Document:

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                                                                     EXHIBIT 4.3

NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE
EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR
THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"),
AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE
EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREUNDER AND IN COMPLIANCE WITH
APPLICABLE STATE SECURITIES OR BLUE SKY LAWS.

                              E.DIGITAL CORPORATION

                                     WARRANT

Warrant No. __                                            Dated: October 5, 2000

        e.Digital Corporation, a Delaware corporation (the "Company"), hereby
certifies that, for value received, _____________________________________ or its
registered assigns ("Holder"), is entitled, subject to the terms set forth
below, to purchase from the Company up to a total of _______ shares of common
stock, $.001 par value per share (the "Common Stock"), of the Company (each such
share, a "Warrant Share" and all such shares, the "Warrant Shares") at an
exercise price equal to $5.20 per share (as adjusted from time to time as
provided in Section 8, the "Exercise Price"), at any time and from time to time
from and after the date hereof and through and including October 5, 2005 (the
"Expiration Date"), and subject to the following terms and conditions:

                1. Registration of Warrant. The Company shall register this
Warrant, upon records to be maintained by the Company for that purpose (the
"Warrant Register"), in the name of the record Holder hereof from time to time.
The Company may deem and treat the registered Holder of this Warrant as the
absolute owner hereof for the purpose of any exercise hereof or any distribution
to the Holder, and for all other purposes, and the Company shall not be affected
by notice to the contrary.

                2. Registration of Transfers and Exchanges.

                        (a) The Company shall register the transfer of any
portion of this Warrant in the Warrant Register, upon surrender of this Warrant,
with the Form of Assignment attached hereto duly completed and signed, to the
Transfer Agent or to the Company at its address for notice set forth in Section
12. Upon any such registration or transfer, a new warrant to purchase Common
Stock, in substantially the form of this Warrant (any such new warrant, a "New
Warrant"), evidencing the portion of this Warrant so transferred shall be issued
to the transferee and a New Warrant evidencing the remaining portion of this
Warrant not so transferred, if any, shall be issued to the transferring Holder.
The acceptance of the New

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Warrant by the transferee thereof shall be deemed the acceptance of such
transferee of all of the rights and obligations of a holder of a Warrant.

                        (b) This Warrant is exchangeable, upon the surrender
hereof by the Holder to the office of the Company at its address for notice set
forth in Section 12 for one or more New Warrants, evidencing in the aggregate
the right to purchase the number of Warrant Shares which may then be purchased
hereunder. Any such New Warrant will be dated the date of such exchange.

                3. Duration and Exercise of Warrants.

                        (a) This Warrant shall be exercisable by the registered
Holder on any business day before 6:30 P.M., New York City time, at any time and
from time to time on or after the date hereof to and including the Expiration
Date. At 6:30 P.M., New York City time on the Expiration Date, the portion of
this Warrant not exercised prior thereto shall be and become void and of no
value.

                        (b) Upon delivery of a duly completed and signed Form of
Election to Purchase attached hereto (and the grid attached hereto as Annex A)
duly completed and signed, to the Company at its address for notice set forth in
Section 12 and upon payment of the Exercise Price multiplied by the number of
Warrant Shares that the Holder intends to purchase hereunder, in the manner
provided hereunder, all as specified by the Holder in the Form of Election to
Purchase, the Company shall promptly (but in no event later than 3 business days
after the Date of Exercise (as defined herein)) issue or cause to be issued and
cause to be delivered to or upon the written order of the Holder and in such
name or names as the Holder may designate, a certificate for the Warrant Shares
issuable upon such exercise, free of restrictive legends except (i) either in
the event that a registration statement covering the resale of the Warrant
Shares and naming the Holder as a selling stockholder thereunder is not then
effective or the Warrant Shares are not freely transferable without volume
restrictions pursuant to Rule 144(k) promulgated under the Securities Act of
1933, as amended (the "Securities Act"), or (ii) if this Warrant shall have been
issued pursuant to a written agreement between the original Holder and the
Company, as required by such agreement. Any person so designated by the Holder
to receive Warrant Shares shall be deemed to have become holder of record of
such Warrant Shares as of the Date of Exercise of this Warrant. The Company
shall, upon request of the Holder, if available, use its best efforts to deliver
Warrant Shares hereunder electronically through the Depository Trust Corporation
or another established clearing corporation performing similar functions.

                        A "Date of Exercise" means the date on which the Company
shall have received (i) the Form of Election to Purchase completed and duly
signed, and (ii) payment of the Exercise Price for the number of Warrant Shares
so indicated by the Holder to be purchased.

                        (c) This Warrant shall be exercisable, either in its
entirety or, from time to time, for a portion of the number of Warrant Shares.

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                        (d) Commencing at any time after the date of the
issuance of this Warrant, if (i) the average closing bid price of the Common
Stock on the OTC Bulletin Board (or such national securities exchange on which
the Common Stock is then listed or quoted for trading) for any 10 consecutive
trading days (a "Trigger Period") exceeds $10.40, and (ii) the Warrant Shares
are either registered for resale pursuant to an effective registration statement
naming the Holder as a selling stockholder thereunder or freely transferable
without volume restrictions pursuant to Rule 144(k) promulgated under the
Securities Act, then the Company shall have the right, upon 10 days' notice to
the Holder given not later than ten (10) Trading Days after the conclusion of
any such Trigger Period (the "Call Notice"), to redeem all of the then issuable
Warrant Shares at a price of $.001 per Warrant Share (the "Call Price"), on the
date set forth in the Call Notice, but in no event earlier than 10 days
following the date of the receipt by the Holder of the Call Notice (the "Call
Date"). The Holder may exercise this Warrant at any time prior to the Call Date.
Any portion of this Warrant not exercised by 6:30 p.m. (New York City time) on
the Call Date shall no longer be exercisable and shall be returned to the
Company (and, if not so returned, shall automatically be deemed canceled), and
the Company, upon its receipt of the unexercised portion of this Warrant, shall
issue therefor in full and complete satisfaction of its obligations under such
remaining portion of this Warrant to the Holder an amount equal to the number of
shares of Common Stock then issuable hereunder multiplied by the Call Price.

                4. Piggyback Registration Rights. This Warrant is subject to the
piggyback registration rights granted under the Registration Rights Agreement
and such piggyback registration rights shall continue until all of the Holder's
Warrant Shares have been sold in accordance with an effective registration
statement or upon the Expiration Date. The Company will pay all registration
expenses in connection therewith.

                5. Payment of Taxes. The Company will pay all documentary stamp
taxes attributable to the issuance of Warrant Shares upon the exercise of this
Warrant; provided, however, that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the registration
of any certificates for Warrant Shares or Warrants in a name other than that of
the Holder. The Holder shall be responsible for all other tax liability that may
arise as a result of holding or transferring this Warrant or receiving Warrant
Shares upon exercise hereof.

                6. Replacement of Warrant. If this Warrant is mutilated, lost,
stolen or destroyed, the Company shall issue or cause to be issued in exchange
and substitution for and upon cancellation hereof, or in lieu of and
substitution for this Warrant, a New Warrant, but only upon receipt of evidence
reasonably satisfactory to the Company of such loss, theft or destruction and
indemnity, if requested, satisfactory to it. Applicants for a New Warrant under
such circumstances shall also comply with such other reasonable regulations and
procedures and pay such other reasonable charges as the Company may prescribe.

                7. Reservation of Warrant Shares. The Company covenants that it
will at all times reserve and keep available out of the aggregate of its
authorized but unissued Common Stock, solely for the purpose of enabling it to
issue Warrant Shares upon exercise of this Warrant

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as herein provided, the number of Warrant Shares which are then issuable and
deliverable upon the exercise of this entire Warrant, free from preemptive
rights or any other actual contingent purchase rights of persons other than the
Holder (taking into account the adjustments and restrictions of Section 8). The
Company covenants that all Warrant Shares that shall be so issuable and
deliverable shall, upon issuance and the payment of the applicable Exercise
Price in accordance with the terms hereof, be duly and validly authorized,
issued and fully paid and nonassessable.

                8. Certain Adjustments. The Exercise Price and number of Warrant
Shares issuable upon exercise of this Warrant are subject to adjustment from
time to time as set forth in this Section 8.

                        (a) If the Company, at any time while this Warrant is
outstanding, (i) shall pay a stock dividend (except scheduled dividends paid on
outstanding preferred stock as of the date hereof which contain a stated
dividend rate) or otherwise make a distribution or distributions on shares of
its Common Stock or on any other class of capital stock payable in shares of
Common Stock, (ii) subdivide outstanding shares of Common Stock into a larger
number of shares, or (iii) combine outstanding shares of Common Stock into a
smaller number of shares, the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock (excluding
treasury shares, if any) outstanding before such event and of which the
denominator shall be the number of shares of Common Stock (excluding treasury
shares, if any) outstanding after such event. Any adjustment made pursuant to
this Section shall become effective immediately after the record date for the
determination of stockholders entitled to receive such dividend or distribution
and shall become effective immediately after the effective date in the case of a
subdivision or combination, and shall apply to successive subdivisions and
combinations.

                        (b) In case of any reclassification of the Common Stock
or any compulsory share exchange pursuant to which the Common Stock is converted
into other securities, cash or property, then the Holder shall have the right
thereafter to exercise this Warrant only into the shares of stock and other
securities and property receivable upon or deemed to be held by holders of
Common Stock following such reclassification or share exchange, and the Holder
shall be entitled upon such event to receive such amount of securities or
property equal to the amount of Warrant Shares such Holder would have been
entitled to had such Holder exercised this Warrant immediately prior to such
reclassification or share exchange. The terms of any such reclassification or
share exchange shall include such terms so as to continue to give to the Holder
the right to receive the securities or property set forth in this Section 8(b)
upon any exercise following any such reclassification or share exchange.

                        (c) If the Company, at any time while this Warrant is
outstanding, shall distribute to all holders of Common Stock (and not to holders
of this Warrant) evidences of its indebtedness or assets or rights or warrants
to subscribe for or purchase any security (excluding those referred to in
Sections 8(a), (b) and (d)), then in each such case the Exercise Price shall be
determined by multiplying the Exercise Price in effect immediately prior to the
record date fixed for determination of stockholders entitled to receive such
distribution by a fraction of which the denominator shall be the Exercise Price
determined as of the record date

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mentioned above, and of which the numerator shall be such Exercise Price on such
record date less the then fair market value at such record date of the portion
of such assets or evidence of indebtedness so distributed applicable to one
outstanding share of Common Stock as determined by the Company's independent
certified public accountants that regularly examines the financial statements of
the Company (an "Appraiser").

                        (d) If the Company or any subsidiary thereof, as
applicable with respect to Common Stock Equivalents (as defined below), at any
time while this Warrant is outstanding, shall issue shares of Common Stock or
rights, warrants, options or other securities or debt that are convertible into
or exchangeable for shares of Common Stock ("Common Stock Equivalents"),
entitling any Person to acquire shares of Common Stock at a price per share less
than the Exercise Price (if the holder of the Common Stock or Common Stock
Equivalent so issued shall at any time, whether by operation of purchase price
adjustments, reset provisions, floating conversion, exercise or exchange prices
or otherwise, or due to warrants, options or rights issued in connection with
such issuance, be entitled to receive shares of Common Stock at a price less
than the Exercise Price, such issuance shall be deemed to have occurred for less
than the Exercise Price), then, at the sole option of the Holder, the Exercise
Price shall be adjusted to mirror the conversion, exchange or purchase price for
such Common Stock Equivalents (including any reset provisions thereof),
provided, that for purposes hereof, all shares of Common Stock that are issuable
upon conversion, exercise or exchange of Common Stock Equivalents shall be
deemed outstanding immediately after the issuance of such Common Stock
Equivalents. Such adjustment shall be made whenever such shares of Common Stock
or Common Stock Equivalents are issued.

                        (e) In case of any (1) merger or consolidation of the
Company with or into another Person, or (2) sale by the Company of more than
one-half of the assets of the Company (on a book value basis) in one or a series
of related transactions, the Holder shall have the right thereafter to (A)
exercise this Warrant for the shares of stock and other securities, cash and
property receivable upon or deemed to be held by holders of Common Stock
following such merger, consolidation or sale, and the Holder shall be entitled
upon such event or series of related events to receive such amount of
securities, cash and property as the Common Stock for which this Warrant could
have been exercised immediately prior to such merger, consolidation or sales
would have been entitled or (B) in the case of a merger or consolidation, (x)
require the surviving entity to issue common stock purchase warrants equal to
the number Warrant Shares to which this Warrant then permits, which newly
warrant shall be identical to this Warrant, and (y) simultaneously with the
issuance of such warrant, the Holder of such warrant shall have the right to
exercise such warrant only into shares of stock and other securities, cash and
property receivable upon or deemed to be held by holders of Common Stock
following such merger or consolidation or (C) require the surviving entity from
such merger, acquisition or business combination to pay to the Holder, in cash,
the Black Scholes value of this Warrant. In the case of clause (B), the exercise
price for such new warrant shall be based upon the amount of securities, cash
and property that each share of Common Stock would receive in such transaction
and the Exercise Price of this Warrant immediately prior to the effectiveness or
closing date for such transaction. The terms of any such merger, sale or
consolidation shall include such terms so as continue to give the Holder the
right to receive the securities, cash and property set forth in

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this Section upon any conversion or redemption following such event. This
provision shall similarly apply to successive such events.

                        (f) For the purposes of this Section 8, the following
clauses shall also be applicable:

                            (i) Record Date. In case the Company shall take a
record of the holders of its Common Stock for the purpose of entitling them (A)
to receive a dividend or other distribution payable in Common Stock or in
securities convertible or exchangeable into shares of Common Stock, or (B) to
subscribe for or purchase Common Stock or securities convertible or exchangeable
into shares of Common Stock, then such record date shall be deemed to be the
date of the issue or sale of the shares of Common Stock deemed to have been
issued or sold upon the declaration of such dividend or the making of such other
distribution or the date of the granting of such right of subscription or
purchase, as the case may be.

                            (ii) Treasury Shares. The number of shares of Common
Stock outstanding at any given time shall not include shares owned or held by or
for the account of the Company, and the disposition of any such shares shall be
considered an issue or sale of Common Stock.

                        (g) All calculations under this Section 8 shall be made
to the nearest cent or the nearest 1/100th of a share, as the case may be.

                        (h) Whenever the Exercise Price is adjusted pursuant to
Section 8(c) above, the Holder, after receipt of the determination by the
Appraiser, shall have the right to select an additional appraiser (which shall
be a nationally recognized accounting firm), in which case the adjustment shall
be equal to the average of the adjustments recommended by each of the Appraiser
and such appraiser. The Holder shall promptly mail or cause to be mailed to the
Company, a notice setting forth the Exercise Price after such adjustment and
setting forth a brief statement of the facts requiring such adjustment. Such
adjustment shall become effective immediately after the record date mentioned
above.

                            (i) If:

                                      (i)    the Company shall declare a
                                             dividend (or any other
                                             distribution) on its Common Stock;
                                             or

                                      (ii)   the Company shall declare a special
                                             nonrecurring cash dividend on or a
                                             redemption of its Common Stock; or

                                      (iii)  the Company shall authorize the
                                             granting to all holders of the
                                             Common Stock rights or warrants to
                                             subscribe for or purchase any
                                             shares of capital stock of any
                                             class or of any rights; or

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                                      (iv)   the approval of any stockholders of
                                             the Company shall be required in
                                             connection with any
                                             reclassification of the Common
                                             Stock, any consolidation or merger
                                             to which the Company is a party,
                                             any sale or transfer of all or
                                             substantially all of the assets of
                                             the Company, or any compulsory
                                             share exchange whereby the Common
                                             Stock is converted into other
                                             securities, cash or property; or

                                      (v)    the Company shall authorize the
                                             voluntary dissolution, liquidation
                                             or winding up of the affairs of the
                                             Company,

then the Company shall cause to be mailed to each Holder at their last addresses
as they shall appear upon the Warrant Register, at least 20 calendar days prior
to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, redemption, rights or warrants, or if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distributions, redemption, rights or warrants are to
be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or
close, and the date as of which it is expected that holders of Common Stock of
record shall be entitled to exchange their shares of Common Stock for
securities, cash or other property deliverable upon such reclassification,
consolidation, merger, sale, transfer, share exchange, dissolution, liquidation
or winding up; provided, however, that the failure to mail such notice or any
defect therein or in the mailing thereof shall not affect the validity of the
corporate action required to be specified in such notice.

                9. Payment of Exercise Price. The Holder shall pay the Exercise
Price in one of the following manners:

                        (a) Cash Exercise. The Holder may deliver immediately
available funds; or

                        (b) Cashless Exercise. The Holder may surrender this
Warrant to the Company together with a notice of cashless exercise, in which
event the Company shall issue to the Holder the number of Warrant Shares
determined as follows:

                            X = Y [(A-B)/A]
        where:
                            X = the number of Warrant Shares to be issued
        to the Holder.

                            Y = the number of Warrant Shares with respect to
                            which this Warrant is being exercised.

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                             A = the average of the closing sale prices of the
                             Common Stock for the five (5) trading days
                             immediately prior to (but not including) the Date
                             of Exercise.

                             B = the Exercise Price.

For purposes of Rule 144 promulgated under the Securities Act, it is intended,
understood and acknowledged that the Warrant Shares issued in a cashless
exercise transaction shall be deemed to have been acquired by the Holder, and
the holding period for the Warrant Shares shall be deemed to have been
commenced, on the issue date.

                10. Certain Exercise Restrictions.

                        (a) A Holder may not exercise this Warrant to the extent
such exercise would result in the Holder, together with any affiliate thereof,
beneficially owning (as determined in accordance with Section 13(d) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act") and the rules
promulgated thereunder) in excess of 4.999% of the then issued and outstanding
shares of Common Stock, including shares issuable upon such exercise and held by
such Holder after application of this Section. Since the Holder will not be
obligated to report to the Company the number of shares of Common Stock it may
hold at the time of an exercise hereunder, unless the exercise at issue would
result in the issuance of shares of Common Stock in excess of 4.999% of the then
outstanding shares of Common Stock without regard to any other shares which may
be beneficially owned by the Holder or an affiliate thereof, the Holder shall
have the authority and obligation to determine whether the restriction contained
in this Section will limit any particular exercise hereunder and to the extent
that the Holder determines that the limitation contained in this Section
applies, the determination of which portion of this Warrant is exercisable shall
be the responsibility and obligation of the Holder. If the Holder has delivered
a Form of Election to Purchase for a number of Warrant Shares that, without
regard to any other shares that the Holder or its affiliates may beneficially
own, would result in the issuance in excess of the permitted amount hereunder,
the Company shall notify the Holder of this fact and shall honor the exercise
for the maximum portion of this Warrant permitted to be exercised on such Date
of Exercise in accordance with the periods described herein and, at the option
of the Holder, either keep the portion of the Warrant tendered for exercise in
excess of the permitted amount hereunder for future exercises or return such
excess portion of the Warrant to the Holder. The provisions of this Section may
be waived by a Holder (but only as to itself and not to any other Holder) upon
not less than 61 days prior notice to the Company. Other Holders shall be
unaffected by any such waiver.

                        (b) A Holder may not exercise this Warrant to the extent
such exercise would result in the Holder, together with any affiliate thereof,
beneficially owning (as determined in accordance with Section 13(d) of the
Exchange Act and the rules promulgated thereunder) in excess of 9.999% of the
then issued and outstanding shares of Common Stock, including shares issuable
upon such exercise and held by such Holder after application of this Section.
Since the Holder will not be obligated to report to the Company the number of
shares of Common Stock it may hold at the time of an exercise hereunder, unless
the exercise at issue

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would result in the issuance of shares of Common Stock in excess of 9.999% of
the then outstanding shares of Common Stock without regard to any other shares
which may be beneficially owned by the Holder or an affiliate thereof, the
Holder shall have the authority and obligation to determine whether the
restriction contained in this Section will limit any particular exercise
hereunder and to the extent that the Holder determines that the limitation
contained in this Section applies, the determination of which portion of this
Warrant is exercisable shall be the responsibility and obligation of the Holder.
If the Holder has delivered a Form of Election to Purchase for a number of
Warrant Shares that, without regard to any other shares that the Holder or its
affiliates may beneficially own, would result in the issuance in excess of the
permitted amount hereunder, the Company shall notify the Holder of this fact and
shall honor the exercise for the maximum portion of this Warrant permitted to be
exercised on such Date of Exercise in accordance with the periods described
herein and, at the option of the Holder, either keep the portion of the Warrant
tendered for exercise in excess of the permitted amount hereunder for future
exercises or return such excess portion of the Warrant to the Holder. The
provisions of this Section may be waived by a Holder (but only as to itself and
not to any other Holder) upon not less than 61 days prior notice to the Company.
Other Holders shall be unaffected by any such waiver.

                11. Fractional Shares. The Company shall not be required to
issue or cause to be issued fractional Warrant Shares on the exercise of this
Warrant. The number of full Warrant Shares which shall be issuable upon the
exercise of this Warrant shall be computed on the basis of the aggregate number
of Warrant Shares purchasable on exercise of this Warrant so presented. If any
fraction of a Warrant Share would, except for the provisions of this Section, be
issuable on the exercise of this Warrant, the Company shall pay an amount in
cash equal to the Exercise Price multiplied by such fraction.

                12. Notices. Any and all notices or other communications or
deliveries hereunder shall be in writing and shall be deemed given and effective
on the earliest of (i) the date of transmission, if such notice or communication
is delivered via facsimile at the facsimile telephone number specified in this
Section prior to 6:30 p.m. (New York City time) on a business day, (ii) the
business day after the date of transmission, if such notice or communication is
delivered via facsimile at the facsimile telephone number specified in this
Section later than 6:30 p.m. (New York City time) on any date and earlier than
11:59 p.m. (New York City time) on such date, (iii) the business day following
the date of mailing, if sent by nationally recognized overnight courier service,
or (iv) upon actual receipt by the party to whom such notice is required to be
given. The addresses for such communications shall be: (i) if to the Company, to
13114 Evening Creek Drive South San Diego, California 92128, Facsimile No.:
(858) 486-3922, attn: Chief Executive Officer, or (ii) if to the Holder, to the
Holder at the address or facsimile number appearing on the Warrant Register or
such other address or facsimile number as the Holder may provide to the Company
in accordance with this Section.

                13. Warrant Agent. The Company shall serve as warrant agent
under this Warrant. Upon thirty days' notice to the Holder, the Company may
appoint a new warrant agent. Any corporation into which the Company or any new
warrant agent may be merged or any corporation resulting from any consolidation
to which the Company or any new warrant

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<PAGE>   10

agent shall be a party or any corporation to which the Company or any new
warrant agent transfers substantially all of its corporate trust or shareholders
services business shall be a successor warrant agent under this Warrant without
any further act. Any such successor warrant agent shall promptly cause notice of
its succession as warrant agent to be mailed (by first class mail, postage
prepaid) to the Holder at the Holder's last address as shown on the Warrant
Register.

                14. Miscellaneous.

                        (a) This Warrant shall be binding on and inure to the
benefit of the parties hereto and their respective successors and assigns. This
Warrant may be amended only in writing signed by the Company and the Holder and
their successors and assigns.

                        (b) Subject to Section 14(a), above, nothing in this
Warrant shall be construed to give to any person or corporation other than the
Company and the Holder any legal or equitable right, remedy or cause under this
Warrant. This Warrant shall inure to the sole and exclusive benefit of the
Company and the Holder.

                        (c) The corporate laws of the State of Delaware shall
govern all issues concerning the relative rights of the Company and its
stockholders. All other questions concerning the construction, validity,
enforcement and interpretation of this Warrant shall be governed by and
construed and enforced in accordance with the internal laws of the State of New
York, without regard to the principles of conflicts of law thereof. The Company
and the Holder hereby irrevocably submit to the exclusive jurisdiction of the
state and federal courts sitting in the City of New York, borough of Manhattan,
for the adjudication of any dispute hereunder or in connection herewith or with
any transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, or that
such suit, action or proceeding is improper. Each of the Company and the Holder
hereby irrevocably waives personal service of process and consents to process
being served in any such suit, action or proceeding by receiving a copy thereof
sent to the Company at the address in effect for notices to it under this
instrument and agrees that such service shall constitute good and sufficient
service of process and notice thereof. Nothing contained herein shall be deemed
to limit in any way any right to serve process in any manner permitted by law.

                        (d) The headings herein are for convenience only, do not
constitute a part of this Warrant and shall not be deemed to limit or affect any
of the provisions hereof.

                        (e) In case any one or more of the provisions of this
Warrant shall be invalid or unenforceable in any respect, the validity and
enforceability of the remaining terms and provisions of this Warrant shall not
in any way be affected or impaired thereby and the parties will attempt in good
faith to agree upon a valid and enforceable provision which shall be a
commercially reasonable substitute therefor, and upon so agreeing, shall
incorporate such substitute provision in this Warrant.

                            [SIGNATURE PAGE FOLLOWS]

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                IN WITNESS WHEREOF, the Company has caused this Warrant to be
duly executed by its authorized officer as of the date first indicated above.

                                       E.DIGITAL CORPORATION

                                       By:
                                          --------------------------------------
                                       Name:
                                       Title:

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<PAGE>   12

                          FORM OF ELECTION TO PURCHASE

To e.Digital Corporation:

        Reference is made to the Warrant issued by of e.Digital Corporation on
October 5, 2000 to acquire up to 138,568 shares of common stock, $.001 par value
per share, of e.Digital Corporation (the "Common Stock").

        The undersigned hereby irrevocably elects to purchase shares of Common
Stock under the Warrant and , if such Holder is not utilizing the cashless
exercise provisions set forth in the Warrant, encloses herewith $________ in
cash, certified or official bank check or checks, which sum represents the
aggregate Exercise Price (as defined in the Warrant) for the number of shares of
Common Stock to which this Form of Election to Purchase relates, together with
any applicable taxes payable by the undersigned pursuant to the Warrant.

        The undersigned requests that certificates for the shares of Common
Stock issuable upon this exercise be issued in the name of

                                       PLEASE INSERT SOCIAL SECURITY OR

                                       TAX IDENTIFICATION NUMBER

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

--------------------------------------------------------------------------------
                         (Please print name and address)

Dated:         ,                      Name of Holder:
      --------- --------

                                      (Print)
                                             -----------------------------------

                                      (By:)
                                           -------------------------------------
                                      (Name:)
                                      (Title:)
                                      (Signature must conform in all respects to
                                      name of holder as specified on the face of
                                      the Warrant)

                                      -12-
<PAGE>   13

                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

        FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto ________________________________ the right represented by the within
Warrant to purchase ____________ shares of Common Stock of e.Digital Corporation
to which the within Warrant relates and appoints ________________ attorney to
transfer said right on the books of e.Digital Corporation with full power of
substitution in the premises.

Dated:

               ,
--------------- -----

                              --------------------------------------------------
                              (Signature must conform in all respects to name of
                              holder as specified on the face of the Warrant)

                              --------------------------------------------------
                              Address of Transferee

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

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

In the presence of:

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

                                      -13-
<PAGE>   14

                                     Annex A

<TABLE>
<CAPTION>
                            Number of Warrant                              Number of Warrant
                            Shares Vested at      Applicable Exercise      Shares Not
Closing/Vesting Date        Such Closing          Price                    Previously Exercised
<S>                         <C>                   <C>                      <C>

</TABLE>

                                      -14-<PAGE>   1
                                                                     EXHIBIT 4.4

NEITHER THESE SECURITIES NOR THE SECURITIES INTO WHICH THESE SECURITIES ARE
EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR
THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM
REGISTRATION UNDER SECURITIES ACT OF 1933, AS AMENDED (THE "SECURITIES ACT"),
AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE
EXEMPTION FROM THE REGISTRATION REQUIREMENTS THEREUNDER AND IN COMPLIANCE WITH
APPLICABLE STATE SECURITIES OR BLUE SKY LAWS.

                              E.DIGITAL CORPORATION

                                     WARRANT

Warrant No.6                                              Dated: October 5, 2000

        e.Digital Corporation, a Delaware corporation (the "Company"), hereby
certifies that, for value received, Jesup & Lamont Securities Corporation or its
registered assigns ("Holder"), is entitled, subject to the terms set forth
below, to purchase from the Company up to a total of 138,568 shares of common
stock, $.001 par value per share (the "Common Stock"), of the Company (each such
share, a "Warrant Share" and all such shares, the "Warrant Shares") at an
exercise price equal to $5.20 per share (as adjusted from time to time as
provided in Section 8, the "Exercise Price"), at any time and from time to time
from and after the date hereof and through and including October 5, 2005 (the
"Expiration Date"), and subject to the following terms and conditions:

                1. Registration of Warrant. The Company shall register this
Warrant, upon records to be maintained by the Company for that purpose (the
"Warrant Register"), in the name of the record Holder hereof from time to time.
The Company may deem and treat the registered Holder of this Warrant as the
absolute owner hereof for the purpose of any exercise hereof or any distribution
to the Holder, and for all other purposes, and the Company shall not be affected
by notice to the contrary.

                2. Registration of Transfers and Exchanges.

                        (a) The Company shall register the transfer of any
portion of this Warrant in the Warrant Register, upon surrender of this Warrant,
with the Form of Assignment attached hereto duly completed and signed, to the
Transfer Agent or to the Company at its address for notice set forth in Section
12. Upon any such registration or transfer, a new warrant to purchase Common
Stock, in substantially the form of this Warrant (any such new warrant, a "New
Warrant"), evidencing the portion of this Warrant so transferred shall be issued
to the transferee and a New Warrant evidencing the remaining portion of this
Warrant not so transferred, if any, shall be issued to the transferring Holder.
The acceptance of the New

<PAGE>   2

Warrant by the transferee thereof shall be deemed the acceptance of such
transferee of all of the rights and obligations of a holder of a Warrant.

                        (b) This Warrant is exchangeable, upon the surrender
hereof by the Holder to the office of the Company at its address for notice set
forth in Section 12 for one or more New Warrants, evidencing in the aggregate
the right to purchase the number of Warrant Shares which may then be purchased
hereunder. Any such New Warrant will be dated the date of such exchange.

                3. Duration and Exercise of Warrants.

                        (a) This Warrant shall be exercisable by the registered
Holder on any business day before 6:30 P.M., New York City time, at any time and
from time to time on or after the date hereof to and including the Expiration
Date. At 6:30 P.M., New York City time on the Expiration Date, the portion of
this Warrant not exercised prior thereto shall be and become void and of no
value.

                        (b) Upon delivery of a duly completed and signed Form of
Election to Purchase attached hereto (and the grid attached hereto as Annex A)
duly completed and signed, to the Company at its address for notice set forth in
Section 12 and upon payment of the Exercise Price multiplied by the number of
Warrant Shares that the Holder intends to purchase hereunder, in the manner
provided hereunder, all as specified by the Holder in the Form of Election to
Purchase, the Company shall promptly (but in no event later than 3 business days
after the Date of Exercise (as defined herein)) issue or cause to be issued and
cause to be delivered to or upon the written order of the Holder and in such
name or names as the Holder may designate, a certificate for the Warrant Shares
issuable upon such exercise, free of restrictive legends except (i) either in
the event that a registration statement covering the resale of the Warrant
Shares and naming the Holder as a selling stockholder thereunder is not then
effective or the Warrant Shares are not freely transferable without volume
restrictions pursuant to Rule 144(k) promulgated under the Securities Act of
1933, as amended (the "Securities Act"), or (ii) if this Warrant shall have been
issued pursuant to a written agreement between the original Holder and the
Company, as required by such agreement. Any person so designated by the Holder
to receive Warrant Shares shall be deemed to have become holder of record of
such Warrant Shares as of the Date of Exercise of this Warrant. The Company
shall, upon request of the Holder, if available, use its best efforts to deliver
Warrant Shares hereunder electronically through the Depository Trust Corporation
or another established clearing corporation performing similar functions.

                        A "Date of Exercise" means the date on which the Company
shall have received (i) the Form of Election to Purchase completed and duly
signed, and (ii) payment of the Exercise Price for the number of Warrant Shares
so indicated by the Holder to be purchased.

                        (c) This Warrant shall be exercisable, either in its
entirety or, from time to time, for a portion of the number of Warrant Shares.

                                      -2-
<PAGE>   3

                        (d) Commencing at any time after the date of the
issuance of this Warrant, if (i) the average closing bid price of the Common
Stock on the OTC Bulletin Board (or such national securities exchange on which
the Common Stock is then listed or quoted for trading) for any 10 consecutive
trading days (a "Trigger Period") exceeds $10.40, and (ii) the Warrant Shares
are either registered for resale pursuant to an effective registration statement
naming the Holder as a selling stockholder thereunder or freely transferable
without volume restrictions pursuant to Rule 144(k) promulgated under the
Securities Act, then the Company shall have the right, upon 10 days' notice to
the Holder given not later than ten (10) Trading Days after the conclusion of
any such Trigger Period (the "Call Notice"), to redeem all of the then issuable
Warrant Shares at a price of $.001 per Warrant Share (the "Call Price"), on the
date set forth in the Call Notice, but in no event earlier than 10 days
following the date of the receipt by the Holder of the Call Notice (the "Call
Date"). The Holder may exercise this Warrant at any time prior to the Call Date.
Any portion of this Warrant not exercised by 6:30 p.m. (New York City time) on
the Call Date shall no longer be exercisable and shall be returned to the
Company (and, if not so returned, shall automatically be deemed canceled), and
the Company, upon its receipt of the unexercised portion of this Warrant, shall
issue therefor in full and complete satisfaction of its obligations under such
remaining portion of this Warrant to the Holder an amount equal to the number of
shares of Common Stock then issuable hereunder multiplied by the Call Price.

                4. Piggyback Registration Rights. This Warrant is subject to the
piggyback registration rights granted under the Registration Rights Agreement
and such piggyback registration rights shall continue until all of the Holder's
Warrant Shares have been sold in accordance with an effective registration
statement or upon the Expiration Date. The Company will pay all registration
expenses in connection therewith.

                5. Payment of Taxes. The Company will pay all documentary stamp
taxes attributable to the issuance of Warrant Shares upon the exercise of this
Warrant; provided, however, that the Company shall not be required to pay any
tax which may be payable in respect of any transfer involved in the registration
of any certificates for Warrant Shares or Warrants in a name other than that of
the Holder. The Holder shall be responsible for all other tax liability that may
arise as a result of holding or transferring this Warrant or receiving Warrant
Shares upon exercise hereof.

                6. Replacement of Warrant. If this Warrant is mutilated, lost,
stolen or destroyed, the Company shall issue or cause to be issued in exchange
and substitution for and upon cancellation hereof, or in lieu of and
substitution for this Warrant, a New Warrant, but only upon receipt of evidence
reasonably satisfactory to the Company of such loss, theft or destruction and
indemnity, if requested, satisfactory to it. Applicants for a New Warrant under
such circumstances shall also comply with such other reasonable regulations and
procedures and pay such other reasonable charges as the Company may prescribe.

                7. Reservation of Warrant Shares. The Company covenants that it
will at all times reserve and keep available out of the aggregate of its
authorized but unissued Common Stock, solely for the purpose of enabling it to
issue Warrant Shares upon exercise of this Warrant

                                      -3-
<PAGE>   4

as herein provided, the number of Warrant Shares which are then issuable and
deliverable upon the exercise of this entire Warrant, free from preemptive
rights or any other actual contingent purchase rights of persons other than the
Holder (taking into account the adjustments and restrictions of Section 8). The
Company covenants that all Warrant Shares that shall be so issuable and
deliverable shall, upon issuance and the payment of the applicable Exercise
Price in accordance with the terms hereof, be duly and validly authorized,
issued and fully paid and nonassessable.

                8. Certain Adjustments. The Exercise Price and number of Warrant
Shares issuable upon exercise of this Warrant are subject to adjustment from
time to time as set forth in this Section 8.

                        (a) If the Company, at any time while this Warrant is
outstanding, (i) shall pay a stock dividend (except scheduled dividends paid on
outstanding preferred stock as of the date hereof which contain a stated
dividend rate) or otherwise make a distribution or distributions on shares of
its Common Stock or on any other class of capital stock payable in shares of
Common Stock, (ii) subdivide outstanding shares of Common Stock into a larger
number of shares, or (iii) combine outstanding shares of Common Stock into a
smaller number of shares, the Exercise Price shall be multiplied by a fraction
of which the numerator shall be the number of shares of Common Stock (excluding
treasury shares, if any) outstanding before such event and of which the
denominator shall be the number of shares of Common Stock (excluding treasury
shares, if any) outstanding after such event. Any adjustment made pursuant to
this Section shall become effective immediately after the record date for the
determination of stockholders entitled to receive such dividend or distribution
and shall become effective immediately after the effective date in the case of a
subdivision or combination, and shall apply to successive subdivisions and
combinations.

                        (b) In case of any reclassification of the Common Stock
or any compulsory share exchange pursuant to which the Common Stock is converted
into other securities, cash or property, then the Holder shall have the right
thereafter to exercise this Warrant only into the shares of stock and other
securities and property receivable upon or deemed to be held by holders of
Common Stock following such reclassification or share exchange, and the Holder
shall be entitled upon such event to receive such amount of securities or
property equal to the amount of Warrant Shares such Holder would have been
entitled to had such Holder exercised this Warrant immediately prior to such
reclassification or share exchange. The terms of any such reclassification or
share exchange shall include such terms so as to continue to give to the Holder
the right to receive the securities or property set forth in this Section 8(b)
upon any exercise following any such reclassification or share exchange.

                        (c) If the Company, at any time while this Warrant is
outstanding, shall distribute to all holders of Common Stock (and not to holders
of this Warrant) evidences of its indebtedness or assets or rights or warrants
to subscribe for or purchase any security (excluding those referred to in
Sections 8(a), (b) and (d)), then in each such case the Exercise Price shall be
determined by multiplying the Exercise Price in effect immediately prior to the
record date fixed for determination of stockholders entitled to receive such
distribution by a fraction of which the denominator shall be the Exercise Price
determined as of the record date

                                      -4-
<PAGE>   5

mentioned above, and of which the numerator shall be such Exercise Price on such
record date less the then fair market value at such record date of the portion
of such assets or evidence of indebtedness so distributed applicable to one
outstanding share of Common Stock as determined by the Company's independent
certified public accountants that regularly examines the financial statements of
the Company (an "Appraiser").

                        (d) If the Company or any subsidiary thereof, as
applicable with respect to Common Stock Equivalents (as defined below), at any
time while this Warrant is outstanding, shall issue shares of Common Stock or
rights, warrants, options or other securities or debt that are convertible into
or exchangeable for shares of Common Stock ("Common Stock Equivalents"),
entitling any Person to acquire shares of Common Stock at a price per share less
than the Exercise Price (if the holder of the Common Stock or Common Stock
Equivalent so issued shall at any time, whether by operation of purchase price
adjustments, reset provisions, floating conversion, exercise or exchange prices
or otherwise, or due to warrants, options or rights issued in connection with
such issuance, be entitled to receive shares of Common Stock at a price less
than the Exercise Price, such issuance shall be deemed to have occurred for less
than the Exercise Price), then, at the sole option of the Holder, the Exercise
Price shall be adjusted to mirror the conversion, exchange or purchase price for
such Common Stock Equivalents (including any reset provisions thereof),
provided, that for purposes hereof, all shares of Common Stock that are issuable
upon conversion, exercise or exchange of Common Stock Equivalents shall be
deemed outstanding immediately after the issuance of such Common Stock
Equivalents. Such adjustment shall be made whenever such shares of Common Stock
or Common Stock Equivalents are issued.

                        (e) In case of any (1) merger or consolidation of the
Company with or into another Person, or (2) sale by the Company of more than
one-half of the assets of the Company (on a book value basis) in one or a series
of related transactions, the Holder shall have the right thereafter to (A)
exercise this Warrant for the shares of stock and other securities, cash and
property receivable upon or deemed to be held by holders of Common Stock
following such merger, consolidation or sale, and the Holder shall be entitled
upon such event or series of related events to receive such amount of
securities, cash and property as the Common Stock for which this Warrant could
have been exercised immediately prior to such merger, consolidation or sales
would have been entitled or (B) in the case of a merger or consolidation, (x)
require the surviving entity to issue common stock purchase warrants equal to
the number Warrant Shares to which this Warrant then permits, which newly
warrant shall be identical to this Warrant, and (y) simultaneously with the
issuance of such warrant, the Holder of such warrant shall have the right to
exercise such warrant only into shares of stock and other securities, cash and
property receivable upon or deemed to be held by holders of Common Stock
following such merger or consolidation or (C) require the surviving entity from
such merger, acquisition or business combination to pay to the Holder, in cash,
the Black Scholes value of this Warrant. In the case of clause (B), the exercise
price for such new warrant shall be based upon the amount of securities, cash
and property that each share of Common Stock would receive in such transaction
and the Exercise Price of this Warrant immediately prior to the effectiveness or
closing date for such transaction. The terms of any such merger, sale or
consolidation shall include such terms so as continue to give the Holder the
right to receive the securities, cash and property set forth in

                                      -5-
<PAGE>   6

this Section upon any conversion or redemption following such event. This
provision shall similarly apply to successive such events.

                        (f) For the purposes of this Section 8, the following
clauses shall also be applicable:

                            (i) Record Date. In case the Company shall take a
record of the holders of its Common Stock for the purpose of entitling them (A)
to receive a dividend or other distribution payable in Common Stock or in
securities convertible or exchangeable into shares of Common Stock, or (B) to
subscribe for or purchase Common Stock or securities convertible or exchangeable
into shares of Common Stock, then such record date shall be deemed to be the
date of the issue or sale of the shares of Common Stock deemed to have been
issued or sold upon the declaration of such dividend or the making of such other
distribution or the date of the granting of such right of subscription or
purchase, as the case may be.

                            (ii) Treasury Shares. The number of shares of Common
Stock outstanding at any given time shall not include shares owned or held by or
for the account of the Company, and the disposition of any such shares shall be
considered an issue or sale of Common Stock.

                        (g) All calculations under this Section 8 shall be made
to the nearest cent or the nearest 1/100th of a share, as the case may be.

                        (h) Whenever the Exercise Price is adjusted pursuant to
Section 8(c) above, the Holder, after receipt of the determination by the
Appraiser, shall have the right to select an additional appraiser (which shall
be a nationally recognized accounting firm), in which case the adjustment shall
be equal to the average of the adjustments recommended by each of the Appraiser
and such appraiser. The Holder shall promptly mail or cause to be mailed to the
Company, a notice setting forth the Exercise Price after such adjustment and
setting forth a brief statement of the facts requiring such adjustment. Such
adjustment shall become effective immediately after the record date mentioned
above.

                            (i) If:

                                      (i)    the Company shall declare a
                                             dividend (or any other
                                             distribution) on its Common Stock;
                                             or

                                      (ii)   the Company shall declare a special
                                             nonrecurring cash dividend on or a
                                             redemption of its Common Stock; or

                                      (iii)  the Company shall authorize the
                                             granting to all holders of the
                                             Common Stock rights or warrants to
                                             subscribe for or purchase any
                                             shares of capital stock of any
                                             class or of any rights; or

                                      -6-
<PAGE>   7

                                      (iv)   the approval of any stockholders of
                                             the Company shall be required in
                                             connection with any
                                             reclassification of the Common
                                             Stock, any consolidation or merger
                                             to which the Company is a party,
                                             any sale or transfer of all or
                                             substantially all of the assets of
                                             the Company, or any compulsory
                                             share exchange whereby the Common
                                             Stock is converted into other
                                             securities, cash or property; or

                                      (v)    the Company shall authorize the
                                             voluntary dissolution, liquidation
                                             or winding up of the affairs of the
                                             Company,

then the Company shall cause to be mailed to each Holder at their last addresses
as they shall appear upon the Warrant Register, at least 20 calendar days prior
to the applicable record or effective date hereinafter specified, a notice
stating (x) the date on which a record is to be taken for the purpose of such
dividend, distribution, redemption, rights or warrants, or if a record is not to
be taken, the date as of which the holders of Common Stock of record to be
entitled to such dividend, distributions, redemption, rights or warrants are to
be determined or (y) the date on which such reclassification, consolidation,
merger, sale, transfer or share exchange is expected to become effective or
close, and the date as of which it is expected that holders of Common Stock of
record shall be entitled to exchange their shares of Common Stock for
securities, cash or other property deliverable upon such reclassification,
consolidation, merger, sale, transfer, share exchange, dissolution, liquidation
or winding up; provided, however, that the failure to mail such notice or any
defect therein or in the mailing thereof shall not affect the validity of the
corporate action required to be specified in such notice.

                9. Payment of Exercise Price. The Holder shall pay the Exercise
Price in one of the following manners:

                        (a) Cash Exercise. The Holder may deliver immediately
available funds; or

                        (b) Cashless Exercise. The Holder may surrender this
Warrant to the Company together with a notice of cashless exercise, in which
event the Company shall issue to the Holder the number of Warrant Shares
determined as follows:

                            X = Y [(A-B)/A]
        where:
                            X = the number of Warrant Shares to be issued
        to the Holder.

                            Y = the number of Warrant Shares with respect to
                            which this Warrant is being exercised.

                                      -7-
<PAGE>   8

                             A = the average of the closing sale prices of the
                             Common Stock for the five (5) trading days
                             immediately prior to (but not including) the Date
                             of Exercise.

                             B = the Exercise Price.

For purposes of Rule 144 promulgated under the Securities Act, it is intended,
understood and acknowledged that the Warrant Shares issued in a cashless
exercise transaction shall be deemed to have been acquired by the Holder, and
the holding period for the Warrant Shares shall be deemed to have been
commenced, on the issue date.

                10. Certain Exercise Restrictions.

                        (a) A Holder may not exercise this Warrant to the extent
such exercise would result in the Holder, together with any affiliate thereof,
beneficially owning (as determined in accordance with Section 13(d) of the
Securities Exchange Act of 1934, as amended (the "Exchange Act") and the rules
promulgated thereunder) in excess of 4.999% of the then issued and outstanding
shares of Common Stock, including shares issuable upon such exercise and held by
such Holder after application of this Section. Since the Holder will not be
obligated to report to the Company the number of shares of Common Stock it may
hold at the time of an exercise hereunder, unless the exercise at issue would
result in the issuance of shares of Common Stock in excess of 4.999% of the then
outstanding shares of Common Stock without regard to any other shares which may
be beneficially owned by the Holder or an affiliate thereof, the Holder shall
have the authority and obligation to determine whether the restriction contained
in this Section will limit any particular exercise hereunder and to the extent
that the Holder determines that the limitation contained in this Section
applies, the determination of which portion of this Warrant is exercisable shall
be the responsibility and obligation of the Holder. If the Holder has delivered
a Form of Election to Purchase for a number of Warrant Shares that, without
regard to any other shares that the Holder or its affiliates may beneficially
own, would result in the issuance in excess of the permitted amount hereunder,
the Company shall notify the Holder of this fact and shall honor the exercise
for the maximum portion of this Warrant permitted to be exercised on such Date
of Exercise in accordance with the periods described herein and, at the option
of the Holder, either keep the portion of the Warrant tendered for exercise in
excess of the permitted amount hereunder for future exercises or return such
excess portion of the Warrant to the Holder. The provisions of this Section may
be waived by a Holder (but only as to itself and not to any other Holder) upon
not less than 61 days prior notice to the Company. Other Holders shall be
unaffected by any such waiver.

                        (b) A Holder may not exercise this Warrant to the extent
such exercise would result in the Holder, together with any affiliate thereof,
beneficially owning (as determined in accordance with Section 13(d) of the
Exchange Act and the rules promulgated thereunder) in excess of 9.999% of the
then issued and outstanding shares of Common Stock, including shares issuable
upon such exercise and held by such Holder after application of this Section.
Since the Holder will not be obligated to report to the Company the number of
shares of Common Stock it may hold at the time of an exercise hereunder, unless
the exercise at issue

                                      -8-
<PAGE>   9

would result in the issuance of shares of Common Stock in excess of 9.999% of
the then outstanding shares of Common Stock without regard to any other shares
which may be beneficially owned by the Holder or an affiliate thereof, the
Holder shall have the authority and obligation to determine whether the
restriction contained in this Section will limit any particular exercise
hereunder and to the extent that the Holder determines that the limitation
contained in this Section applies, the determination of which portion of this
Warrant is exercisable shall be the responsibility and obligation of the Holder.
If the Holder has delivered a Form of Election to Purchase for a number of
Warrant Shares that, without regard to any other shares that the Holder or its
affiliates may beneficially own, would result in the issuance in excess of the
permitted amount hereunder, the Company shall notify the Holder of this fact and
shall honor the exercise for the maximum portion of this Warrant permitted to be
exercised on such Date of Exercise in accordance with the periods described
herein and, at the option of the Holder, either keep the portion of the Warrant
tendered for exercise in excess of the permitted amount hereunder for future
exercises or return such excess portion of the Warrant to the Holder. The
provisions of this Section may be waived by a Holder (but only as to itself and
not to any other Holder) upon not less than 61 days prior notice to the Company.
Other Holders shall be unaffected by any such waiver.

                11. Fractional Shares. The Company shall not be required to
issue or cause to be issued fractional Warrant Shares on the exercise of this
Warrant. The number of full Warrant Shares which shall be issuable upon the
exercise of this Warrant shall be computed on the basis of the aggregate number
of Warrant Shares purchasable on exercise of this Warrant so presented. If any
fraction of a Warrant Share would, except for the provisions of this Section, be
issuable on the exercise of this Warrant, the Company shall pay an amount in
cash equal to the Exercise Price multiplied by such fraction.

                12. Notices. Any and all notices or other communications or
deliveries hereunder shall be in writing and shall be deemed given and effective
on the earliest of (i) the date of transmission, if such notice or communication
is delivered via facsimile at the facsimile telephone number specified in this
Section prior to 6:30 p.m. (New York City time) on a business day, (ii) the
business day after the date of transmission, if such notice or communication is
delivered via facsimile at the facsimile telephone number specified in this
Section later than 6:30 p.m. (New York City time) on any date and earlier than
11:59 p.m. (New York City time) on such date, (iii) the business day following
the date of mailing, if sent by nationally recognized overnight courier service,
or (iv) upon actual receipt by the party to whom such notice is required to be
given. The addresses for such communications shall be: (i) if to the Company, to
13114 Evening Creek Drive South San Diego, California 92128, Facsimile No.:
(858) 486-3922, attn: Chief Executive Officer, or (ii) if to the Holder, to the
Holder at the address or facsimile number appearing on the Warrant Register or
such other address or facsimile number as the Holder may provide to the Company
in accordance with this Section.

                13. Warrant Agent. The Company shall serve as warrant agent
under this Warrant. Upon thirty days' notice to the Holder, the Company may
appoint a new warrant agent. Any corporation into which the Company or any new
warrant agent may be merged or any corporation resulting from any consolidation
to which the Company or any new warrant

                                      -9-
<PAGE>   10

agent shall be a party or any corporation to which the Company or any new
warrant agent transfers substantially all of its corporate trust or shareholders
services business shall be a successor warrant agent under this Warrant without
any further act. Any such successor warrant agent shall promptly cause notice of
its succession as warrant agent to be mailed (by first class mail, postage
prepaid) to the Holder at the Holder's last address as shown on the Warrant
Register.

                14. Miscellaneous.

                        (a) This Warrant shall be binding on and inure to the
benefit of the parties hereto and their respective successors and assigns. This
Warrant may be amended only in writing signed by the Company and the Holder and
their successors and assigns.

                        (b) Subject to Section 14(a), above, nothing in this
Warrant shall be construed to give to any person or corporation other than the
Company and the Holder any legal or equitable right, remedy or cause under this
Warrant. This Warrant shall inure to the sole and exclusive benefit of the
Company and the Holder.

                        (c) The corporate laws of the State of Delaware shall
govern all issues concerning the relative rights of the Company and its
stockholders. All other questions concerning the construction, validity,
enforcement and interpretation of this Warrant shall be governed by and
construed and enforced in accordance with the internal laws of the State of New
York, without regard to the principles of conflicts of law thereof. The Company
and the Holder hereby irrevocably submit to the exclusive jurisdiction of the
state and federal courts sitting in the City of New York, borough of Manhattan,
for the adjudication of any dispute hereunder or in connection herewith or with
any transaction contemplated hereby or discussed herein, and hereby irrevocably
waives, and agrees not to assert in any suit, action or proceeding, any claim
that it is not personally subject to the jurisdiction of any such court, or that
such suit, action or proceeding is improper. Each of the Company and the Holder
hereby irrevocably waives personal service of process and consents to process
being served in any such suit, action or proceeding by receiving a copy thereof
sent to the Company at the address in effect for notices to it under this
instrument and agrees that such service shall constitute good and sufficient
service of process and notice thereof. Nothing contained herein shall be deemed
to limit in any way any right to serve process in any manner permitted by law.

                        (d) The headings herein are for convenience only, do not
constitute a part of this Warrant and shall not be deemed to limit or affect any
of the provisions hereof.

                        (e) In case any one or more of the provisions of this
Warrant shall be invalid or unenforceable in any respect, the validity and
enforceability of the remaining terms and provisions of this Warrant shall not
in any way be affected or impaired thereby and the parties will attempt in good
faith to agree upon a valid and enforceable provision which shall be a
commercially reasonable substitute therefor, and upon so agreeing, shall
incorporate such substitute provision in this Warrant.

                            [SIGNATURE PAGE FOLLOWS]

                                      -10-
<PAGE>   11

                IN WITNESS WHEREOF, the Company has caused this Warrant to be
duly executed by its authorized officer as of the date first indicated above.

                                       E.DIGITAL CORPORATION

                                       By:
                                          --------------------------------------
                                       Name:
                                       Title:

                                      -11-
<PAGE>   12

                          FORM OF ELECTION TO PURCHASE

To e.Digital Corporation:

        Reference is made to the Warrant issued by of e.Digital Corporation on
October 5, 2000 to acquire up to 138,568 shares of common stock, $.001 par value
per share, of e.Digital Corporation (the "Common Stock").

        The undersigned hereby irrevocably elects to purchase shares of Common
Stock under the Warrant and , if such Holder is not utilizing the cashless
exercise provisions set forth in the Warrant, encloses herewith $________ in
cash, certified or official bank check or checks, which sum represents the
aggregate Exercise Price (as defined in the Warrant) for the number of shares of
Common Stock to which this Form of Election to Purchase relates, together with
any applicable taxes payable by the undersigned pursuant to the Warrant.

        The undersigned requests that certificates for the shares of Common
Stock issuable upon this exercise be issued in the name of

                                       PLEASE INSERT SOCIAL SECURITY OR

                                       TAX IDENTIFICATION NUMBER

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

--------------------------------------------------------------------------------
                         (Please print name and address)

Dated:         ,                      Name of Holder:
      --------- --------

                                      (Print)
                                             -----------------------------------

                                      (By:)
                                           -------------------------------------
                                      (Name:)
                                      (Title:)
                                      (Signature must conform in all respects to
                                      name of holder as specified on the face of
                                      the Warrant)

                                      -12-
<PAGE>   13

                               FORM OF ASSIGNMENT

           [To be completed and signed only upon transfer of Warrant]

        FOR VALUE RECEIVED, the undersigned hereby sells, assigns and transfers
unto ________________________________ the right represented by the within
Warrant to purchase ____________ shares of Common Stock of e.Digital Corporation
to which the within Warrant relates and appoints ________________ attorney to
transfer said right on the books of e.Digital Corporation with full power of
substitution in the premises.

Dated:

               ,
--------------- -----

                              --------------------------------------------------
                              (Signature must conform in all respects to name of
                              holder as specified on the face of the Warrant)

                              --------------------------------------------------
                              Address of Transferee

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

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

In the presence of:

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

                                      -13-
<PAGE>   14

                                     Annex A

<TABLE>
<CAPTION>
                            Number of Warrant                              Number of Warrant
                            Shares Vested at      Applicable Exercise      Shares Not
Closing/Vesting Date        Such Closing          Price                    Previously Exercised
<S>                         <C>                   <C>                      <C>

</TABLE>

                                      -14-

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