2AZJ2-WM-422WIRELESS HEADPHONE

文件编码: 审核人签名：日期： 客户编码: IHIP客户编码: IHIP2204产品型号：WM-422类型： 说明书材质：80G书纸高低温测试： 是 否 制作人: 林传春电话: 18666221782颜色： C M Y K其它工艺：彩色印刷 展开尺寸：长250*高86mm 折后尺寸：宽50*高86mm 五折 The device has been evaluated to meet general RF exposure requirement.

Dongguan Yinwo Electronic Technology Co., Ltd Agent Authorization Company: Dongguan Yinwo Electronic Technology Co., Ltd Address: Building 1, No. 18 Jiaoping Road, Tangxia Town, Dongguan, Guangdong China Product Name: WIRELESS HEADPHONE Model Number(s): WM-422 Product Description: WIRELESS HEADPHONE 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: Apr. 27, 2022 Name: Jessie LI Title: Saler Company: Dongguan Yinwo Electronic Technology Co., Ltd

Dongguan Yinwo Electronic Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Apr. 27, 2022 Subject; Request for Confidentiality FCC ID: 2AZJ2-WM-422 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 Parts List Operational Description 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: Jessie LI Title: Saler

Annex A External Photos Report No.: HK2204121513-E Page 1 of 3 Report No.: HK2204121513-E Page 2 of 3 Report No.: HK2204121513-E Page 3 of 3

FCC ID LABEL: Ca. 5mm x 10mm Label Location FCC ID: 2AZJ2-WM-422

Annex B Internal Photo Report No.: HK2204121513-E Page 1 of 3 Antenna Report No.: HK2204121513-E Page 2 of 3 Report No.: HK2204121513-E Page 3 of 3

FCC RF Exposure EUT Description: WIRELESS HEADPHONE Model No.: WM-422 FCC ID: 2AZJ2-WM-422 1. Limits According to KDB 447498 D04 General RF Exposure Guidance v01 The 1‐g and 10‐g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤50 mm are determined by: [(max power of channel, including tune‐up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHz)]≤3.0 for 1‐g SAR and ≤ 7.5 for 10‐g extremity SAR, Where: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Output power (dBm) Tune Up Power (dBm) Max Tune Up power dBm/mW Min test separati on distance mm Result Limit SAR Test Exclusion EDR 4.17 3.5±1(4.5)2.82 5 0.8877 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2204121513-E, antenna gain=1.2dBi Per KDB 447498 D04, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 0.8877 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f (GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

Page 1 of 47 Report No.: HK2204121513-E TEST REPORT FCC PART 15 SUBPART C 15.247 Test report On Behalf of Dongguan Yinwo Electronic Technology Co., Ltd For WIRELESS HEADPHONE Model No.: WM-422 FCC ID: 2AZJ2-WM-422 Prepared for : Dongguan Yinwo Electronic Technology Co., Ltd Building 1, No. 18 Jiaoping Road, Tangxia Town, Dongguan, Guangdong China Prepared By : Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Apr. 12, 2022 ~ Apr. 19, 2022 Date of Report: Apr. 19, 2022 Report Number: HK2204121513-E Page 2 of 47 Report No.: HK2204121513-E TEST RESULT CERTIFICATION Applicant’s name ................. : Dongguan Yinwo Electronic Technology Co., Ltd Address ................................. : Building 1, No. 18 Jiaoping Road, Tangxia Town, Dongguan, Guangdong China Manufacture's Name ............ : Dongguan Yinwo Electronic Technology Co., Ltd Address ................................. : Building 1, No. 18 Jiaoping Road, Tangxia Town, Dongguan, Guangdong China Product description Trade Mark: N/A Product name ........................... : WIRELESS HEADPHONE Model and/or type reference : WM-422 Standards ............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................................ : Date (s) of performance of tests ............. : Apr. 12, 2022 ~ Apr. 19, 2022 Date of Issue ........................................... : Apr. 19, 2022 Test Result ............................................... : Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Technical Director Page 3 of 47 Report No.: HK2204121513-E Table of Contents Page 1. SUMMARY............................................................................................................................................................ 5 1.1. TEST STANDARDS ..................................................................................................................................................... 5 1.2. TEST DESCRIPTION ........................................................................................................................................................ 5 1.3. INFORMATION OF THE TEST LABORATORY ......................................................................................................................... 6 1.4. STATEMENT OF THE MEASUREMENT UNCERTAINTY ............................................................................................................... 6 2. GENERAL INFORMATION ....................................................................................................................................... 7 2.1. ENVIRONMENTAL CONDITIONS ........................................................................................................................................ 7 2.2. GENERAL DESCRIPTION OF EUT ...................................................................................................................................... 7 2.3. DESCRIPTION OF TEST MODES AND TEST FREQUENCY .......................................................................................................... 8 2.4. EQUIPMENTS USED DURING THE TEST .............................................................................................................................. 9 2.5. RELATED SUBMITTAL(S) / GRANT (S) .............................................................................................................................. 10 2.6. MODIFICATIONS ......................................................................................................................................................... 10 2.7. DESCRIPTION OF TEST SETUP ................................................................................................................................ 10 3. TEST CONDITIONS AND RESULTS ......................................................................................................................... 11 3.1. CONDUCTED EMISSIONS TEST ....................................................................................................................................... 11 3.2. RADIATED EMISSIONS AND BAND EDGE .......................................................................................................................... 14 3.3. MAXIMUM PEAK CONDUCTED OUTPUT POWER ............................................................................................................... 25 3.4. 20DB BANDWIDTH ..................................................................................................................................................... 26 3.5. FREQUENCY SEPARATION ............................................................................................................................................. 29 3.6. NUMBER OF HOPPING FREQUENCY ................................................................................................................................. 31 3.7. TIME OF OCCUPANCY (DWELL TIME) .............................................................................................................................. 33 3.8. OUT‐OF‐BAND EMISSIONS ............................................................................................................................................ 36 3.9. PSEUDORANDOM FREQUENCY HOPPING SEQUENCE .......................................................................................................... 43 3.10…

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Radiated Emissions Conducted Emission