2ATQU-Q10Q10 TWbluetooth headset

Declaration on model difference We the undersigned hereby confirm that any of our production units bearing the following model numbers are identical in circuitry and electrical, mechanical and physical construction; The difference lies in the market and model of export. FCC ID: 2ATQU-Q10 Production name Trade name Model no. Q10 TWbluetooth headset N/A Q10,G10,G20,G40 Confirmed by Shenzhen Mengda Network Technology Co., Ltd Signature: Date: 2022/08/04 Name: Dongwen Zhong Company: Shenzhen Mengda Network Technology Co., Ltd

Shenzhen Mengda Network Technology Co., Ltd Authorization Company: Shenzhen Mengda Network Technology Co., Ltd Address: Room 403, No. 1 Yunchuang Building, Yunchuang Cross-Border E- Commerce Park, Banxuegang Road, Bantian Street, Longgang District, Shenzhen 518129, China Product Name: Q10 TWbluetooth headset Model Number(s ): Q10,G10,G20,G40 We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: 2022/08/04 Name: Dongwen Zhong Company: Shenzhen Mengda Network Technology Co., Ltd

Shenzhen Mengda Network Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 2022/08/04 Subject; Request for Confidentiality FCC ID: 2ATQU-Q10 To Whom It May Concern, Pursuant to the provisions of the Commission’s 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 Operational Description In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. 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: Name: Dongwen Zhong Company: Shenzhen Mengda Network Technology Co., Ltd

EUT EXTERNAL PHOTOGRAPHS EUT View 1 EUT View 2 EUT View 3 EUT View 4 EUT View 5 EUT View 6 EUT View 7 EUT View 8 EUT View 9 EUT View 10 EUT View 11 EUT View 12 ----------------The end----------------

FCC ID: 2ATQU-Q10

EUT INTERNAL PHOTOGRAPHS EUT Housing and Board View 1 EUT Housing and Board View 2 EUT Housing and Board View 3 EUT Housing and Board View 4 EUT Housing and Board View 5 EUT Housing and Board View 6 （Left ） EUT Housing and Board View 7（Left ） EUT Housing and Board View 8 （Right） Antenna EUT Housing and Board View 9 （Right） EUT Housing and Board View 10 EUT Housing and Board View 11 EUT Housing and Board View 12 EUT Housing and Board View 13 ----------------The end----------------

FCC ID: 2ATQU-Q10 RF exposure evaluation According to§15.247(i), §1.1307 (b) and KDB447498, systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the commission’s guidance. The SAR-based exemption formula of §1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). F is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1). When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. We use 5mm as separation distance to calculate Portable device Antenna Gain: 3.0 dBi Conducted Transmit Power Max: -0.55 dBm (0.88mW) EIRP=-0.55dBm +3.0 dBi=2.45 dBm ERP= EIRP-2.15dB= 0.3 dBm The maximun output power specified is: 0.3 dBm (1.07 mW) The SAR Exclusion Threshold Level: 푃푃 th (mW) = ERP 20cm * (푑푑/20cm) 푥푥 (X= ) = 2.72 mW Since the source-based time-averaging conducted output power is well below the SAR low threshold level, so the EUT is considered to comply with SAR requirement without testing.

No.：BCTC/RF-EMC-007 Page: 1 of 64 Edition：A.4 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2208444251E Applicant: Shenzhen Mengda Network Technology Co., Ltd Product Name: Q10 TWbluetooth headset Model/Type reference: Q10 Tested Date: 2022-07-29 to 2022-08-02 Issued Date: 2022-08-12 Report No.: BCTC2208444251E No.：BCTC/RF-EMC-007 Page: 2 of 64 Edition：A.4 FCC ID: 2ATQU-Q10 The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Q10 TWbluetooth headset Trademark: N/A Model/Type Reference: Q10,G10,G20,G40 Prepared For: Shenzhen Mengda Network Technology Co., Ltd Address: Room 403, No. 1 Yunchuang Building, Yunchuang Cross-Border E-Commerce Park, Banxuegang Road, Bantian Street, Longgang District, Shenzhen 518129, China Manufacturer: Shenzhen Sande Dacom Electronics Co.,Ltd. Address: Building I,No.10.East of ShangXue Science&Technology Industrial Park. Bantian.LongGang.Shenzhen.China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Tangwei, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2022-07-28 Sample tested Date: 2022-07-29 to 2022-08-02 Report No.: BCTC2208444251E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Brave Zeng/ Project Handler Zero Zhou/Reviewer Report No.: BCTC2208444251E No.：BCTC/RF-EMC-007 Page: 3 of 64 Edition：A.4 Table of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information and Test Setup ...................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 8 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List .......................................................................................................... 9 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 10 5. Test Facility and Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Radiated emissions ............................................................................................. 13 6.1 Block Diagram Of Test Setup .............................................................................. 13 6.2 Limit .................................................................................................................... 14 6.3 Test procedure .................................................................................................... 15 6.4 EUT operating Conditions ................................................................................... 16 6.5 Test Result .......................................................................................................... 17 7. Radiated Band Emission Measurement and Restricted Bands Of Operation ...... 21 7.1 Block Diagram Of Test Setup .............................................................................. 21 7.2 Limit .................................................................................................................... 21 7.3 Test procedure .................................................................................................... 22 7.4 EUT operating Conditions ................................................................................... 22 7.5 Test Result .......................................................................................................... 23 8. Spurious RF Conducted Emissions ..................................................................... 24 8.1 Block Diagram Of Test Setup .............................................................................. 24 8.2 Limit .................................................................................................................... 24 8.3 Test procedure .................................................................................................... 24 8.4 Test Result .......................................................................................................... 25 9. 20 dB Bandwidth ................................................................................................. 39 9.1 Block Diagram Of Test Setup .............................................................................. 39 9.2 Limit .................................................................................................................... 39 9.3 Test procedure .................................................................................................... 39 9.4 Test Result .......................................................................................................... 39 10. Maxim…

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TEST SETUP PHOTOGRAPHS Photos of Radiation Emission Measurement Conducted Emission Measurement Spurious Emission Test Setup (Below 1GHz) Spurious Emission Test Setup (Above 1GHz) ----------------The end----------------