FCC ID: 2BNK8-B2 Guitar Amplifier

User Manual Name:Guitar Amplifier Model:B2 Wireless version:5.4 Max output power:10W Rated input:5V 1A Charging time:about 3h Work time:about 10h Size:148*104*66mm Lithium battery:3.7V/1500mA Operating Frequency Band :20Hz20kHz Maximum Radio-Frequency Power:+6 dBm 5.Tone konb:This knob controls the tone 6.Gain knob:This knob adjusts the gain output 7.CLEAN/OD:The button to switch the overdrive and the clean channel. 8.Guitar input jack:6.35mm Guitar input jack 9.TYPE-C charging port 10.Charging indicator :The indicator light will be red when you charge the lamp,when the battery is fully charged ,the indicator light will turn green This device may not cause harmful interference, and (2) this device must accept any Power supply this product has a built-in lithium battery.when the product is not used for a long period,please charge the product every six months in order to extend the built in battery's cycling life.in order to make fill use of the performance of the lithium battry,please make sure that the external temperature is between-10to 60. FCC Warning This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:

(1) interference received, including interference that may cause undesired operation. NOTE 1: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

-Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

-Consult the dealer or an experienced radio/TV technician for help. Reorient or relocate the receiving antenna. Increase the separation between the equipment and receiver. FUNCTION 1.Power:ong press for 2 seconds to turn on/off,Click to turn on Wireless function after booting up,Click again to turn off Wireless function,Mobile wireless connection name: B2,All operations have voice prompts 2.Blue indicator light for power on/off 3. 3.5mm headphone jack 4.Volume knob:This knob only adjusts the volume of guitar input sound NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Report No: SSP26080606-1 FCC ID: 2BNK8-B2 Annex D. Label and Information FCC Label Sample FCC Labe Size: 35mm *20mm FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location Annex of Test Report

Shenzhen Bairui Plastic Electronic Technology Co., LTD Date: September 15, 2026 Product Model Number: B2 FCC ID: 2BNK8-B2 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:

Testing Approval applications and procedures We declare that QAI Laboratories Ltd. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. Signature By: Lemon feng Title: Manager Tel.:+86-18211307641 Email: [email protected] On behalf of: Shenzhen Bairui Plastic Electronic Technology Co., LTD

Shenzhen Bairui Plastic Electronic Technology Co., LTD U.S. Agent Letter of Attestation To: Federal Communications Commission Date: September 15, 2026 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Attestation Statement Part 2.911(d)(7) filing FCC ID: 2BNK8-B2 Shenzhen Bairui Plastic Electronic Technology Co., LTD (the applicant) certifies that, as of the date of the filing of the application, GLOBAL PRODUCT PROMOTION (the agent) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts to maintain an agent for service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. GLOBAL PRODUCT PROMOTION ("the agent) understand it is the agent's obligation to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address. Designated U.S. Agent Company Name:

GLOBAL PRODUCT PROMOTION COMMERCE CO., LTD. FRN: 0037700671 Address:

350 NORTHERN BLVD STE 324-1331, ALBANY, NY, 12204, United States Contact Person: David Kim Tel: (213)849-1481 Signature:

Email: [email protected] Applicant Company Name: Shenzhen Bairui Plastic Electronic Technology Co., LTD FRN: 0036555571 Address:

103-1, Building A3b, Huaxia Garden Technology Indu, strial Estate, Fuping Road, Pingdong Community, Pingdi Street, Longgang District, Shenzhen, China, 518117 Contact Person: Lemon feng& Manager Signature:

Tel: +86-18211307641 Email: [email protected]

Shenzhen Bairui Plastic Electronic Technology Co., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 09-15-2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BNK8-B2

[Shenzhen Bairui Plastic Electronic Technology Co., LTD] certifies that the equipment for which authorization is sought is not covered equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules.

[Shenzhen Bairui Plastic Electronic Technology Co., LTD] certifies that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-

886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely,

(Applicant signature)

(Applicant printed name) Lemon feng Rev 1/26/2023 Shenzhen Bairui Plastic Electronic Technology Co., LTD Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 09-04-2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BW54-EK1084

[Shenzhen Bairui Plastic Electronic Technology Co., LTD] ce8rtifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing covered equipment. Sincerely,

(Applicant signature)

(Applicant printed name) Lemon feng Rev 1/26/2023

Shenzhen Bairui Plastic Electronic Technology Co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2BNK8-B2 To Whom It May Concern, Date: September 17, 2026 Pursuant to the provisions of the Commissions rules Title 47 Sections 0.457 and 0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure Software Security Requirements for UNII devices It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature By: Lemon feng Title: Manager