FCC ID: 2AHFT419 Smart Watch

C5266091_X10_Ed.1 Shenzhen DO Intelligent Technology Co., Ltd. Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Subject: Request for Confidentiality FCC ID: 2AHFT419 To Whom It May Concern, Date: 11/10/2021 Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules

(47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. 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 Short-Term Confidentiality No No No No No No No No 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. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature:

Name: Dajun Wu Date: 11/10/2021 Title:

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C5266091_X6_Ed.1 Shenzhen DO Intelligent Technology Co., Ltd. Declaration of Product Modifications Date: Nov. 09, 2021 This is to request a Class II permissive change for FCC ID: 2AHFT419 originally granted on 08/03/2021. The major change filed under this application is:

This changes the information of the customer added a solution for the sample's heart rate detection board. In the production process, both the new board and the old board will be used. Sincerely,

(Signature) Name Surname: Dajun Wu Position:

Company: Shenzhen DO Intelligent Technology Co., Ltd. Postal Address: 11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District, Shenzhen, China 1/1

C5266091_X8_Ed.1 Letter of Authorization Shenzhen DO Intelligent Technology Co., Ltd. Company: Shenzhen DO Intelligent Technology Co., Ltd. Address: 11th Floor, 3# Building, Guole Tech Park, Lirong Road, Dalang, Longhua District, Shenzhen, China Product Name: Smart Watch Model Number: ID207 FCC Identifier: 2AHFT419 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Dajun Wu Date: 11/10/2021 Title:

Signature of applicant:

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