FCC ID: 2BB2Y-W66 Wink Series TWS Earphones

Guangzhou Xinchen Intelligent Technology Co., Ltd

(October 31, 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: Mo yinan Title: Manager

(Guangzhou Xinchen Intelligent Technology Co., Ltd)

(October 31, 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: 2BB2Y-W66)

[Guangzhou Xinchen Intelligent 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) Mo yinan

(Guangzhou Xinchen Intelligent Technology Co., Ltd)

(October 31, 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: 2BB2Y-W66)

[Guangzhou Xinchen Intelligent 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) Mo yinan

Guangzhou Xinchen Intelligent Technology Co., Ltd

(October 31, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Wink Series TWS Earphones / W66 /

FCC ID: 2BB2Y-W66) 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: Mo yinan Title: Manager

Attestation Statements

(November 1, 2023) TO: Federal Communications Commi:

Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (FCC ID: 2BB2Y-W66 )

(Guangzhou Xinchen Intelligent Technology Co., Ltd), the undersigned, hereby authorize (SOUTH BAY INNOVATION LLC) to act as our designated U.S. agent for ser of process, (Guangzhou Xinchen Intelligent Technology Co., Ltd) accepts to mai 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 responsil to act as designated U.S. an agent for no less than one year after the Applicant Information:

Company name: Guangzhou Xinchen Intelligent Technology Co., Ltd Contact Name: Moyinan Address: Room 499, Room A161, No. 89 Yanling Road, Tianhe District, Guangzhou, Chin Telephone No: 13538214502 Email: Brandon1997 @toxin.cn FRN: 0033994245 U.S. Agent Information:

Company Name: SOUTH BAY INNOVATION LLC. Address: 23545 CRENSHAW BLVD STE 106 Torrance, CA90505 Contact Name: Yueting Zhu Telephone No: 4243769142 Email: southbayinnovation@ southbayinnovation.com FRN: 0033401811 Mo ytnan Yor Applicant Signature: Agent Signature:

Applicant printed name: Mo yinan Agent printed name: Yueting Zhu