FCC ID: 2BB4OMU-08 MU-08 Magic Crystal Mouse

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: 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:

-- Reorient or relocate the receiving antenna.

-- Increase the separation between the equipment and receiver.

-- 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. The device has been evaluated to meet general RF exposure requirement. The device can be u sed in portable exposure condition without restriction

Shenzhen Beiyang Technology Co., Ltd.

(July 20, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature:

Name: xiao jian Title: General MANAGER

(Shenzhen Beiyang Technology Co., Ltd.)

(July 20, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BB4OMU-08)

[Shenzhen Beiyang Technology Co., Ltd.] (the applicant) 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. Sincerely,

(Applicant signature)

(Applicant printed name) xiao jian

(Shenzhen Beiyang Technology Co., Ltd.)

(July 20, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BB4OMU-08)

[Shenzhen Beiyang Technology Co., Ltd.] (the applicant) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing covered equipment. Sincerely,

(Applicant signature)

(Applicant printed name) xiao jian

Shenzhen Beiyang Technology Co., Ltd.

(July 20, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (MU-08 Magic Crystal Mouse / MU-08, MU-08Pro, MU-09, MU-09Pro, MU-10, MU-10Pro, MU-11 MU-11Pro, MU-12, MU-12Pro / FCC ID: 2BB4OMU-08) To Whom It May Concern:

This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits ID Label/Location Attestation Statement External Photos Block Diagram Schematics Test Report Test Setup Photos Users Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) SDR Software / Security Info Long-Term Confidentiality No No No No No NOTE 1 NOTE 1 No No Short-Term Confidentiality NOTE 2 No No No No No No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature:

Name: xiao jian Title: General MANAGER

Shenzhen Beiyang Technology Co., Ltd. Model Difference DataJuly 20, 2023 Product description: MU-08 Magic Crystal Mouse Model name: MU-08, MU-08Pro, MU-09, MU-09Pro, MU-10, MU-10Pro, MU-11 MU-11Pro, MU-12, MU-12Pro Trade Name: N/A FCC ID: 2BB4OMU-08 All the model are the same circuit and RF module, except model names . Regards Sincerely Clients signature :

Clients name / title : xiao jianGeneral MANAGER Contact information / addressFloor 4-01, Weiyulongbuji Factory Building, No. 2016, Xuegang Road, Gangtou Community, Bantian Street, Longgang District, Shenzhen

Attestation Statements

(July 21, 2023) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: 2BB4OMU-08 )

(Shenzhen Beiyang Technology Co., Ltd.), the undersigned, hereby authorize (SOUTH BAY INNOVATION LLC) to act as our designated U.S. agent for service of process,

(Shenzhen Beiyang Technology Co., Ltd.) accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment.

(SOUTH BAY INNOVATION LLC) accepts the responsibility to act as designated U.S. agent for service of process, provides an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-

related proceeding involving the equipment. Applicant Information:

Company name: Shenzhen Beiyang Technology Co., Ltd. Contact Name: xiao jian Address: Floor 4-01, Weiyulongbuji Factory Building, No. 2016, Xuegang Road, Gangtou Community, Bantian Street, Longgang District, Shenzhen Telephone No: 13538214502 Email: beryangtech2023@163.com U.S. Agent Information:

Company Name: SOUTH BAY INNOVATION LLC Address: 23545 CRENSHAW BLVD STE 106 Torrance, CA 90505 Contact Name: Yueting Zhu Telephone No: 4243769142 Email: southbayinnovation@southbayinnovation.com FRN: 0033401811 Applicant Signature: MANGA Agent Signature: Wu QI Applicant printed name: xiao jian Agent printed name: Yueting Zhu