FCC ID: 2A9MI-Q18 HELMET WIRELESS EARPHONE

FCC Statement:

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. 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 guarant ee 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. Caution: Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environm ent. This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

Shenzhen Yixi Technology Co., LTD Agent Authorization Letter 2023-12-12 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern:

We, the undersigned, hereby authorize Shenzhen Most Technology Service 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, Name:

Position:

Company Name:

Address:

Tel / Fax E-Mail:

Qisong Wang Manager Shenzhen Yixi Technology Co., LTD Second Floor, Building B, Area A, Longquan Science Park, Dalang Huaxing Road, Longhua District, Shenzhen City,China

+86-13423817655 373899330@qq.com

Shenzhen Yixi Technology Co., LTD 12-12-2023 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: 2A9MI-Q18)

[ Shenzhen Yixi 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, Qisong Wang Shenzhen Yixi Technology Co., LTD 12-12-2023 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: 2A9MI-Q18)

[ Shenzhen Yixi 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, Qisong Wang

Shenzhen Yixi Technology Co., LTD Long Term Confidentiality Request Letter 2023.12.12 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR (FCC ID:2A9MI-Q18) 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

required to be submitted with this application be permanently withheld from public review. e.g. Block diagram e.g. SCH e.g. Operational Description The above documents are company proprietary information that could never get into the possession of your competition. Please contact me if there is any information you may need. Sincerely, Name:

Position:

Company Name:

Address:

Tel / Fax E-Mail:

Qisong Wang Manager Shenzhen Yixi Technology Co., LTD Second Floor, Building B, Area A, Longquan Science Park, Dalang Huaxing Road, Longhua District, Shenzhen City,China

+86-13423817655 373899330@qq.com

Model difference letter 2023.12.12 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA This is a new Application from Shenzhen Yixi Technology Co., LTD Model No.:

Q18A18SQ18 PlusQ18 motorNX-Q18 Only the model Q18 was tested, Their electrical circuit design, layout, components used and internal wiring are identical,Only the model name are different. Thank you for your cooperation!

Yours sincerely, Signatory:

Sincerely, Signature:

Name: Qisong Wang Title: Manager

PLEASE PRINT ON COMPANY LETTERHEAD Section 2.911(d)(7) USA Agent for Service of Process Company name: Shenzhen Yixi Technology Co., LTD Address:Second Floor, Building B, Area A, Longquan Science Park, Dalang Huaxing Road, Longhua District, Shenzhen City FRN:0033155482 Product Name: HELMET WIRELESS EARPHONE FCC ID: 2A9MI-Q18 Model(s): Q18 2.911(d)(7) USA Designated Agent for Service of Process We, [ Shenzhen Yixi Technology Co., LTD ] (the applicant) designate [Agent located in the United States] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent: We Acknowledge our consent 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 of the designated agent and acknowledge our acceptance of our obligation 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. Agent obligation: We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address 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. USA Agent Applicant Company name:TianHeng Consulting,LLC Company name: Shenzhen Yixi Technology Address:392 Andover Street,Wilmington,MA Co., LTD 01887,United States FRN:0033401258 Contact Name:Hualing Dong Telephone No:(617)997-4010 Address:Second Floor, Building B, Area A, Longquan Science Park, Dalang Huaxing Road, Longhua District, Shenzhen City Contact Name: Qisong.Wang Email:tianhengconsulting@gmail.com Telephone No: 13423817655 Signature:Hualing Dong Title:President Date:2023-11-8 Email:373899330@qq.com Signature:Qisong.Wang Title: Purchasing Manager Date:2023-11-8 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-th e-communications-supply-chain-through-the 2.911 (d)(7)USA Agent v1.2