2AUIUWNCE1Wyze Buds Pro

Wyze Labs, Inc. Date: 2021-05-11 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2AUIUWNCE1 To Whom It May Concern: This letter is to statement that WNCE1WHT, WNCE1BLK / Wyze Buds Pro. has been tested according to FCC Part 15B by Waltek Testing Group Co., Ltd. (Test Report No: WTD21D01004110E). And the SDOC file, meetting the requirements of the FCC regulations, would been provided when the device is sold by the responsible party in US. The service will not be sold until the SDOC is provided. If the sale does not have an SDOC, all responsibility is the responsibility of the applicant. Sincerely, Steve Skeoch Head of Hardware Wyze Labs, Inc.

Wyze Labs, Inc. Date: May 13, 2021 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2AUIUWNCE1 Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name Long-term confidentiality: Schematics Block Diagram Operational Description Schematics.pdf Block Diagram.pdf Operational Description.pdf Short-term confidentiality: User’s Manual External Photos Internal Photos Setup photos User’s Manual.pdf External Photos.pdf Internal Photos.pdf Setup photos.pdf Short-term confidentiality days: 180 days. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Steve Skeoch Head of Hardware Wyze Labs, Inc.

Wyze Labs, Inc. FCC ID: 2AUIUWNCE1 POWER OF ATTORNEY Date: May 11, 2021 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: We, the undersigned, hereby authorize Waltek Testing Group Co., Ltd. (Philo Zhong) on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Waltek Testing Group Co., Ltd. (Philo Zhong) on our behalf shall have the same effect as acts of our own. This authorization expires on May 10, 2022. This is to advise that we are in full compliance with the Anti-Drug Abuse Act. We, Wyze Labs, Inc. are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Sincerely, Steve Skeoch Head of Hardware Wyze Labs, Inc.

Wyze Labs, Inc. FCC ID: 2AUIUWNCE1 Date: 5/13/2021 Subject: authorization for adding family models To whom it May concern, Statement We would like to confirm the product Wyze Buds Pro with models WNCE1WHT, WNCE1BLK are same in all respects. Only the model names are different for different market requirement. Yours sincerely, Steve Skeoch Head of Hardware Wyze Labs, Inc.

Appendix-WNCE1WHT-Photos Page 6 of 34 2. Photographs –Constructional Details 2.1 EUT – External View Model-WNCE1WHT FCC ID: 2AUIUWNCE1 Charging case Appendix-WNCE1WHT-Photos Page 7 of 34 Appendix-WNCE1WHT-Photos Page 8 of 34 Appendix-WNCE1WHT-Photos Page 9 of 34 Appendix-WNCE1WHT-Photos Page 10 of 34 Left Earbud Appendix-WNCE1WHT-Photos Page 11 of 34 Appendix-WNCE1WHT-Photos Page 12 of 34 Right Earbud Appendix-WNCE1WHT-Photos Page 13 of 34 Appendix-WNCE1WHT-Photos Page 14 of 34

WNCE1WHT-Label and Label Location Label sample-Case Location Φ= MODEL: WNCE1WHT INPUT: 5V1A NAME: Wyze Buds Pro Wyze Labs, Inc. MADE IN CHINA 5808 Lake Washington Blvd NE Ste 300 Kirkland WA 98033 WNCE1WHT-Label and Label Location Label sample-Earbud Location Left earbud Right earbud size: 9,94mm*1.61mm

Appendix-WNCE1WHT-Photos Page 15 of 34 2.2 EUT – Internal View Model-WNCE1WHT FCC ID: 2AUIUWNCE1 Charging case Appendix-WNCE1WHT-Photos Page 16 of 34 Appendix-WNCE1WHT-Photos Page 17 of 34 The PCB that may be used in the later stage will be the same except for the color. Appendix-WNCE1WHT-Photos Page 18 of 34 The PCB that may be used in the later stage will be the same except for the color. Appendix-WNCE1WHT-Photos Page 19 of 34 Appendix-WNCE1WHT-Photos Page 20 of 34 Appendix-WNCE1WHT-Photos Page 21 of 34 Appendix-WNCE1WHT-Photos Page 22 of 34 The PCB that may be used in the later stage will be the same except for the color. The PCB that may be used in the later stage will be the same except for the color. Appendix-WNCE1WHT-Photos Page 23 of 34 Left Earbud Appendix-WNCE1WHT-Photos Page 24 of 34 Appendix-WNCE1WHT-Photos Page 25 of 34 Appendix-WNCE1WHT-Photos Page 26 of 34 ANT. Appendix-WNCE1WHT-Photos Page 27 of 34 Appendix-WNCE1WHT-Photos Page 28 of 34 The PCB that may be used in the later stage will be the same except for the color. The PCB that may be used in the later stage will be the same except for the color. Appendix-WNCE1WHT-Photos Page 29 of 34 Right earbud Appendix-WNCE1WHT-Photos Page 30 of 34 Appendix-WNCE1WHT-Photos Page 31 of 34 Appendix-WNCE1WHT-Photos Page 32 of 34 Ant. Appendix-WNCE1WHT-Photos Page 33 of 34 Appendix-WNCE1WHT-Photos Page 34 of 34 The PCB that may be used in the later stage will be the same except for the color. The PCB that may be used in the later stage will be the same except for the color. ======End======

Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 55 SAR TEST REPORT Reference No. ................... : WTD21D01004108W002 V1 FCC ID ................................ : 2AUIUWNCE1 Applicant ........................... : Wyze Labs, Inc. Address ............................. : 5808 Lake Washington Blvd NE Ste 300 Kirkland WA 98033 Manufacturer .................... : Shenzhen 3nod Digital Technology Co., Ltd Address ............................. : 401 Zone 101A, Workshop 15, Zhongfu Road, Tangxiayong Community, Yanluo Street, Baoan District, Shenzhen City, Guangdong Province, P.R.C. Product .............................. : Wyze Buds Pro Brand Name ...................... : Model(s). ............................ : WNCE1WHT, WNCE1BLK Standards .......................... : FCC 47 CFR Part2(2.1093) ANSI/IEEE C95.1-2006 IEEE 1528-2013 & Published RF Exposure KDB Procedures Date of Receipt sample .... : 2021-01-15 Date of Test ....................... : 2021-01-16 to 2021-02-04 Date of Issue ..................... : 2021-05-19 Test Result ........................ : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: Estel Qian / Project Engineer Daniel Liu / Designated Reviewer Reference No.: WTD21D01004108W002 V1 Page 2 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 CONTENTS ............................................................................................................................................... 2 3 REVISION HISTORY ................................................................................................................................. 3 4 GENERAL INFORMATION ....................................................................................................................... 4 4.1 G ENERAL DESCRIPTION OF E.U.T. ....................................................................................................... 4 4.2 D ETAILS OF E.U.T. ............................................................................................................................. 4 5 EQUIPMENT USED DURING TEST ......................................................................................................... 5 5.1 E QUIPMENT LIST ................................................................................................................................. 5 5.2 T EST EQUIPMENT CALIBRATION ........................................................................................................... 5 6 SAR INTRODUCTION............................................................................................................................... 6 6.1 I NTRODUCTION .................................................................................................................................... 6 6.2 SAR DEFINITION ................................................................................................................................. 6 7 SAR MEASUREMENT SETUP ................................................................................................................. 7 8 EXPOSURE LIMIT .................................................................................................................................. 16 9 SYSTEM AND LIQUID VALIDATION ..................................................................................................... 17 9.1 S YSTEM VALIDATION .......................................................................................................................... 17 9.2 LIQUID VALIDATION ............................................................................................................................. 19 10 TYPE A MEASUREMENT UNCERTAINTY............................................................................................ 22 11 OUTPUT POWER VERIFICATION ......................................................................................................... 25 12 EXPOSURE CONDITIONS CONSIDERATION ...................................................................................... 27 13 SAR TEST RESULTS ............................................................................................................................. 29 14 SAR MEASUREMENT REFERENCE .................................................................................................... 31 M AXIMUM SAR MEASUREMENT PLOTS ........................................................................................................ 32 15 CALIBRATION REPORTS-PROBE AND DIPOLE ................................................................................ 34 16 SAR SYSTEM PHOTOS ......................................................................................................................... 54 17 PHOTOGRAPHS OF TEST SETUP AND EUT. ..................................................................................... 55 Reference No.: WTD21D01004108W002 V1 Page 3 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 3 Revision History Test report No. Date of Receipt sample Date of Test Date of Issue Purpose Comment Approved WTD21D01004108 W002 2021-01-15 2021-02-032021-02-05Original - Replaced WTD21D01004108 W002 V1 2021-01-15 2021-02-032021-05-19Version 1 Updated Valid Reference No.: WTD21D01004108W002 V1 Page 4 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 4 General Information 4…

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Reference No.: WTD21D01004108W002 Page 43 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 44 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 45 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 46 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 47 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 48 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 49 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 50 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 51 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 52 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 53 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Reference No.: WTD21D01004108W002 Page 54 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 16 SAR System Photos Liquid depth ≥ 15cm Reference No.: WTD21D01004108W002 Page 55 of 55 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 17 Photographs of test setup and EUT. Note: Please refer to appendix: Appendix-WNCE1WHT-Photos. ======End of report======

Waltek Testing Group Co., Ltd. http://www.waltek.com.cn Page 1 of 75 TEST REPORT Reference No. .................... : WTD21D01004108W001 V1 FCC ID ................................ : 2AUIUWNCE1 Applicant ........................... : Wyze Labs, Inc. Address ............................. : 5808 Lake Washington Blvd NE Ste 300 Kirkland WA 98033 Manufacturer .................... : Shenzhen 3nod Digital Technolog y Co., Ltd Addr ess ............................. : 401 Zone 101A, Workshop 15, Zhongfu Road, Tang xiayong Comm unity, Yanluo Street, Baoan District, Shenzhen City, Guangdong Province, P.R.C. Product .............................. : Wyze Buds Pro Brand Name ....................... : Model(s). ............................ : WNCE1WHT, WNCE1BLK Standards .......................... : FCC CFR47 Part 15 Section 15.247 Date of Receipt sample .... : 2021-01-15 Date of Test ....................... : 2021-01-16 to 2021-02-04 Date of Issue ..................... : 2021-05-19 Test Result ........................ : Pass Remarks: The results shown in this test report refer only to the sample(s) tested, this test report cannot be reproduced, except in full, without prior written permission of the company. The report would be invalid without specific stamp of test institute and the signatures of compiler and approver. Prepared By: Waltek Testing Group Co., Ltd. Address: No. 77, Houjie Section, Guantai Road, Houjie Town, Dongguan City, Guangdong, China Tel: +86-769-2267 6998 Fax: +86-769-2267 6828 Compiled by: Approved by: Estel Qian / Project Engineer Daniel Liu / Designated Reviewer Reference No.: WTD21D01004108W001 V1 Page 2 of 75 Waltek Testing Group Co., Ltd. http://www.waltek.com.cn 2 Contents Page 1 COVER PAGE ........................................................................................................................................... 1 2 CONTENTS ............................................................................................................................................................ 2 3 REVISION HISTORY ............................................................................................................................................ 4 4 GENERAL INFORMATION .................................................................................................................................. 5 4.1 GENERAL DESCRIPTION OF E.U.T ................................................................................................................. 5 4.2 DETAILS OF E.U.T ........................................................................................................................................... 6 4.3 CHANNEL LIST ................................................................................................................................................. 6 4.4 TEST MODE ..................................................................................................................................................... 6 5 EQUIPMENT USED DURING TEST .................................................................................................................. 7 5.1 EQUIPMENTS LIST ........................................................................................................................................... 7 5.2 DESCRIPTION OF SUPPORT UNITS ................................................................................................................. 8 5.3 MEASUREMENT UNCERTAINTY ....................................................................................................................... 8 5.4 SUBCONTRACTED ............................................................................................................................................ 8 6 TEST FACILITY ..................................................................................................................................................... 8 7 TEST SUMMARY .................................................................................................................................................. 9 8 CONDUCTED EMISSION .................................................................................................................................. 10 8.1 E.U.T. OPERATION ....................................................................................................................................... 10 8.2 EUT SETUP ................................................................................................................................................... 10 8.3 MEASUREMENT DESCRIPTION ...................................................................................................................... 10 8.4 CONDUCTED EMISSION TEST RESULT ......................................................................................................... 11 9 RADIATED EMISSIONS ..................................................................................................................................... 13 9.1 EUT OPERATION ........................................................................................................................................... 13 9.2 TEST SETUP .................................................................................................................................................. 14 9.3 SPECTRUM ANALYZER SETUP ...................................................................................................................... 15 9.4 TEST PROCEDURE ........................................................................................................................................ 16 9.5 CORRECTED AMPLITUDE & MARGIN CALCULATION ..................................................................................... 16 9.6 SUMMARY OF TEST RESULTS ....................................................................................................................... 17 10 BAND EDGE MEASUREMENT ..................…

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Appendix-WNCE1WHT-Photos Page 1 of 34 1. Test Setup Photos- Model WNCE1WHT FCC ID: 2AUIUWNCE1 1.1. Photograph - Conducted Emission Test Setup 1.2. Photograph - Spurious Emissions Radiated Test Setup Left Earbud Below 1GHz Appendix-WNCE1WHT-Photos Page 2 of 34 Above 1GHz Right Earbud Below 1GHz Appendix-WNCE1WHT-Photos Page 3 of 34 Above 1GHz Appendix-WNCE1WHT-Photos Page 4 of 34 1.3. Photograph - SAR Test Setup Left earbud Head SAR (Front side) Head SAR (Top edge) Head SAR (Bottom Edge) Head SAR (Left Edge) Head SAR (Right Edge) 0mm separation 0mm separation 0mm separation 0mm separation 0mm separation Appendix-WNCE1WHT-Photos Page 5 of 34 Right earbud Head SAR (Front side) Head SAR (Top edge) Head SAR (Bottom Edge) Head SAR (Left Edge) Head SAR (Right Edge) 0mm separation 0mm separation 0mm se paration 0mm separation 0mm separation