying the Units
included in the portion of this Purchase Option being converted.

                                      -3-
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                  2.4 Mechanics of Cashless Exercise. The Cashless Exercise
Right may be exercised by the Holder on any business day on or after the
Commencement Date and not later than the Expiration Date by delivering the
Purchase Option with the duly executed exercise form attached hereto with the
cashless exercise section completed to the Company, exercising the Cashless
Exercise Right and specifying the total number of Units the Holder will purchase
pursuant to such Cashless Exercise Right.

                  2.5 Net Cash Settlements. In no event will the Company be
required to net cash settle the exercise of the Purchase Option or the Warrants
underlying the Purchase Option, regardless of whether any or all of the
Registrable Securities have been registered by the Company pursuant to an
effective registration statement. The holder of the Purchase Option and the
Warrants underlying the Purchase Option will not be entitled to exercise the
Purchase Option or the Warrants underlying such Purchase Option unless a
registration statement is effective, or an exemption from the registration
requirements is available at such time and, if the holder is not able to
exercise the Purchase Option or underlying Warrants, the Purchase Option and/or
the underlying Warrants, as applicable, will expire worthless.

         3. Transfer.

                  3.1 General Restrictions. The registered Holder of this
Purchase Option, by its acceptance hereof, agrees that it will not sell,
transfer, assign, pledge or hypothecate this Purchase Option for a period of one
year following the Effective Date to anyone other than (i) H.C. Wainwright or an
underwriter or a selected dealer in connection with the Offering, or (ii) a bona
fide officer or partner of H.C. Wainwright or of any such underwriter or
selected dealer. On and after the first anniversary of the Effective Date,
transfers to others may be made subject to compliance with or exemptions from
applicable securities laws. In order to make any permitted assignment, the
Holder must deliver to the Company the assignment form attached hereto duly
executed and completed, together with the Purchase Option and payment of all
transfer taxes, if any, payable in connection therewith. The Company shall
within five business days transfer this Purchase Option on the books of the
Company and shall execute and deliver a new Purchase Option or Purchase Options
of like tenor to the appropriate assignee(s) expressly evidencing the right to
purchase the aggregate number of Units purchasable hereunder or such portion of
such number as shall be contemplated by any such assignment.

                  3.2 Restrictions Imposed by the Act. The securities evidenced
by this Purchase Option shall not be transferred unless and until (i) the
Company has received the opinion of counsel for the Holder that the securities
may be transferred pursuant to an exemption from registration under the Act and
applicable state securities laws, the availability of which is established to
the reasonable satisfaction of the Company (the Company hereby agreeing that the
opinion of Lowenstein Sandler PC shall be deemed satisfactory evidence of the
availability of an exemption), or (ii) a registration statement or a
post-effective amendment to the Registration Statement relating to such
securities has been filed by the Company and declared effective by the
Securities and Exchange Commission and compliance with applicable state
securities law has been established.

                                      -4-
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         4. New Purchase Options to be Issued.

                  4.1 Partial Exercise or Transfer. Subject to the restrictions
in Section 3 hereof, this Purchase Option may be exercised or assigned in whole
or in part. In the event of the exercise or assignment hereof in part only, upon
surrender of this Purchase Option for cancellation, together with the duly
executed exercise or assignment form and, except in the case of an exercise of
this Purchase Option contemplated by Section 2.3 hereof, funds sufficient to pay
any Exercise Price and/or transfer tax, the Company shall cause to be delivered
to the Holder without charge a new Purchase Option of like tenor to this
Purchase Option in the name of the Holder evidencing the right of the Holder to
purchase the number of Units purchasable hereunder as to which this Purchase
Option has not been exercised or assigned.

                  4.2 Lost Certificate. Upon receipt by the Company of evidence
satisfactory to it of the loss, theft, destruction or mutilation of this
Purchase Option and of reasonably satisfactory indemnification or the posting of
a bond, the Company shall execute and deliver a new Purchase Option of like
tenor and date. Any such new Purchase Option executed and delivered as a result
of such loss, theft, mutilation or destruction shall constitute a substitute
contractual obligation on the part of the Company.

        5. Registration Rights.

                  5.1 Demand Registration.

                           5.1.1 Grant of Right. The Company, upon written
demand (an "Initial Demand Notice") of the holder(s) of at least an aggregate of
51% of all outstanding Purchase Options issued by the Company and/or the
underlying Units and/or the underlying securities (the "Majority Holders"),
agrees to use its best efforts to register on one occasion, all or any portion
of the Purchase Options requested by the Majority Holders in the Initial Demand
Notice and all of the securities underlying such Purchase Options, including the
Units, Common Stock, the Warrants and the Common Stock underlying the Warrants
(collectively, the "Registrable Securities"). On such occasion, the Company will
use its best efforts to file a registration statement or a post-effective
amendment to the Registration Statement covering the Registrable Securities
within sixty days after receipt of the Initial Demand Notice and use its best
efforts to have such registration statement or post-effective amendment declared
effective as soon as possible thereafter. The demand for registration may be
made at any time during a period of five years beginning on the Effective Date.
The Initial Demand Notice shall specify the number of shares of Registrable
Securities proposed to be sold and the intended method(s) of distribution
thereof. The Company will notify all holders of the Purchase Options and/or
Registrable Securities of the demand within ten days from the date of the
receipt of any such Initial Demand Notice. Each holder of Registrable Securities
who wishes to include all or a portion of such holder's Registrable Securities
in the Demand Registration (each such holder including shares of Registrable
Securities in such registration, a " Demanding Holder ") shall so notify the
Company within fifteen (15) days after the receipt by the holder of the notice
from the Company. Upon any such request, the Demanding Holders shall be entitled
to have their Registrable Securities included in the Demand Registration.

                                      -5-
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                           5.1.2 Terms. The Company  shall bear all fees and
expenses attendant to registering the Registrable Securities, including the
expenses of any legal counsel selected by the Holders to represent them in
connection with the sale of the Registrable Securities, but the Holders shall
pay any and all underwriting commissions. The Company agrees to use its
reasonable best efforts to qualify or register the Registrable Securities in
such States as are reasonably requested by the Majority Holder(s); provided,
however, that in no event shall the Company be required to register the
Registrable Securities in a State in which such registration would cause (i) the
Company to be obligated to qualify to do business in such State, or would
subject the Company to taxation as a foreign corporation doing business in such
jurisdiction or (ii) the principal stockholders of the Company to be obligated
to escrow their shares of capital stock of the Company. The Company shall use
its best efforts to cause any registration statement or post-effective amendment
filed pursuant to the demand rights granted under Section 5.1.1 to remain
effective for a period of two (2) years from the effective date of such
registration statement or post-effective amendment.

                  5.2 "Piggy-Back" Registration.

                           5.2.1 Grant of Right. In addition to the demand right
of registration, the Holders of the Purchase Options shall have the right for a
period of seven years commencing on the Effective Date, to include the
Registrable Securities as part of any other registration of securities filed by
the Company (other than in connection with a transaction contemplated by Rule
145(a) promulgated under the Act or pursuant to Form S-8); provided, however,
that if, in the written opinion of the Company's managing underwriter or
underwriters, if any, for such offering, the inclusion of the Registrable
Securities, when added to the securities being registered by the Company or the
selling stockholder(s), will exceed the maximum amount of the Company's
securities (the "Maximum Number of Shares") which can be marketed (i) at a price
reasonably related to their then current market value, and (ii) without
materially and adversely affecting the entire offering, then the Company shall
include in any such registration:

                           (i) If the registration is undertaken for the
Company's account: (A) first, the shares of Common Stock or other securities
that the Company desires to sell that can be sold without exceeding the Maximum
Number of Shares; (B) second, to the extent that the Maximum Number of Shares
has not been reached under the foregoing clause (A), the shares of Common Stock,
if any, including the Registrable Securities, as to which registration has been
requested pursuant to written contractual piggy-back registration rights of
security holders (pro rata in accordance with the number of shares of Common
Stock which each such person has actually requested to be included in such
registration, regardless of the number of shares of Common Stock with respect to
which such persons have the right to request such inclusion) that can be sold
without exceeding the Maximum Number of Shares; and

                           (ii) If the registration is a "demand" registration
undertaken at the demand of persons other than the holders of Registrable
Securities pursuant to written contractual arrangements with such persons, (A)
first, the shares of Common Stock for the account of the demanding persons that
can be sold without exceeding the Maximum Number of Shares; (B) second, to the
extent that the Maximum Number of Shares has not been reached under the
foregoing clause (A), the shares of Common Stock or other securities that the
Company desires to sell that can be sold without exceeding the Maximum Number of
Shares; and (C) third, to the extent that the Maximum Number of Shares has not
been reached under the foregoing clauses (A) and (B), the Registrable Securities
as to which registration has been requested under this Section 5.2 (pro rata in
accordance with the number of shares of Registrable Securities held by each such
holder); and (D) fourth, to the extent that the Maximum Number of Shares has not
been reached under the foregoing clauses (A), (B) and (C), the shares of Common
Stock, if any, as to which registration has been requested pursuant to written
contractual piggy-back registration rights which other shareholders desire to
sell that can be sold without exceeding the Maximum Number of Shares.

                                      -6-
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                           5.2.2 Terms. The Company shall bear all fees and
expenses attendant to registering the Registrable Securities, including the
expenses of any legal counsel selected by the Holders to represent them in
connection with the sale of the Registrable Securities but the Holders shall pay
any and all underwriting commissions related to the Registrable Securities. In
the event of such a proposed registration, the Company shall furnish the then
Holders of outstanding Registrable Securities with not less than fifteen days
written notice prior to the proposed date of filing of such registration
statement. Such notice to the Holders shall continue to be given for each
applicable registration statement filed (during the period in which the Purchase
Option is exercisable) by the Company until such time as all of the Registrable
Securities have been registered and sold. The holders of the Registrable
Securities shall exercise the "piggy-back" rights provided for herein by giving
written notice, within ten days of the receipt of the Company's notice of its
intention to file a registration statement. The Company shall use its best
efforts to cause any registration statement filed pursuant to the above
"piggyback" rights to remain effective for at least nine months from the date
that the Holders of the Registrable Securities are first given the opportunity
to sell all of such securities. The Company agrees, at its sole expenses, to use
its reasonable best efforts to qualify or register the Registrable Securities in
such States as are reasonably requested by the Majority Holder(s); provided,
however, that in no event shall the Company be required to register the
Registrable Securities in a State in which such registration would cause (i) the
Company to be obligated to qualify to do business in such State, or would
subject the Company to taxation as a foreign corporation doing business in such
jurisdiction or (ii) the principal stockholders of the Company to be obligated
to escrow their shares of capital stock of the Company.

                  5.3 General Terms.

                           5.3.1 Indemnification. The Company shall indemnify
the Holder(s) of the Registrable Securities to be sold pursuant to any
registration statement hereunder and each person, if any, who controls such
Holders within the meaning of Section 15 of the Act or Section 20(a) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act"), and any of
their respective heirs, successors, permitted assigns and transfers, and agents
and representatives, against all loss, claim, damage, expense or liability
(including all reasonable attorneys' fees and other expenses reasonably incurred
in investigating, preparing or defending against litigation, commenced or
threatened, or any claim whatsoever whether arising out of any action between
the underwriter and the Company or between the underwriter and any third party
or otherwise) to which any of them may become subject under the Act, the
Exchange Act or otherwise, arising from such registration statement but only to
the same extent and with the same effect as the provisions pursuant to which the
Company has agreed to indemnify the underwriters contained in Section 6 of the
Underwriting Agreement between the Company, H.C. Wainwright and the other
underwriters named therein dated the Effective Date. The Holder(s) of the
Registrable Securities to be sold pursuant to such registration statement, and
their successors and assigns, shall severally, and not jointly, indemnify the
Company, its officers and directors and each person, if any, who controls the
Company within the meaning of Section 15 of the Act or Section 20(a) of the
Exchange Act, against all loss, claim, damage, expense or liability (including
all reasonable attorneys' fees and other expenses reasonably incurred in
investigating, preparing or defending against any claim whatsoever) to which
they may become subject under the Act, the Exchange Act or otherwise, arising
from information furnished by or on behalf of such Holders, or their successors
or assigns, in writing, for specific inclusion in such registration statement to
the same extent and with the same effect as the provisions contained in Section
5 of the Underwriting Agreement pursuant to which the underwriters have agreed
to indemnify the Company.

                                      -7-
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                           5.3.2 Exercise of Purchase Options. Nothing contained
in this Purchase Option shall be construed as requiring the Holder(s) to
exercise their Purchase Options or Warrants underlying such Purchase Options
prior to or after the initial filing of any registration statement or the
effectiveness thereof.

                           5.3.3 Documents Delivered to Holders. The Company
shall furnish H.C. Wainwright, as representative of the Holders participating in
any of the foregoing offerings, a signed counterpart, addressed to the
participating Holders, of (i) an opinion of counsel to the Company, dated the
effective date of such registration statement (and, if such registration
includes an underwritten public offering, an opinion dated the date of the
closing under any underwriting agreement related thereto), and (ii) a "cold
comfort" letter dated the effective date of such registration statement (and, if
such registration includes an underwritten public offering, a letter dated the
date of the closing under the underwriting agreement) signed by the independent
public accountants who have issued a report on the Company's financial
statements included in such registration statement, in each case covering
substantially the same matters with respect to such registration statement (and
the prospectus included therein) and, in the case of such accountants' letter,
with respect to events subsequent to the date of such financial statements, as
are customarily covered in opinions of issuer's counsel and in accountants'
letters delivered to underwriters in underwritten public offerings of
securities. The Company shall also deliver promptly to H.C. Wainwright, as
representative of the Holders participating in the offering, the correspondence
and memoranda described below and copies of all correspondence between the
Commission and the Company, its counsel or auditors and all memoranda relating
to discussions with the Commission or its staff with respect to the registration
statement and permit H.C. Wainwright, as representative of the Holders, to do
such investigation, upon reasonable advance notice, with respect to information
contained in or omitted from the registration statement as it deems reasonably
necessary to comply with applicable securities laws or rules of the National
Association of Securities Dealers, Inc. (the "NASD"). Such investigation shall
include access to books, records and properties and opportunities to discuss the
business of the Company with its officers and independent auditors, all to such
reasonable extent and at such reasonable times and as often as H.C. Wainwright,
as representative of the Holders, shall reasonably request. The Company shall
not be required to disclose any confidential information or other records to
H.C. Wainwright, as representative of the Holders, or to any other person, until
and unless such persons shall have entered into reasonable confidentiality
agreements (in form and substance reasonably satisfactory to the Company), with
the Company with respect thereto.

                                      -8-
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                           5.3.4 Underwriting Agreement. The Company shall enter
into an underwriting agreement with the managing underwriter(s), if any,
selected by any Holders whose Registrable Securities are being registered
pursuant to this Section 5, which managing underwriter shall be reasonably
acceptable to the Company. Such agreement shall be reasonably satisfactory in
form and substance to the Company, each Holder and such managing underwriters,
and shall contain such representations, warranties and covenants by the Company
and such other terms as are customarily contained in agreements of that type
used by the managing underwriter. The Holders shall be parties to any
underwriting agreement relating to an underwritten sale of their Registrable
Securities and may, at their option, require that any or all the
representations, warranties and covenants of the Company to or for the benefit
of such underwriters shall also be made to and for the benefit of such Holders.
Such Holders shall not be required to make any representations or warranties to
or agreements with the Company or the underwriters except as they may relate to
such Holders and their intended methods of distribution. Such Holders, however,
shall agree to such covenants and indemnification and contribution obligations
for selling stockholders as are customarily contained in agreements of that type
used by the managing underwriter. Further, such Holders shall execute
appropriate custody agreements and otherwise cooperate fully in the preparation
of the registration statement and other documents relating to any offering in
which they include securities pursuant to this Section 5. Each Holder shall also
furnish to the Company such information regarding itself, the Registrable
Securities held by it, and the intended method of disposition of such securities
as shall be reasonably required to effect the registration of the Registrable
Securities.

                           5.3.5 Rule 144 Sale. Notwithstanding anything
contained in this Section 5 to the contrary, the Company shall have no
obligation pursuant to Sections 5.1 or 5.2 to use its best efforts to obtain the
registration of Registrable Securities held by any Holder (i) where such Holder
would then be entitled to sell under Rule 144 within any three month period (or
such other period prescribed under Rule 144 as may be provided by amendment
thereof) all of the Registrable Securities held by such Holder, and (ii) where
the number of Registrable Securities held by such Holder is within the volume
limitations under paragraph (e) of Rule 144 (calculated as if such Holder were
an affiliate within the meaning of Rule 144).

                           5.3.6 Supplemental Prospectus. Each Holder agrees,
that upon receipt of any notice from the Company of the happening of any event
as a result of which the prospectus included in the Registration Statement, as
then in effect, includes an untrue statement of a material fact or omits to
state a material fact required to be stated therein or necessary to make the
statements therein not misleading in light of the circumstances then existing,
such Holder will immediately discontinue disposition of Registrable Securities
pursuant to the Registration Statement covering such Registrable Securities
until such Holder's receipt of the copies of a supplemental or amended
prospectus, and, if so desired by the Company, such Holder shall deliver to the
Company (at the expense of the Company) or destroy (and deliver to the Company a
certificate of such destruction) all copies, other than permanent file copies
then in such Holder's possession, of the prospectus covering such Registrable
Securities current at the time of receipt of such notice.

                                      -9-
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         6. Adjustments.

                  6.1 Adjustments to Exercise Price and Number of Securities.
The Exercise Price and the number of Units underlying the Purchase Option shall
be subject to adjustment from time to time as hereinafter set forth:

                           6.1.1  Stock Dividends - Split-Ups. If after the
date hereof, and subject to the provisions of Section 6.4 below, the number of
outstanding shares of Common Stock is increased by a stock dividend payable in
shares of Common Stock or by a split-up of shares of Common Stock or other
similar event, then, on the effective date thereof, the number of shares of
Common Stock underlying each of the Units purchasable hereunder shall be
increased in proportion to such increase in outstanding shares. In such case,
the number of shares of Common Stock, and the exercise price applicable thereto,
underlying the Warrants underlying each of the Units purchasable hereunder shall
be adjusted in accordance with the terms of the Warrants. For example, if the
Company declares a two-for-one stock dividend and at the time of such dividend
this Purchase Option is for the purchase of one Unit at $6.60 per whole Unit
(each Warrant underlying the Units is exercisable for $5.00 per share), upon
effectiveness of the dividend, this Purchase Option will be adjusted to allow
for the purchase of one Unit at $6.60 per Unit, each Unit entitling the holder
to receive two shares of Common Stock and four Warrants (each Warrant
exercisable for $2.50 per share).

                           6.1.2 Aggregation of Shares. If after the date
hereof, and subject to the provisions of Section 6.4, the number of outstanding
shares of Common Stock is decreased by a consolidation, combination or
reclassification of shares of Common Stock or other similar event, then, on the
effective date thereof, the number of shares of Common Stock underlying each of
the Units purchasable hereunder shall be decreased in proportion to such
decrease in outstanding shares. In such case, the number of shares of Common
Stock, and the exercise price applicable thereto, underlying the Warrants
underlying each of the Units purchasable hereunder shall be adjusted in
accordance with the terms of the Warrants.

                           6.1.3 Replacement of Securities upon Reorganization,
etc. In case of any reclassification or reorganization of the outstanding shares
of Common Stock other than a change covered by Section 6.1.1 or 6.1.2 hereof or
that solely affects the par value of such shares of Common Stock, or in the case
of any merger or consolidation of the Company with or into another corporation
(other than a consolidation or merger in which the Company is the continuing
corporation and that does not result in any reclassification or reorganization
of the outstanding shares of Common Stock), or in the case of any sale or
conveyance to another corporation or entity of the property of the Company as an
entirety or substantially as an entirety in connection with which the Company is
dissolved, the Holder of this Purchase Option shall have the right thereafter
(until the expiration of the right of exercise of this Purchase Option) to
receive upon the exercise hereof, for the same aggregate Exercise Price payable
hereunder immediately prior to such event, the kind and amount of shares of
stock or other securities or property (including cash) receivable upon such
reclassification, reorganization, merger or consolidation, or upon a dissolution
following any such sale or transfer, by a Holder of the number of shares of
Common Stock of the Company obtainable upon exercise of this Purchase Option and
the underlying Warrants immediately prior to such event; and if any
reclassification also results in a change in shares of Common Stock covered by
Section 6.1.1 or 6.1.2, then such adjustment shall be made pursuant to Sections
6.1.1, 6.1.2 and this Section 6.1.3. The provisions of this Section 6.1.3 shall
similarly apply to successive reclassifications, reorganizations, mergers or
consolidations, sales or other transfers.

                                      -10-
<PAGE>

                           6.1.4 Changes in Form of Purchase Option. This form
of Purchase Option need not be changed because of any change pursuant to this
Section, and Purchase Options issued after such change may state the same
Exercise Price and the same number of Units as are stated in the Purchase
Options initially issued pursuant to this Agreement. The acceptance by any
Holder of the issuance of new Purchase Options reflecting a required or
permissive change shall not be deemed to waive any rights to an adjustment
occurring after the Commencement Date or the computation thereof.

                  6.2 Substitute Purchase Option. In case of any consolidation
of the Company with, or merger of the Company with, or merger of the Company
into, another corporation (other than a consolidation or merger which does not
result in any reclassification or change of the outstanding Common Stock), the
corporation formed by such consolidation or merger shall execute and deliver to
the Holder a supplemental Purchase Option providing that the holder of each
Purchase Option then outstanding or to be outstanding shall have the right
thereafter (until the stated expiration of such Purchase Option) to receive,
upon exercise of such Purchase Option, the kind and amount of shares of stock
and other securities and property receivable upon such consolidation or merger,
by a holder of the number of shares of Common Stock of the Company for which
such Purchase Option might have been exercised immediately prior to such
consolidation, merger, sale or transfer. Such supplemental Purchase Option shall
provide for adjustments which shall be identical to the adjustments provided in
Section 6. The above provision of this Section shall similarly apply to
successive consolidations or mergers.

                  6.3 Elimination of Fractional Interests. The Company shall not
be required to issue certificates representing fractions of shares of Common
Stock or Warrants upon the exercise of the Purchase Option, nor shall it be
required to issue scrip or pay cash in lieu of any fractional interests, it
being the intent of the parties that all fractional interests shall be
eliminated by rounding any fraction up or down to the nearest whole number of
Warrants, shares of Common Stock or other securities, properties or rights.

         7. Reservation and Listing. The Company shall at all times reserve and
keep available out of its authorized shares of Common Stock, solely for the
purpose of issuance upon exercise of the Purchase Options or the Warrants
underlying the Purchase Option, such number of shares of Common Stock or other
securities, properties or rights as shall be issuable upon the exercise thereof.
The Company covenants and agrees that, upon exercise of the Purchase Options and
payment of the Exercise Price therefor, all shares of Common Stock and other
securities issuable upon such exercise shall be duly and validly issued, fully
paid and non-assessable and not subject to preemptive rights of any stockholder.
The Company further covenants and agrees that upon exercise of the Warrants
underlying the Purchase Options and payment of the respective Warrant exercise
price therefor, all shares of Common Stock and other securities issuable upon
such exercise shall be duly and validly issued, fully paid and non-assessable
and not subject to preemptive rights of any stockholder. As long as the Purchase
Options shall be outstanding, the Company shall use its best efforts to cause
all (i) Units and shares of Common Stock issuable upon exercise of the Purchase
Options, (ii) Warrants issuable upon exercise of the Purchase Options and (iii)
shares of Common Stock issuable upon exercise of the Warrants included in the
Units issuable upon exercise of the Purchase Option to be listed (subject to
official notice of issuance) on all securities exchanges (or, if applicable on
the Nasdaq Global Market, Capital Market, OTC Bulletin Board or any successor
trading market) on which the Units, the Common Stock or the Warrants may then be
listed and/or quoted.

                                      -11-
<PAGE>

         8. Certain Notice Requirements.

                  8.1 Holder's Right to Receive Notice. Nothing herein shall be
construed as conferring upon the Holders the right to vote or consent as a
stockholder for the election of directors or any other matter, or as having any
rights whatsoever as a stockholder of the Company. If, however, at any time
prior to the expiration of the Purchase Options and their exercise, any of the
events described in Section 8.2 shall occur, then, in one or more of said
events, the Company shall give written notice of such event at least fifteen
days prior to the date fixed as a record date or the date of closing the
transfer books for the determination of the stockholders entitled to such
dividend, distribution, conversion or exchange of securities or subscription
rights, or entitled to vote on such proposed dissolution, liquidation, winding
up or sale. Such notice shall specify such record date or the date of the
closing of the transfer books, as the case may be. Notwithstanding the
foregoing, the Company shall deliver to each Holder a copy of each notice given
to the other stockholders of the Company at the same time and in the same manner
that such notice is given to the stockholders.

                  8.2 Events Requiring Notice. The Company shall be required to
give the notice described in this Section 8 upon one or more of the following
events: (i) if the Company shall take a record of the holders of its shares of
Common Stock for the purpose of entitling them to receive a dividend or
distribution, or (ii) the Company shall offer to all the holders of its Common
Stock any additional shares of capital stock of the Company or securities
convertible into or exchangeable for shares of capital stock of the Company, or
any option, right or warrant to subscribe therefor, or (iii) a dissolution,
liquidation or winding up of the Company (other than in connection with a
consolidation or merger) or a sale of all or substantially all of its property,
assets and business or a merger of the Company wherein the separate existence of
the Company shall cease shall be proposed.

                  8.3 Notice of Change in Exercise Price. The Company shall,
promptly after an event requiring a change in the Exercise Price pursuant to
Section 6 hereof, send notice to the Holders of such event and change (a "Price
Notice"). The Price Notice shall describe the event causing the change and the
method of calculating same and shall be certified as being true and accurate by
the Company's President and Chief Financial Officer.

                  8.4 Transmittal of Notices. All notices, requests, consents
and other communications under this Purchase Option shall be in writing and
shall be deemed to have been duly made when hand delivered, mailed by express
mail or private courier service, or sent by facsimile transmission, with
confirmation of receipt: (i) If to the registered Holder of the Purchase Option,
to the address and/or fax number of such Holder as shown on the books of the
Company, or (ii) if to the Company, to the following address or fax number or to
such other address or and fax number as the Company may designate by notice to
the Holders:

                                      -12-
<PAGE>

                  Harbor Business Acquisition Corp.
                  200 Highpoint Drive, Suite 215
                  Chalfont, PA 18914-3922
                  Attn:  J. Randall Williams, Chief Executive Officer
                  Fax No.: ________________

         9. Miscellaneous.

                  9.1 Amendments. The Company and H.C. Wainwright may from time
to time supplement or amend this Purchase Option without the approval of any of
the Holders in order to cure any ambiguity, to correct or supplement any
provision contained herein that may be defective or inconsistent with any other
provisions herein, or to make any other provisions in regard to matters or
questions arising hereunder that the Company and H.C. Wainwright may deem
necessary or desirable and that the Company and H.C. Wainwright deem shall not
adversely affect the interest of the Holders. All other modifications or
amendments shall require the written consent of and be signed by the party
against whom enforcement of the modification or amendment is sought.

                  9.2 Headings. The headings contained herein are for the sole
purpose of convenience of reference, and shall not in any way limit or affect
the meaning or interpretation of any of the terms or provisions of this Purchase
Option.

         10. Entire Agreement. This Purchase Option (together with the other
agreements and documents being delivered pursuant to or in connection with this
Purchase Option) constitutes the entire agreement of the parties hereto with
respect to the subject matter hereof, and supersedes all prior agreements and
understandings of the parties, oral and written, with respect to the subject
matter hereof.

                  10.1 Binding Effect. This Purchase Option shall inure solely
to the benefit of and shall be binding upon, the Holder and the Company and
their permitted assignees, respective successors, legal representative and
assigns, and no other person shall have or be construed to have any legal or
equitable right, remedy or claim under or in respect of or by virtue of this
Purchase Option or any provisions herein contained.

                  10.2 Governing Law; Submission to Jurisdiction. This Purchase
Option shall be governed by and construed and enforced in accordance with the
laws of the State of New York, without giving effect to conflict of laws. Each
of the Company and H.C. Wainwright agree that any action, proceeding or claim
against it arising out of, or relating in any way to this Purchase Option shall
be brought and enforced in the courts of the State of New York located in New
York County or of the United States of America for the Southern District of New
York, and irrevocably submits to such jurisdiction, which jurisdiction shall be
exclusive. Each of the Company and H.C. Wainwright hereby waives any objection
to such exclusive jurisdiction and that such courts represent an inconvenient
forum. Any process or summons to be served upon the Company may be served by
transmitting a copy thereof by registered or certified mail, return receipt
requested, postage prepaid, addressed to it at the address set forth in Section
8 hereof. Such mailing shall be deemed personal service and shall be legal and
binding upon the Company in any action, proceeding or claim. The Company and the
Holder agree that the prevailing party(ies) in any such action shall be entitled
to recover from the other party(ies) all of its reasonable attorneys' fees and
expenses relating to such action or proceeding and/or incurred in connection
with the preparation therefor.

                                      -13-
<PAGE>

                  10.3 Waiver, Etc. The failure of the Company or the Holder to
at any time enforce any of the provisions of this Purchase Option shall not be
deemed or construed to be a waiver of any such provision, nor to in any way
affect the validity of this Purchase Option or any provision hereof or the right
of the Company or any Holder to thereafter enforce each and every provision of
this Purchase Option. No waiver of any breach, non-compliance or non-fulfillment
of any of the provisions of this Purchase Option shall be effective unless set
forth in a written instrument executed by the party or parties against whom or
which enforcement of such waiver is sought; and no waiver of any such breach,
non-compliance or non-fulfillment shall be construed or deemed to be a waiver of
any other or subsequent breach, non-compliance or non-fulfillment.

                  10.4 Execution in Counterparts. This Purchase Option may be
executed in one or more counterparts, and by the different parties hereto in
separate counterparts, each of which shall be deemed to be an original, but all
of which taken together shall constitute one and the same agreement, and shall
become effective when one or more counterparts has been signed by each of the
parties hereto and delivered to each of the other parties hereto.

                  10.5 Exchange Agreement. As a condition of the Holder's
receipt and acceptance of this Purchase Option, Holder agrees that, at any time
prior to the complete exercise of this Purchase Option by Holder, if the Company
and H.C. Wainwright enter into an agreement (an "Exchange Agreement") pursuant
to which they agree that all outstanding Purchase Options will be exchanged for
securities or cash or a combination of both, then Holder shall agree to such
exchange and become a party to the Exchange Agreement.

                  [Remainder of Page Intentionally Left Blank]

                                      -14-
<PAGE>

                  IN WITNESS WHEREOF, the Company has caused this Purchase
Option to be signed by its duly authorized officer as of the ___ day of
__________, 2006.

                                               HARBOR BUSINESS ACQUISITION CORP.

                                               By:______________________________
                                               Name:  J. Randall Williams
                                               Title:   Chief Executive Officer

                                      -15-
<PAGE>

Form to be used to exercise Purchase Option

Harbor Business Acquisition Corp.

--------------------------------

--------------------------------

Date:_________________, 200__

                  The undersigned hereby elects irrevocably to exercise all or a
portion of the within Purchase Option and to purchase ____ Units of Harbor
Business Acquisition Corp. and hereby makes payment of $____________ (at the
rate of $_________ per Unit) in payment of the Exercise Price pursuant thereto.
Please issue the Common Stock and Warrants as to which this Purchase Option is
exercised in accordance with the instructions given below.

                                    or

                  The undersigned hereby elects irrevocably to convert its right
to purchase _________ Units purchasable under the within Purchase Option by
surrender of the unexercised portion of the attached Purchase Option (with a
"Value" based of $_______ based on a "Market Price" of $_______). Please issue
the securities comprising the Units as to which this Purchase Option is
exercised in accordance with the instructions given below.

                                                     ------------------------
                                                     Signature

                                                     ------------------------
                                                     Signature Guaranteed

                   INSTRUCTIONS FOR REGISTRATION OF SECURITIES

Name_____________________________________________________________
                  (Print in Block Letters)

Address__________________________________________________________

NOTICE: THE SIGNATURE TO THIS FORM MUST CORRESPOND WITH THE NAME AS WRITTEN UPON
THE FACE OF THE WITHIN PURCHASE OPTION IN EVERY PARTICULAR WITHOUT ALTERATION OR
ENLARGEMENT OR ANY CHANGE WHATSOEVER, AND MUST BE GUARANTEED BY A BANK, OTHER
THAN A SAVINGS BANK, OR BY A TRUST COMPANY OR BY A FIRM HAVING MEMBERSHIP ON A
REGISTERED NATIONAL SECURITIES EXCHANGE.

                                      -16-
<PAGE>

Form to be used to assign Purchase Option

                                   ASSIGNMENT

                  (To be executed by the registered Holder to effect a transfer
of the within Purchase Option):

                  FOR VALUE RECEIVED,___________________________________________
does hereby sell, assign and transfer unto______________________________________
the right to purchase __________ Units of Harbor Business Acquisition Corp. (the
"Company") evidenced by the within Purchase Option and does hereby authorize the
Company to transfer such right on the books of the Company.

Dated:___________________, 200_

                                                     ----------------------
                                                     Signature

                                                     ----------------------
                                                     Signature Guaranteed

NOTICE: THE SIGNATURE TO THIS FORM MUST CORRESPOND WITH THE NAME AS WRITTEN UPON
THE FACE OF THE WITHIN PURCHASE OPTION IN EVERY PARTICULAR WITHOUT ALTERATION OR
ENLARGEMENT OR ANY CHANGE WHATSOEVER, AND MUST BE GUARANTEED BY A BANK, OTHER
THAN A SAVINGS BANK, OR BY A TRUST COMPANY OR BY A FIRM HAVING MEMBERSHIP ON A
REGISTERED NATIONAL SECURITIES EXCHANGE.

                                      -17-<PAGE>

                                                                     Exhibit 4.6
                                WARRANT AGREEMENT

         This Warrant Agreement made as of ___________, 2006 (this "WARRANT
AGREEMENT") between HARBOR BUSINESS ACQUISITION CORP., a Delaware corporation,
with offices at 200 Highpoint Drive, Suite 215, Chalfont, Pennsylvania 18914
(the "COMPANY"), and CONTINENTAL STOCK TRANSFER & TRUST COMPANY, a New York
corporation, with offices at 17 Battery Place, New York, New York 10004 (the
"WARRANT AGENT").

         WHEREAS, the Company is engaged in a public offering (a "PUBLIC
OFFERING") of Units (the "UNITS") and, in connection therewith, has determined
to issue and deliver up to (i) 9,583,334 warrants (the "PUBLIC WARRANTS") to the
public investors, (ii) as part of an Underwriter's purchase option, 500,000
warrants to H.C. Wainwright & Co., Inc. ("H.C. WAINWRIGHT") or its designees
(the "REPRESENTATIVE'S WARRANTS"), which Representative's Warrants shall have an
exercise price of $5.00, subject to adjustment, and each of such Public Warrants
evidencing the right of the holder thereof to purchase one share of common
stock, par value $0.001 per share, of the Company's Common Stock (the "COMMON
STOCK") for $5.00, subject to adjustment as described herein; and

         WHEREAS, the Company has filed with the Securities and Exchange
Commission (the "SEC") a Registration Statement, No. 333-________ on Form S-1
(as the same may be amended from time to time, the "REGISTRATION Statement") for
the registration, under the Securities Act of 1933, as amended (the "ACT") of,
among other securities, the Warrants and the Common Stock issuable upon exercise
of the Warrants, except as described in the Registration Statement; and

         WHEREAS, the Company has received binding commitments (the "PRIVATE
PLACEMENT") from Harbor Healthcare Holding LLC and Moreco Partners LLC to
purchase an aggregate of 150,000 Units (the "INSIDER UNITS") pursuant to which
300,000 warrants (the "PRIVATE WARRANTS") will be issued, which Private Warrants
will be substantially identical to the Public Warrants; and

         WHEREAS, each of Harbor Healthcare Holdings LLC and Moreco Partners LLC
will make convertible loans to the Company in an aggregate amount of $800,000
(up to $920,000 if the over-allotment option is exercised in full) immediately
prior to the Public Offering, which convertible loans may be convertible into up
to 133,333 additional units (up to 153,333 additional units if the
over-allotment option is exercised in full), which units are convertible into up
to 133,333 (up to 153,333 if the over-allotment option is exercised in full)
shares of Common Stock and warrants to purchase 266,666 shares of Common Stock
(up to 306,666 if the over-allotment option is exercised in full), which
warrants (the "LOAN WARRANTS") will be substantially identical to the Public
Warrants;

         WHEREAS, the Company desires the Warrant Agent to act on behalf of the
Company, and the Warrant Agent is willing to so act, in connection with the
issuance, registration, transfer, exchange, redemption and exercise of the
Public Warrants, the Private Warrants, the Loan Warrants and the
Representative's Warrants (collectively, the "WARRANTS"); and

<PAGE>

         WHEREAS, the Company desires to provide for the form and provisions of
the Warrants, the terms upon which they shall be issued and exercised, and the
respective rights, limitation of rights, and immunities of the Company, the
Warrant Agent, and the holders of the Warrants; and

         WHEREAS, all acts and things have been done and performed which are
necessary to make the Warrants, when executed on behalf of the Company and
countersigned by or on behalf of the Warrant Agent, as provided herein, the
valid, binding and legal obligations of the Company, and to authorize the
execution and delivery of this Warrant Agreement.

         NOW, THEREFORE, in consideration of the mutual agreements herein
contained, the parties hereto agree as follows:

         1. Appointment of Warrant Agent. The Company hereby appoints the
Warrant Agent to act as agent for the Company for the Warrants, and the Warrant
Agent hereby accepts such appointment and agrees to perform the same in
accordance with the terms and conditions set forth in this Warrant Agreement.

         2. Warrants.

                  2.1. Form of Warrant. Each Warrant shall be issued in
registered form only, shall be in substantially the form of Exhibit A hereto,
the provisions of which are incorporated herein and shall be signed by, or bear
the facsimile signature of, the Chief Executive Officer or President and
Treasurer, Secretary or Assistant Secretary of the Company and shall bear a
facsimile of the Company's seal. In the event the person whose facsimile
signature has been placed upon any Warrant shall have ceased to serve in the
capacity in which such person signed the Warrant before such Warrant is issued,
it may be issued with the same effect as if he or she had not ceased to be such
at the date of issuance.

                  2.2. Effect of Countersignature. Unless and until
countersigned by the Warrant Agent pursuant to this Warrant Agreement, a Warrant
shall be invalid and of no effect and may not be exercised by the holder
thereof.

                  2.3. Registration.

                         2.3.1. Warrant Register. The Warrant Agent shall
maintain books (the "WARRANT Register"), for the registration of original
issuance and the registration of transfer of the Warrants. Upon the initial
issuance of the Warrants, the Warrant Agent shall issue and register the
Warrants in the names of the respective holders thereof in such denominations
and otherwise in accordance with instructions delivered to the Warrant Agent by
the Company.

                         2.3.2. Registered Holder. Prior to due presentment for
registration of transfer of any Warrant, the Company and the Warrant Agent may
deem and treat the person in whose name such Warrant shall be registered upon
the Warrant Register (the "REGISTERED HOLDER"), as the absolute owner of such
Warrant and of each Warrant represented thereby (notwithstanding any notation of
ownership or other writing on the Warrant Certificate made by anyone other than
the Company or the Warrant Agent), for the purpose of any exercise thereof, and
for all other purposes, and neither the Company nor the Warrant Agent shall be
affected by any notice to the contrary.

                                      -2-
<PAGE>

                  2.4. Detachability of Warrants. The securities comprising the
Units will not be separately transferable until 90 days after the date hereof
(and the Units will thereafter cease trading unless H.C. Wainwright determines
to allow continued trading of the Units following such separation) unless H.C.
Wainwright informs the Company of its decision to allow earlier separate
trading, but in no event will H.C. Wainwright allow separate trading of the
securities comprising the Units until (i) the Company files a Current Report on
Form 8-K which includes an audited balance sheet reflecting the receipt by the
Company of the gross proceeds of the Public Offering, including any proceeds
received by the Company from the exercise of the Underwriters' over-allotment
option, if the over-allotment option is exercised prior to the filing of the
Form 8-K, (ii) the Company files a Current Report on Form 8-K and issues a press
release announcing when such separate trading will commence, and (iii) the
business day following the earlier to occur of the expiration of the
underwriters' over-allotment option or its exercise in full.

                 2.5 Warrants and Representative's Warrants. The Private
Warrants, the Loan Warrants and the Representative's Warrants shall have the
same terms and be in the same form as the Public Warrants.

         3. Terms and Exercise of Warrants.

                  3.1. Warrant Price. Each Warrant shall, when countersigned by
the Warrant Agent, entitle the Registered Holder thereof, subject to the
provisions of such Warrant and of this Warrant Agreement, to purchase from the
Company the number of shares of Common Stock stated therein, at the price of
$5.00 per whole share, subject to the adjustments provided in Section 4 hereof
and in the last sentence of this Section 3.1. The term "Warrant Price" as used
in this Warrant Agreement refers to the price per share at which Common Stock
may be purchased at the time a Warrant is exercised. The Company in its sole
discretion may lower the Warrant Price at any time prior to the Expiration Date.

                  3.2. Duration of Warrants. A Warrant may be exercised only
during the period (the "EXERCISE PERIOD") commencing on the later of (i) the
consummation by the Company of a merger, capital stock exchange, asset
acquisition or other similar business combination (as described more fully in
the Registration Statement, a "BUSINESS COMBINATION") or (ii) ____________,
2007, and terminating at 5:00 p.m., New York City time on the earlier to occur
of (i) _____________, 2010 or (ii) the date fixed for redemption of the Warrants
as provided in Section 6 of this Warrant Agreement (the date on which the
exercise period terminates, the "EXPIRATION DATE"). Except with respect to the
right to receive the Redemption Price (as set forth in Section 6 hereunder),
each Warrant not exercised on or before the Expiration Date shall become void,
and all rights thereunder and all rights in respect thereof under this Warrant
Agreement shall cease at the close of business on the Expiration Date. The
Company in its sole discretion may extend the duration of the Warrants by
delaying the Expiration Date.

                                      -3-
<PAGE>

                  3.3. Exercise of Warrants.

                           3.3.1 Payment. Subject to the provisions of the
Warrant and this Warrant Agreement, a Warrant, when countersigned by the Warrant
Agent, may be exercised by the registered holder thereof by surrendering it, at
the office of the Warrant Agent, or at the office of its successor as Warrant
Agent, in the Borough of Manhattan, City and State of New York, with the
subscription form, as set forth in the Warrant, duly executed, and by paying in
full the Warrant Price for each full share of Common Stock as to which the
Warrant is exercised and any and all applicable taxes due in connection with the
exercise of the Warrant, as follows:

                           (a) in cash, good certified check or good bank draft
payable to the order of the Company (or as otherwise agreed to by the Company);
or

                           (b) in the event of redemption pursuant to Section 6
hereof in which the Company's management has elected to force all holders of
Warrants to exercise such Warrants on a "cashless basis," by surrendering the
Warrants for that number of shares of Common Stock equal to the quotient
obtained by dividing (x) the product of the number of shares of Common Stock
underlying the Warrants, multiplied by the difference between the Warrant Price
and the "Fair Market Value" (defined below) by (y) the Fair Market Value. Solely
for purposes of this Section 3.3.1, the "Fair Market Value" shall mean the
average reported last sale price of the Common Stock for the 10 trading days
ending on the third trading day prior to the date on which the notice of
redemption is sent to holders of Warrant pursuant to Section 6 hereof; or

                           (c) with respect to any Insider Warrants, in the
event of redemption pursuant to Section 6 hereof other than as set forth in the
above Section 3.3.1(b) and so long as such Insider Warrants are held by the
Insider or its affiliates, by surrendering such Insider Warrants for that number
of shares of Common Stock equal to the quotient obtained by dividing (x) the
product of the number of shares of Common Stock underlying the Warrants,
multiplied by the difference between the exercise price of the Warrants and the
"Fair Market Value" by (y) the Fair Market Value.

                           3.3.2. Issuance of Certificates. As soon as
practicable after the exercise of any Warrant and the clearance of the funds in
payment of the Warrant Price, the Company shall issue to the registered holder
of such Warrant a certificate or certificates for the number of full shares of
Common Stock to which he is entitled, registered in such name or names as may be
directed by him, her or it, and if such Warrant shall not have been exercised in
full, a new countersigned Warrant for the number of shares as to which such
Warrant shall not have been exercised. Notwithstanding the foregoing, the
Company shall not be obligated to deliver any securities pursuant to the
exercise of a Warrant unless a registration statement under the Act with respect
to the Common Stock is effective. Warrants may not be exercised by, or
securities issued to, any registered holder in any state in which such exercise
would be unlawful. In the event a registration statement under the Act with
respect to the Common Stock underlying the Warrants is not effective, or because
such exercise would be unlawful with respect to a registered holder in any
state, the registered holder shall not be entitled to exercise such Warrants and
such Warrants may have no value and expire worthless. In no event will the
Company be obligated to pay such registered holder any cash or other
consideration or otherwise "net cash settle" the Warrant. Furthermore, in the
event that a registration statement is not effective under the Act with respect
to the Common Stock underlying the Warrants, the purchaser of a Unit containing
such Warrant will have paid the full purchase price for the Unit solely for the
shares included in such Unit.

                                      -4-
<PAGE>

                           3.3.3. Valid Issuance. All shares of Common Stock
issued upon the proper exercise of a Warrant in conformity with this Warrant
Agreement shall be validly issued, fully paid and nonassessable.

                           3.3.4. Date of Issuance. Each person in whose name
any such certificate for shares of Common Stock is issued shall for all purposes
be deemed to have become the holder of record of such shares on the date on
which the Warrant was surrendered and payment of the Warrant Price was made,
irrespective of the date of delivery of such certificate, except that, if the
date of such surrender and payment is a date when the stock transfer books of
the Company are closed, such person shall be deemed to have become the holder of
such shares at the close of business on the next succeeding date on which the
stock transfer books are open.

                           3.3.4. Warrant Solicitation and Warrant Solicitation
Fee.

                           (a) The Company has engaged H.C. Wainwright, on a
non-exclusive basis, as its agent for the solicitation of the exercise of the
Warrants. The Company, at its cost, will (i) assist H.C. Wainwright with respect
to such solicitation, if requested by H.C. Wainwright, and (ii) provide H.C.
Wainwright, and direct the Company's transfer agent and the Warrant Agent to
deliver to H.C. Wainwright, lists of the record and, to the extent known,
beneficial owners of the Company's Warrants. The Company hereby instructs the
Warrant Agent to cooperate with H.C. Wainwright in every respect in connection
with H.C. Wainwright's solicitation activities, including, but not limited to,
providing to H.C. Wainwright, at the Company's cost, a list of record and
beneficial holders of the Warrants and circulating a prospectus or offering
circular disclosing the compensation arrangements referenced in Section 3.3.4(b)
below to holders of the Warrants at the time of exercise of the Warrants. In
addition to the conditions set forth in Section 3.3.4(b), H.C. Wainwright shall
accept payment of the warrant solicitation fee provided in Section 3.3.4(b) only
if it has provided bona fide services to the Company in connection with the
exercise of the Warrants and only to the extent that an investor who exercises
his Warrants specifically designates, in writing, that H.C. Wainwright solicited
his, her or its exercise. In addition to soliciting, either orally or in
writing, the exercise of Warrants by a Warrant holder, such services may also
include disseminating information, either orally or in writing, to Warrant
holders about the Company or the market for the Company's securities, or
assisting in the processing of the exercise of Warrants.

                           (b) In each instance in which a Warrant is exercised,
the Warrant Agent shall promptly give written notice of such exercise to the
Company and H.C. Wainwright (the "WARRANT AGENT'S EXERCISE NOTICE"). If, upon
the exercise of any Warrant more than one year from the effective date of the
Registration Statement, (i) the market price of the Company's Common Stock is
greater than the Warrant Price, (ii) disclosure of compensation arrangements
between the Company and H.C. Wainwright with respect to the solicitation of the
exercise of the Warrants was made both at the time of the Public Offering and at
the time of exercise (by delivery of the Prospectus or as otherwise required by
applicable law, rule or regulation), (iii) the holder of the Warrant confirms in
writing that the exercise of the Warrant was solicited by H.C. Wainwright, (iv)
the Warrant was not held in a discretionary account, and (v) the solicitation of
the exercise of the Warrant was not in violation of Regulation M (as such rule
or any successor rule may be in effect as of such time of exercise) promulgated
under the Securities Exchange Act of 1934, as amended, then the Warrant Agent,
simultaneously with the distribution of the Common Stock underlying the Warrants
so exercised in accordance with the instructions from the Company following
receipt of the proceeds to the Company received upon exercise of such
Warrant(s), shall, on behalf of the Company, pay to H.C. Wainwright a fee of 5%
of the Warrant Price, provided that H.C. Wainwright delivers to the Warrant
Agent within ten (10) business days from the date on which H.C. Wainwright has
received the Warrant Agent's Exercise Notice, a certificate that the conditions
set forth in the preceding clauses (iii), (iv) and (v) have been satisfied.
Notwithstanding the foregoing, no fee will be paid to H.C. Wainwright with
respect to the exercise by the Underwriters or their affiliates or the Company's
officers or directors of Warrants purchased by it or them and still held by them
for its or their own account. H.C. Wainwright and the Company may at any time
during business hours, examine the records of the Warrant Agent, including its
ledger of original Warrant certificates returned to the Warrant Agent upon
exercise of Warrants.

                                      -5-
<PAGE>

                           (c) The provisions of this Section 3.3.4. may not be
modified, amended or deleted without the prior written consent of H.C.
Wainwright.

         4. Adjustments.

                  4.1. Stock Dividends - Split-Ups. If after the date hereof,
and subject to the provisions of Section 4.6 below, the number of outstanding
shares of Common Stock is increased by a stock dividend payable in shares of
Common Stock, or by a split-up of shares of Common Stock, or other similar
event, then, on the effective date of such stock dividend, split-up or similar
event, the number of shares of Common Stock issuable on exercise of each Warrant
shall be increased in proportion to such increase in outstanding shares of
Common Stock.

                  4.2. Aggregation of Shares. If after the date hereof, and
subject to the provisions of Section 4.6, the number of outstanding shares of
Common Stock is decreased by a consolidation, combination, reverse stock split
or reclassification of shares of Common Stock or other similar event, then, on
the effective date of such consolidation, combination, reverse stock split,
reclassification or similar event, the number of shares of Common Stock issuable
on exercise of each Warrant shall be decreased in proportion to such decrease in
outstanding shares of Common Stock.

                  4.3 Adjustments in Warrant Price. Whenever the number of
shares of Common Stock purchasable upon the exercise of the Warrants is
adjusted, as provided in Section 4.1 and 4.2 above, the Warrant Price shall be
adjusted (to the nearest cent) by multiplying such Warrant Price immediately
prior to such adjustment by a fraction (x) the numerator of which shall be the
number of shares of Common Stock purchasable upon the exercise of the Warrants
immediately prior to such adjustment, and (y) the denominator of which shall be
the number of shares of Common Stock so purchasable immediately thereafter.

                                      -6-
<PAGE>

                  4.4. Replacement of Securities upon Reorganization, etc. In
case of any reclassification or reorganization of the outstanding shares of
Common Stock (other than a change covered by Section 4.1 or 4.2 hereof or that
solely affects the par value of such shares of Common Stock), or in the case of
any merger or consolidation of the Company with or into another corporation
(other than a consolidation or merger in which the Company is the continuing
corporation and that does not result in any reclassification or reorganization
of the outstanding shares of Common Stock), or in the case of any sale or
conveyance to another corporation or entity of the assets or other property of
the Company as an entirety or substantially as an entirety in connection with
which the Company is dissolved, the Warrant holders shall thereafter have the
right to purchase and receive, upon the basis and upon the terms and conditions
specified in the Warrants and in lieu of the shares of Common Stock of the
Company immediately theretofore purchasable and receivable upon the exercise of
the rights represented thereby, the kind and amount of shares of stock or other
securities or property (including cash) receivable upon such reclassification,
reorganization, merger or consolidation, or upon a dissolution following any
such sale or transfer, that the Warrant holder would have received if such
Warrant holder had exercised his, her or its Warrant(s) immediately prior to
such event; and if any reclassification also results in a change in shares of
Common Stock covered by Section 4.1 or 4.2, then such adjustment shall be made
pursuant to Sections 4.1, 4.2, 4.3 and this Section 4.4. The provisions of this
Section 4.4 shall similarly apply to successive reclassifications,
reorganizations, mergers or consolidations, sales or other transfers.

                  4.5. Notices of Changes in Warrant. Upon every adjustment of
the Warrant Price or the number of shares issuable upon exercise of a Warrant,
the Company shall give written notice thereof to the Warrant Agent, which notice
shall state the Warrant Price resulting from such adjustment and the increase or
decrease, if any, in the number of shares purchasable at such price upon the
exercise of a Warrant, setting forth in reasonable detail the method of
calculation and the facts upon which such calculation is based. Upon the
occurrence of any event specified in Sections 4.1, 4.2, 4.3 or 4.4, then, in any
such event, the Company shall give written notice to the Warrant holder, at the
last address set forth for such holder in the Warrant Register, of the record
date or the effective date of the event. Failure to give such notice, or any
defect therein, shall not affect the legality or validity of such event.

                  4.6. No Fractional Shares. Notwithstanding any provision
contained in this Warrant Agreement to the contrary, the Company shall not issue
fractional shares upon exercise of Warrants. If, by reason of any adjustment
made pursuant to this Section 4, the holder of any Warrant would be entitled,
upon the exercise of such Warrant, to receive a fractional interest in a share,
the Company shall, upon such exercise, round up to the nearest whole number the
number of the shares of Common Stock to be issued to the Warrant holder.

                  4.7. Form of Warrant. The form of Warrant need not be changed
because of any adjustment pursuant to this Section 4, and Warrants issued after
such adjustment may state the same Warrant Price and the same number of shares
as is stated in the Warrants initially issued pursuant to this Warrant
Agreement. However, the Company may at any time in its sole discretion make any
change in the form of Warrant that the Company may deem appropriate and that
does not affect the substance thereof, and any Warrant thereafter issued or
countersigned, whether in exchange or substitution for an outstanding Warrant or
otherwise, may be in the form as so changed.

                                      -7-
<PAGE>

         5. Transfer and Exchange of Warrants.

                  5.1 Transfer of Warrants. Prior to the Detachment Date,
Warrants may be transferred or exchanged only together with the Unit in which
such Warrant is included, and only for the purpose of effecting, or in
conjunction with, a transfer or exchange of such Unit. Furthermore, prior to the
Detachment Date, each transfer of a Unit on the register relating to such Units
shall operate also to transfer the Warrants included in such Unit. From and
after the Detachment Date, this Section 5.1 shall be of no further force and
effect.

                  5.2. Registration of Transfer. The Warrant Agent shall
register the transfer, from time to time, of any outstanding Warrant upon the
Warrant Register, upon surrender of such Warrant for transfer, properly endorsed
with signatures properly guaranteed and accompanied by appropriate instructions
for transfer. Upon any such transfer, a new Warrant representing an equal
aggregate number of Warrants shall be issued and the old Warrant shall be
cancelled by the Warrant Agent. The Warrants so cancelled shall be delivered by
the Warrant Agent to the Company from time to time upon request.

                  5.3. Procedure for Surrender of Warrants. Warrants may be
surrendered to the Warrant Agent, together with a written request for exchange
or transfer, and thereupon the Warrant Agent shall issue in exchange therefor
one or more new Warrants as requested by the Registered Holder of the Warrants
so surrendered, representing an equal aggregate number of Warrants; provided,
however, that in the event that a Warrant surrendered for transfer bears a
restrictive legend, the Warrant Agent shall not cancel such Warrant and issue
new Warrants in exchange therefor until the Warrant Agent has received an
opinion of counsel for the Company stating that such transfer may be made and
indicating whether the new Warrants must also bear a restrictive legend.

                  5.4. Fractional Warrants. The Warrant Agent shall not be
required to effect any registration of transfer or exchange which will result in
the issuance of a warrant certificate for a fraction of a warrant.

                  5.5. Service Charges. No service charge shall be made for any
exchange or registration of transfer of Warrants.

                  5.6. Warrant Execution and Countersignature. The Warrant Agent
is hereby authorized to countersign and to deliver, in accordance with the terms
of this Warrant Agreement, the Warrants required to be issued pursuant to the
provisions of this Section 5, and the Company, whenever required by the Warrant
Agent, will supply the Warrant Agent with Warrants duly executed on behalf of
the Company for such purpose.

                                      -8-
<PAGE>

         6. Redemption.

                  6.1. Redemption. Subject to Section 6.4 hereof and the prior
written approval of H.C. Wainwright,, not less than all of the outstanding
Warrants may be redeemed, at the option of the Company, at any time after they
become exercisable and prior to their expiration, at the office of the Warrant
Agent, upon the notice referred to in Section 6.2, at the price of $.01 per
Warrant (the "REDEMPTION PRICE"), provided that the last closing sales price of
the Common Stock has been equal to or greater than $8.50 per share, for any
twenty (20) trading days within a thirty (30) trading day period ending on the
third business day prior to the date on which notice of redemption is given, and
(b) a registration statement under the Act relating to the shares of common
stock issuable upon exercise of the Warrants is effective and expected to remain
effective until the redemption date and a prospectus relating to the shares of
common stock issuable upon exercise of the Warrants is available for use and
expected to remain available for use until the Redemption Date. The provisions
of this Section 6.1 may not be modified, amended or deleted without the prior
written consent of H.C. Wainwright.

                  6.2. Date Fixed for, and Notice of, Redemption. In the event
the Company shall elect to redeem all of the Warrants, the Company shall fix a
date for the redemption. Notice of redemption shall be mailed by first class
mail, postage prepaid, by the Company not less than 30 days prior to the date
fixed for redemption to the Registered Holders of the Warrants to be redeemed at
their last addresses as they shall appear on the Warrant Register. Any notice
mailed in the manner herein provided shall be conclusively presumed to have been
duly given whether or not the Registered Holder received such notice.

                  6.3. Exercise After Notice of Redemption. The Warrants may be
exercised in accordance with Section 3 of this Warrant Agreement at any time
after notice of redemption shall have been given by the Company pursuant to
Section 6.2. hereof and prior to the time and date fixed for redemption. On and
after the redemption date, the record holder of the Warrants shall have no
further rights except to receive, upon surrender of the Warrants, the Redemption
Price.

                  6.4 Outstanding Warrants Only. The Company understands that
the redemption rights provided for by this Section 6 apply only to outstanding
Warrants. To the extent a person holds rights to purchase Warrants, such
purchase rights shall not be extinguished by redemption. However, once such
purchase rights are exercised, the Company may redeem the Warrants issued upon
such exercise provided that the criteria for redemption is met. The provisions
of this Section 6.4 may not be modified, amended or deleted without the prior
written consent of H.C. Wainwright.

         7. Other Provisions Relating to Rights of Holders of Warrants.

                  7.1. No Rights as Stockholder. A Warrant does not entitle the
Registered Holder thereof to any of the rights of a stockholder of the Company,
including, without limitation, the right to receive dividends, or other
distributions, exercise any preemptive rights to vote or to consent or to
receive notice as stockholders in respect of the meetings of stockholders or the
election of directors of the Company or any other matter.

                                      -9-
<PAGE>

                  7.2. Lost, Stolen, Mutilated, or Destroyed Warrants. If any
Warrant is lost, stolen, mutilated, or destroyed, the Company and the Warrant
Agent may on such terms as to indemnity or otherwise as they may in their
discretion impose (which shall, in the case of a mutilated Warrant, include the
surrender thereof), issue a new Warrant of like denomination, tenor, and date as
the Warrant so lost, stolen, mutilated, or destroyed. Any such new Warrant shall
constitute a substitute contractual obligation of the Company, whether or not
the allegedly lost, stolen, mutilated, or destroyed Warrant shall be at any time
enforceable by anyone.

                  7.3. Reservation of Common Stock. The Company shall at all
times reserve and keep available a number of its authorized but unissued shares
of Common Stock that will be sufficient to permit the exercise in full of all
outstanding Warrants issued pursuant to this Warrant Agreement.

                  7.4. Registration of Common Stock. The Company agrees that
prior to the commencement of the Exercise Period, it shall file with the
Securities and Exchange Commission a post-effective amendment to the
Registration Statement, or a new registration statement, for the registration,
under the Act, of, and it shall take such action as is necessary to qualify for
sale, in those states in which the sale of the Warrants was initially qualified,
the Common Stock issuable upon exercise of the Warrants. In either case, the
Company will use its best efforts to cause the same to become effective on or
prior to the commencement of the Exercise Period and to maintain the
effectiveness of such registration statement until the expiration of the
Warrants in accordance with the provisions of this Warrant Agreement. The
provisions of this Section 7.4 may not be modified, amended or deleted without
the prior written consent of H.C. Wainwright.

         8. Concerning the Warrant Agent and Other Matters.

                  8.1. Payment of Taxes. The Company will from time to time
promptly pay all taxes and charges that may be imposed upon the Company or the
Warrant Agent in respect of the issuance or delivery of shares of Common Stock
upon the exercise of Warrants, but the Company shall not be obligated to pay any
transfer taxes in respect of the Warrants or such shares.

                  8.2. Resignation, Consolidation, or Merger of Warrant Agent.

                           8.2.1. Appointment of Successor Warrant Agent. The
Warrant Agent, or any successor to it hereafter appointed, may resign its duties
and be discharged from all further duties and liabilities hereunder after giving
sixty (60) days' notice in writing to the Company. If the office of the Warrant
Agent becomes vacant by resignation or incapacity to act or otherwise, the
Company shall appoint in writing a successor Warrant Agent in place of the
Warrant Agent. If the Company shall fail to make such appointment within a
period of 30 days after it has been notified in writing of such resignation or
incapacity by the Warrant Agent or by the holder of the Warrant (who shall, with
such notice, submit his Warrant for inspection by the Company), then the holder
of any Warrant may apply to the Supreme Court of the State of New York for the
County of New York for the appointment of a successor Warrant Agent at the
Company's cost. Any successor Warrant Agent, whether appointed by the Company or
by such court, shall be a corporation organized and existing under the laws of
the State of New York, in good standing and having its principal office in the
Borough of Manhattan, City and State of New York, and authorized under such laws
to exercise corporate trust powers and subject to supervision or examination by
federal or state authority. After appointment, any successor Warrant Agent shall
be vested with all the authority, powers, rights, immunities, duties, and
obligations of its predecessor Warrant Agent with like effect as if originally
named as Warrant Agent hereunder, without any further act or deed; but if for
any reason it becomes necessary or appropriate, the predecessor Warrant Agent
shall execute and deliver, at the expense of the Company, an instrument
transferring to such successor Warrant Agent all the authority, powers, and
rights of such predecessor Warrant Agent hereunder; and upon request of any
successor Warrant Agent the Company shall make, execute, acknowledge, and
deliver any and all instruments in writing for more fully and effectually
vesting in and confirming to such successor Warrant Agent all such authority,
powers, rights, immunities, duties, and obligations.

                                      -10-
<PAGE>

                           8.2.2. Notice of Successor Warrant Agent. In the
event a successor Warrant Agent shall be appointed, the Company shall give
notice thereof to the predecessor Warrant Agent and the transfer agent for the
Common Stock not later than the effective date of any such appointment.

                           8.2.3. Merger or Consolidation of Warrant Agent. Any
corporation into which the Warrant Agent may be merged or with which it may be
consolidated or any corporation resulting from any merger or consolidation to
which the Warrant Agent shall be a party shall be the successor Warrant Agent
under this Warrant Agreement without any further act.

                  8.3. Fees and Expenses of Warrant Agent.

                           8.3.1. Remuneration. The Company agrees to pay the
Warrant Agent reasonable remuneration for its services as Warrant Agent
hereunder and will reimburse the Warrant Agent upon demand for all expenditures
that the Warrant Agent may reasonably incur in the execution of its duties
hereunder.

                           8.3.2. Further Assurances. The Company agrees to
perform, execute, acknowledge, and deliver or cause to be performed, executed,
acknowledged, and delivered all such further and other acts, instruments, and
assurances as may reasonably be required by the Warrant Agent for the carrying
out or performing of the provisions of this Warrant Agreement.

                  8.4. Liability of Warrant Agent.

                           8.4.1. Reliance on Company Statement. Whenever in the
performance of its duties under this Warrant Agreement, the Warrant Agent shall
deem it necessary or desirable that any fact or matter be proved or established
by the Company prior to taking or suffering any action hereunder, such fact or
matter (unless other evidence in respect thereof be herein specifically
prescribed) may be deemed to be conclusively proved and established by a
statement signed by the President or Chairman of the Board of the Company and
delivered to the Warrant Agent. The Warrant Agent may rely upon such statement
for any action taken or suffered in good faith by it pursuant to the provisions
of this Warrant Agreement.

                                      -11-
<PAGE>

                           8.4.2. Indemnity. The Warrant Agent shall be liable
hereunder only for its own negligence, willful misconduct or bad faith. The
Company agrees to indemnify the Warrant Agent and save it harmless against any
and all liabilities, including judgments, costs and reasonable counsel fees, for
anything done or omitted by the Warrant Agent in the execution of this Warrant
Agreement except as a result of the Warrant Agent's negligence, willful
misconduct, or bad faith.

                           8.4.3. Exclusions. The Warrant Agent shall have no
responsibility with respect to the validity of this Warrant Agreement or with
respect to the validity or execution of any Warrant (except its countersignature
thereof); nor shall it be responsible for any breach by the Company of any
covenant or condition contained in this Warrant Agreement or in any Warrant; nor
shall it be responsible to make any adjustments required under the provisions of
Section 4 hereof or responsible for the manner, method, or amount of any such
adjustment or the ascertaining of the existence of facts that would require any
such adjustment; nor shall it by any act hereunder be deemed to make any
representation or warranty as to the authorization or reservation of any shares
of Common Stock to be issued pursuant to this Warrant Agreement or any Warrant
or as to whether any shares of Common Stock will when issued be valid and fully
paid and nonassessable.

                  8.5. Acceptance of Agency. The Warrant Agent hereby accepts
the agency established by this Warrant Agreement and agrees to perform the same
upon the terms and conditions herein set forth and among other things, shall
account promptly to the Company with respect to Warrants exercised and
concurrently account for, and pay to the Company, all moneys received by the
Warrant Agent for the purchase of shares of the Company's Common Stock through
the exercise of Warrants.

                  8.6 The Warrant Agent hereby waives any and all right, title,
interest or claim of any kind ("CLAIM") in or to any distribution of the Trust
Account (as defined in that certain Investment Management Trust Agreement, dated
as of the date hereof, by and between the Company and the Warrant Agent as
trustee thereunder), and hereby agrees not to seek recourse, reimbursement,
payment or satisfaction for any Claim against the Trust Account for any reason
whatsoever.

         9. Miscellaneous Provisions.

                  9.1. Successors. All the covenants and provisions of this
Warrant Agreement by or for the benefit of the Company or the Warrant Agent
shall bind and inure to the benefit of their respective successors and assigns.

                  9.2. Notices. Any notice, statement or demand authorized by
this Warrant Agreement to be given or made by the Warrant Agent or by the holder
of any Warrant to or on the Company shall be sufficiently given when so
delivered if by hand or overnight delivery or if sent by certified mail or
private courier service within five days after deposit of such notice, postage
prepaid, or sent by facsimile transmission (with confirmation of receipt),
addressed (until another address is filed in writing by the Company with the
Warrant Agent), as follows:

                                      -12-
<PAGE>

                  Harbor Business Acquisition Corp.
                  200 Highpoint Drive, Suite 215
                  Chalfont, PA 18914-3922
                  Attn:  J. Randall Williams, Chief Executive Officer

Any notice, statement or demand authorized by this Warrant Agreement to be given
or made by the holder of any Warrant or by the Company to or on the Warrant
Agent shall be sufficiently given when so delivered if by hand or overnight
delivery or if sent by certified mail or private courier service within five
days after deposit of such notice, postage prepaid, or sent by facsimile
transmission (with confirmation of receipt) addressed (until another address is
filed in writing by the Warrant Agent with the Company), as follows:

                  Continental Stock Transfer & Trust Company
                  17 Battery Place
                  New York, New York 10004
                  Attn: _________________

with a copy in each case to:

                  Blank Rome LLP
                  The Chrysler Building
                  405 Lexington Avenue
                  New York, New York 10174
                  Attn: Ethan M. Seer, Esq.

and

                  Lowenstein Sandler PC
                  65 Livingston Avenue
                  Roseland, New Jersey 07068
                  Attn: Steven Skolnick, Esq.

and

                  H.C. Wainwright & Co., Inc.
                  52 Vanderbilt Avenue - 12th Floor
                  New York, NY  10017
                  Attn: ________________

                                      -13-
<PAGE>
                  9.3. Applicable Law. The validity, interpretation, and
performance of this Warrant Agreement and of the Warrants shall be governed in
all respects by the laws of the State of New York, without giving effect to
conflict of laws principles that would result in the application of the
substantive laws of another jurisdiction. The Company hereby agrees that any
action, proceeding or claim against it arising out of or relating in any way to
this Warrant Agreement shall be brought and enforced in the courts of the State
of New York located in New York County or the United States District Court for
the Southern District of New York, and irrevocably submits to such jurisdiction,
which jurisdiction shall be exclusive. The Company hereby waives any objection
to such exclusive jurisdiction and that such courts represent an inconvenient
forum. Any such process or summons to be served upon the Company may be served
by transmitting a copy thereof by registered or certified mail, return receipt
requested, postage prepaid, addressed to it at the address set forth in Section
9.2 hereof. Such mailing shall be deemed personal service and shall be legal and
binding upon the Company in any action, proceeding or claim

                  9.4. Persons Having Rights under this Warrant Agreement.
Nothing in this Warrant Agreement expressed and nothing that may be implied from
any of the provisions hereof is intended, or shall be construed, to confer upon,
or give to, any person or entity other than the parties hereto and the
Registered Holders of the Warrants (who shall, for all purposes hereunder, be
deemed third party beneficiaries of this Warrant Agreement) and, for the
purposes of Sections 3.3.4, 6.1, 6.4, 7.4, 9.2 and 9.8 hereof, H.C. Wainwright,
any right, remedy, or claim under or by reason of this Warrant Agreement or of
any covenant, condition, stipulation, promise, or agreement hereof. H.C.
Wainwright shall be deemed to be a third-party beneficiary of this Warrant
Agreement with respect to Sections 3.3.4, 6.1, 6.4, 7.4, 9.2 and 9.8 hereof. All
covenants, conditions, stipulations, promises, and agreements contained in this
Warrant Agreement shall be for the sole and exclusive benefit of the parties
hereto (and H.C. Wainwright with respect to the Sections 3.3.4, 6.1, 6.4, 7.4
and 9.2 hereof) and their successors and assigns and of the Registered Holders
of the Warrants.

                  9.5. Examination of the Warrant Agreement. A copy of this
Warrant Agreement shall be available at all reasonable times at the office of
the Warrant Agent in the Borough of Manhattan, City and State of New York, for
inspection by the Registered Holder of any Warrant. The Warrant Agent may
require any such holder to submit his Warrant for inspection by it.

                  9.6. Counterparts. This Warrant Agreement may be executed in
any number of counterparts and each of such counterparts shall for all purposes
be deemed to be an original, and all such counterparts shall together constitute
but one and the same instrument.

                  9.7. Effect of Headings. The Section headings herein are for
convenience only and are not part of this Warrant Agreement and shall not affect
the interpretation thereof.

                  9.8. Amendments. This Warrant Agreement may be amended by the
parties hereto without the consent of any Registered Holder for the purpose of
curing any ambiguity, or of curing, correcting or supplementing any defective
provision contained herein or adding or changing any other provisions with
respect to matters or questions arising under this Warrant Agreement as the
parties may deem necessary or desirable and that the parties deem shall not
adversely affect the interest of the Registered Holders. All other modifications
or amendments (except as otherwise specifically set forth herein), including any
amendment to increase the Warrant Price or shorten the Exercise Period, shall
require the written consent of each of H.C. Wainwright and the registered
holders of a majority of the then outstanding Warrants. Notwithstanding the
foregoing, the Company may lower the Warrant Price in accordance with Sections
3.1 without such consent.

                                      -14-
<PAGE>

                  9.9. Severability. This Warrant Agreement shall be deemed
severable, and the invalidity or unenforceability of any term or provision
hereof shall not affect the validity or enforceability of this Warrant Agreement
or of any other term or provision hereof. Furthermore, in lieu of any such
invalid or unenforceable term or provision, the parties hereto intend that there
shall be added as a part of this Warrant Agreement a provision as similar in
terms to such invalid or unenforceable provision as may be possible and be valid
and enforceable.

                  [Remainder of Page Intentionally Left Blank.]

                                      -15-
<PAGE>

         IN WITNESS WHEREOF, this Warrant Agreement has been duly executed by
the parties hereto as of the day and year first above written.

                                             HARBOR BUSINESS ACQUISITION CORP.

                                             By:_______________________________
                                                 Name:  J. Randall Williams
                                                 Title: Chief Executive Officer

                                             CONTINENTAL STOCK TRANSFER
                                                & TRUST COMPANY

                                             By:_______________________________
                                                 Name:
                                                 Title:

                                      -16-

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