Document:

Exhibit 4.1

 

	
    NUMBER

    U-____________

     
	 	UNITS
	SEE REVERSE FOR

CERTAIN

 DEFINITIONS	AQUARIUS II ACQUISITION CORP.	 

 

CUSIP: G0441M 119

 

UNITS CONSISTING OF ONE
ORDINARY SHARE, ONE WARRANT AND ONE RIGHT

 

THIS CERTIFIES THAT _______________________________________________________________

 

is the owner of ______________________________________________________________________Units.

 

Each Unit (“Unit”) consists of one ordinary share, with
a par value $0.0001 per share, of Aquarius II Acquisition Corp., a Cayman Islands company (the “Company”), and one redeemable
warrant (“Warrant(s)”) and one right (“Right(s)”). Each whole redeemable Warrant entitles the holder
thereof to purchase one ordinary share at a price of $11.50 per share (subject to adjustment), upon the later to occur of (i) 30 days
after the Company’s completion of a merger, share exchange, asset acquisition, share purchase, recapitalization, reorganization
or other similar business combination with one or more businesses or entities (a “Business Combination”) and (ii) 9 months
from the date that the registration statement is declared effective by the Securities and Exchange Commission (the “SEC”).
Each right entitles the holder thereof to receive one-fifth (1/5) of one ordinary share upon consummation of a Business Combination. The
ordinary shares, Warrants and Rights comprising the Units represented by this certificate are not transferable separately prior to the
52nd day after the date of the prospectus relating to the Company’s initial public offering, unless EF Hutton, division of Benchmark
Investments, LLC (“EF Hutton”) as the representative of the underwriters, determines that an earlier date is acceptable, but
in no event will the ordinary shares and Warrants be traded separately until the Company files with the SEC a current report on Form 8-K
which includes an audited balance sheet reflecting the receipt by the Company of the gross proceeds from its initial public offering including
the proceeds received by the Company from the exercise of the over-allotment option thereto, if the over-allotment option is exercised.
If the over-allotment option is exercised after the date of the prospectus, we will file an amendment to the Form 8-K or a new Form 8-K
to provide updated financial information to reflect the exercise of the over-allotment option. We will also include in the Form 8-K, or
amendment thereto, or in a subsequent Form 8-K, information indicating if the underwriters has allowed separate trading of the ordinary
shares, Warrant and Rights prior to the 52nd day after the date of the prospectus.

 

The terms of the Warrants are governed by a warrant agreement (the
“Warrant Agreement”), dated as of [____], 202_, and the terms of the Rights are governed by a rights agreement (the “Rights
Agreement”), dated as of [____], 202_, both between the Company and American Stock Transfer & Trust Company, LLC as the warrant
agent/right agent, and are subject to the terms and provisions contained therein, all of which terms and provisions the holder of this
certificate consents to by acceptance hereof. Copies of the Warrant Agreement and Rights Agreement are on file at the office of American
Stock Transfer & Trust Company, LLC at 6201 15th Avenue, Brooklyn, New York, NY 11219, and are available to any Warrant Holder and
Rights Holder, on written request and without cost.

 

This certificate is not valid unless countersigned
by the Transfer Agent and Registrar of the Company.

 

Witness the facsimile seal of the Company and
the facsimile signatures of its duly authorized officers.

 

This Unit Certificate shall be governed and construed
in accordance with the internal laws of the State of New York, without regard to conflicts of laws principles thereof.

 

[Seal]

  

	By	 	 	 
	 	Chairman	 	Chief Financial Officer

 

     

     

    

 

AQUARIUS II ACQUISITION CORP. 

 

The Company will furnish without
charge to each shareholder who so requests, a statement of the powers, designations, preferences and relative, participating, optional
or other special rights of each class of shares or series thereof of the Company and the qualifications, limitations, or restrictions
of such preferences and/or rights.

 

The following abbreviations,
when used in the inscription on the face of this certificate, shall be construed as though they were written out in full according to
applicable laws or regulations:

 

	TEN COM –	as tenants in common	UNIF GIFT MIN ACT - _____ Custodian ______
	TEN ENT –	as tenants by the entireties	                                          (Cust)                      (Minor)
	JT TEN –	as joint tenants with right of survivorship	                             under Uniform Gifts to Minors
	 	and not as tenants in common	                             Act ______________
	 	 	                                              (State)

 

Additional Abbreviations may also be used though
not in the above list.

 

For value received, ___________________________
hereby sell(s), assign(s) and transfer(s) unto

 

	PLEASE INSERT SOCIAL SECURITY OR

 OTHER	 
	IDENTIFYING NUMBER OF

 ASSIGNEE(S)	 

 

	
     

     
	 

 

	 
	(PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS, INCLUDING ZIP CODE, OF ASSIGNEE(S))
	 
	 
	 
	 

 

	 	Units

 

	 
	represented by the within Certificate, and do hereby irrevocably constitute and appoint

 

	 	 Attorney

to transfer the said Units on the books of the within named Company
will full power of substitution in the premises.

 

Dated ________________

 

    2

     

    

 

	 	 
	 	Notice:	The signature to this assignment must correspond with the name as written upon the face of the certificate in every particular, without alteration or enlargement or any change whatever.

 

Signature(s) Guaranteed:

 

	 	 
	
    THE SIGNATURE(S) SHOULD BE GUARANTEED BY AN ELIGIBLE GUARANTOR INSTITUTION

    (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS
    WITH

    MEMBERSHIP IN AN APPROVED SIGNATURE GUARANTEE MEDALLION PROGRAM,

    PURSUANT TO S.E.C. RULE 17Ad-15).
	 

 

The holder of this certificate shall be entitled
to receive funds with respect to the underlying ordinary shares from the trust fund only in the event of the Company’s liquidation
upon failure to consummate a business combination or if the holder seeks to convert his or her respective ordinary shares underlying the
unit upon consummation of such business combination or in connection with certain amendments to the Company’s Amended and Restated
Memorandum and Articles of Association. In no other circumstances shall the holder have any right or interest of any kind in or to the
trust fund.

 

 

3Exhibit 4.3

 

SPECIMEN
WARRANT CERTIFICATE

 

	NUMBER	 	[    ]
    WARRANTS
	WA-	 	 

 

(THIS WARRANT WILL BE
VOID IF NOT EXERCISED PRIOR TO 5:00 P.M.

NEW YORK CITY TIME, FIVE
YEARS FROM THE CLOSING DATE OF THE COMPANY’S INITIAL

BUSINESS COMBINATION)

 

AQUARIUS II ACQUISITION
CORP.

 

CUSIP: G0441M 127

 

WARRANT

 

THIS
WARRANT CERTIFIES THAT, for value received                                         ,
or registered agents, is the registered holder of a whole Warrant or Warrants (the “Warrant”), expiring on a date which is
five (5) years from the completion of the Company’s initial business combination, to purchase one fully paid and non-assessable
ordinary share (the “Warrant Shares”), with a par value $0.0001 per share, of AQUARIUS II ACQUISITION CORP., a Cayman Islands
company (the “Company”), for each Warrant evidenced by this Warrant Certificate. This Warrant Certificate is subject to and
shall be interpreted under the terms and conditions of the Warrant Agreement (as defined below).

 

Each
whole Warrant is initially exercisable for one fully paid and non-assessable share of Warrant Share. No fractional shares will be issued
upon exercise of any Warrant. If, upon the exercise of Warrant, a holder would be entitled to receive a fractional interest in a share,
the Company will, upon exercise, round down to the nearest whole number of the number of shares of Warrant Share to be issued to the
holder. The number of shares of Warrant Share issuable upon exercise of the Warrants is subject to adjustment upon the occurrence of
certain events set forth in the Warrant Agreement.

 

The Warrant entitles the holder thereof to purchase from the Company,
from time to time, in whole or in part, commencing 30 days after the consummation of the Company’s initial business combination
and nine (9) months from date that the registration statement is declared effective, such number of Warrant Shares at the price of $11.50
per share (the “Warrant Price”), upon surrender of this Warrant Certificate and payment of the Warrant Price at the office
or agency of American Stock Transfer & Trust Company, LLC (the “Warrant Agent”), such payment to be made subject to the
conditions set forth herein and in the Warrant Agreement, dated [______], 202_, between the Company and the Warrant Agent (the “Warrant
Agreement”). In no event shall the registered holder(s) of this Warrant be entitled to receive a net-cash settlement in lieu of
physical settlement in Warrant Shares of the Company. The Warrant Agreement provides that, upon the occurrence of certain events, the
Warrant Price and the number of Warrant Shares purchasable hereunder, set forth on the face hereof, may be adjusted, subject to certain
conditions. The term Warrant Price as used in this Warrant Certificate refers to the price per full Warrant Share at which Warrant Shares
may be purchased at the time the Warrant is exercised.

 

This
Warrant will expire on the date first referenced above if it is not exercised prior to such date by the registered holder pursuant to
the terms of the Warrant Agreement or if it is not redeemed by the Company prior to such date.

 

Upon
any exercise of the Warrant for less than the total number of full Warrant Shares provided for herein, there shall be issued to the registered
holder(s) hereof or its assignee(s) a new Warrant Certificate covering the number of Warrant Shares for which the Warrant has not been
exercised.

 

Warrant
Certificates, when surrendered at the office or agency of the Warrant Agent by the registered holder(s) hereof in person or by attorney
duly authorized in writing, may be exchanged in the manner and subject to the limitations provided in the Warrant Agreement, but without
payment of any service charge, for another Warrant Certificate or Warrant Certificates of like tenor and evidencing in the aggregate
a like number of Warrants.

 

     

     

    

 

Upon
due presentment for registration of transfer of the Warrant Certificate at the office or agency of the Warrant Agent, a new Warrant Certificate
or Warrant Certificates of like tenor and evidencing in the aggregate a like number of Warrants shall be issued to the transferee(s)
in exchange for this Warrant Certificate, subject to the limitations provided in the Warrant Agreement, without charge except for any
applicable tax or other governmental charge.

 

The
Company and the Warrant Agent may deem and treat the registered holder(s) as the absolute owner(s) of this Warrant Certificate (notwithstanding
any notation of ownership or other writing hereon made by anyone) for the purpose of any exercise hereof, of any distribution to the
registered holder(s), and for all other purposes, and neither the Company nor the Warrant Agent shall be affected by any notice to the
contrary.

 

This
Warrant does not entitle the registered holder(s) to any of the rights of a shareholder of the Company.

 

After
the Warrant becomes exercisable and prior to its expiration date, the Company reserves the right to call the Warrant at any time, with
a notice of call in writing to the holder(s) of record of the Warrant, giving thirty (30) days’ written notice of such call if
the last reported sale price of the shares has been equal to or greater than $18.00 per share for any twenty (20) trading days within
a thirty (30) trading day period ending on the third (3rd) trading day prior to the date on which notice of such call is given, provided
that (i) a registration statement under the Securities Act of 1933, as amended (the “Act”) with respect to the ordinary shares
underlying the Warrants issuable upon exercise must be effective and a current prospectus must be available for use by the registered
holders hereof or (ii) the Warrants may be exercised on cashless basis as set forth in the Warrant Agreement and such cashless exercise
is exempt from registration under the Act. The call price is $0.01 per Warrant Share.

 

If
the foregoing conditions are satisfied and the Company calls the Warrant for redemption, each holder will then be entitled to exercise
his, her or its Warrant prior to the date scheduled for redemption; provided that the Company may require the Registered Holder who desires
to exercise the Warrant, to elect cashless exercise as set forth in the Warrant Agreement, and such Registered Holder must exercise the
Warrants on a cashless basis if the Company so requires. Any Warrant either not exercised or tendered back to the Company by the end
of the date specified in the notice of call shall be canceled on the books of the Company and have no further value except for the $0.01
call price.

 

COUNTERSIGNED:

 

AMERICAN STOCK TRANSFER & TRUST COMPANY,
LLC

 

WARRANT AGENT

 

	BY:	                                                	 
	AUTHORIZED OFFICER

 

	DATED: 	          	 
	 
	(Signature)
	CHIEF EXECUTIVE OFFICER

 

(Seal)

 

(Signature)

 

SECRETARY

 

[REVERSE OF CERTIFICATE]

 

    2

     

    

 

SUBSCRIPTION FORM

 

To Be Executed by the
Registered Holder(s) in Order to Exercise Warrants

 

The undersigned hereby
irrevocably elects to exercise the right, represented by this Warrant Certificate, to receive ordinary shares in accordance with the
terms of this Warrant Certificate and pursuant to the method selected below. Capitalized terms used herein and not otherwise defined
have the respective meanings set forth in the Warrant Certificate. PLEASE CHECK ONE METHOD OF PAYMENT:

 

	 	 	 	 
	 	 

	 	a “Cash Exercise” with respect
    to                  Warrant Shares; and/or
	 	 
	 	 

	 	a “Cashless Exercise” with respect to                 
    Warrant Shares because on

     

    the date of this exercise, there is no effective registration
    statement

     

    registering the Warrant Shares, or the prospectus contained therein
    is not available for the resale of the Warrant Shares, in which event the Company shall deliver to the registered holder(s)                 
    ordinary shares pursuant to Section 3.3.2 of the Warrant Agreement.

    

 

The undersigned requests
that a certificate for such shares be registered in the name(s) of:

 

	 
	 

	(PLEASE TYPE OR PRINT NAME(S) AND ADDRESS)
	 
	 

	 
	 

	 
	 

	(SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER(S))

 

	 	 	 
	and be delivered to	 	 

	 	 	(PLEASE PRINT OR TYPE NAME(S) AND ADDRESS) and, if such number of Warrants shall not
be all the Warrants evidenced by this Warrant Certificate, that a new Warrant Certificate for the balance of such Warrants be registered
in the name of, and delivered to, the registered holder(s) at the address(es) stated below:

 

Dated:

 

	 	 
	(SIGNATURE(S))	 
	 	 
	 	 
	(ADDRESS(ES))	 
	 	 
	 	 
	 	 
	 	 
	 	 
	(TAX IDENTIFICATION NUMBER(S))	 

 

    3

     

    

 

ASSIGNMENT

 

To Be Executed by the
Registered Holder in Order to Assign Warrants

 

For Value Received,                                     
hereby sell(s), assign(s), and transfer(s) unto

 

	 	 
	 

	 
	(PLEASE TYPE OR PRINT NAME(S) AND ADDRESS(ES))	 
	 	 
	 

	 
	 	 
	 

	 
	 	 
	 

	 

(SOCIAL SECURITY OR TAX IDENTIFICATION NUMBER(S))

 

	 	 	 	 	 
	and to be delivered to	 	 

	 	 
	 	 	(PLEASE PRINT OR TYPE NAME(S) AND ADDRESS(ES))	 	 
	 	 
	 

	 	 
	 	 
	 

	 	 

(SOCIAL SECURITY OR TAX IDENTIFICATION
NUMBER(S)) of the Warrants represented by this Warrant Certificate, and hereby irrevocably constitute and appoint
                     Attorney to
transfer this Warrant Certificate on the books of the Company, with full power of substitution in the premises.

 

Dated:

 

	 	 
	(SIGNATURE(S))	 

 

NOTICE: THE SIGNATURE(S) TO THIS ASSIGNMENT
MUST CORRESPOND WITH THE NAME AS WRITTEN UPON THE FACE OF THE CERTIFICATE IN EVERY PARTICULAR, WITHOUT ALTERATION OR ENLARGEMENT OR ANY
CHANGE WHATEVER.

 

Signature(s) Guaranteed:

 

	By	 	 

 

THE SIGNATURE(S) MUST BE GUARANTEED BY AN
ELIGIBLE GUARANTOR INSTITUTION (BANKS, STOCKBROKERS, SAVINGS AND LOAN ASSOCIATIONS AND CREDIT UNIONS WITH MEMBERSHIP IN AN APPROVED SIGNATURE
GUARANTEE MEDALLION PROGRAM, PURSUANT TO S.E.C. RULE 17Ad-15).

 

 

4

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