2BBT6-WM422Flashing LED Wireless Headphones

double press WM-422 be solid blue

FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Appendix III EUT External Photographs Photo 1 Appearance of EUT Photo 2 Appearance of EUT FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Photo 3 Appearance of EUT Photo 4 Appearance of EUT

FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Appendix IID Label Appendix II ID Label Location

FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Appendix IV EUT Internal Photographs Photo 5 Internal of EUT Photo 6 Internal of EUT FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Photo 7 Battery parameters Photo 8 Appearance of PCB FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Photo 9 Appearance of PCB Photo 10 Appearance of PCB FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Photo 11 Appearance of PCB Photo 12 Appearance of PCB BT Antenna

Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202306-0063-3 Page: 1 of 3 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 RF Exposure Evaluation FCC ID: 2BBT6-WM422 1. Client Information Applicant : DONGGUAN GPO TECHNOLOGY CO., LTD. Address : 103 ROOM, 1# BUILDING, NO. 26, CHONGHE HONGYUN STREET, QINGXI TOWN, DONGGUAN, CHINA 523660 Manufacturer : DONGGUAN GPO TECHNOLOGY CO., LTD. Address : 103 ROOM, 1# BUILDING, NO. 26, CHONGHE HONGYUN STREET, QINGXI TOWN, DONGGUAN, CHINA 523660 2. General Description of EUT EUT Name : Flashing LED Wireless Headphones Model(s) No. : WM-422, GBH40 Model Different : All these models are identical in the same PCB, layout and electrical circuit, the only difference is model name. Sample ID : RW-C-202306-0063-1-1# & RW-C-202306-0063-1-2# Product Description : Operation Frequency: Bluetooth V5.1:2402MHz~2480MHz Number of Channel: 79 channels Antenna Gain: 1.9dBi PCB Antenna Power Supply : Input: DC 5V, 1A Li-ion Polymer Battery : DC 3.7V by 250mAh Rechargeable Li-ion battery Software Version : V1.02 Hardware Version : 1.2 Remark: The antenna gain provided by the applicant, the adapter and verified for the RF conduction test and adapter provided by TOBY test lab. Note: More test information about the EUT please refer the RF Test Report. Report No.: TBR-C-202306-0063-3 Page: 2 of 3 TB-RF-074-1.0 The RF Exposure Evaluation for FCC: SAR Test Exclusion Calculations FCC: According to 447498 D04 Interim General RF Exposure Guidance v01. 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 P th (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). P th is given by Formula (B.2). and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). The example values shown in Table B.2 are for illustration only. Table B.2—Example Power Thresholds (mW) Report No.: TBR-C-202306-0063-3 Page: 3 of 3 TB-RF-074-1.0 Calculation: Test separation: 5mm Bluetooth Mode (GFSK) Frequency (GHz) Conducted Power (dBm) Turn-up Power Tolerance (dB) Max power of tune up tolerance (dBm) Max power of tune up tolerance (mW) Limit P th (mW) 2.402 -3.777 -4±1 -3 0.501 3 2.441 -3.393 -3±1 -2 0.631 3 2.480 -3.423 -3±1 -2 0.631 3 Bluetooth Mode (π/4-DQPSK) Frequency (GHz) Conducted Power (dBm) Turn-up Power Tolerance (dB) Max power of tune up tolerance (dBm) Max power of tune up tolerance (mw) Limit P th (mW) 2.402 -2.837 -3±1 -2 0.631 3 2.441 -2.502 -3±1 -2 0.631 3 2.480 -2.518 -3±1 -2 0.631 3 Bluetooth Mode (8-DPSK) 2.402 -2.208 -2±1 -1 0.794 3 2.441 -1.923 -2±1 -1 0.794 3 2.480 -1.947 -2±1 -1 0.794 3 The measurement results comply with the FCC Limit per 47 CFR 2.1093 for the uncontrolled RF Exposure and SAR Exclusion Threshold per KDB 447498 D04, No SAR is required. -----END OF THE REPORT-----

Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 1 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 RF Test Data for Bluetooth(BDR+EDR) (Conducted Measurements) General Description of EUT Product Name: Flashing LED Wireless Headphones Test Model: WM-422 Sample ID: RW-C-202306-0063-1-2# Environmental Conditions Temperature: 25°C Relative Humidity: 55% Test Voltage: DC 3.7V Test Engineer: Huang jian ping Note: For a more detailed features description, please refer to the report TBR-C-202306-0063-1 The report only show the worst case data. Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 2 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Contents 1. Duty Cycle ........................................................................................................................................................................................... 3 2. Maximum Conducted Output Power ................................................................................................................................................. 9 3. -20dB Bandwidth .............................................................................................................................................................................. 15 4. Occupied Channel Bandwidth ......................................................................................................................................................... 21 5. Band Edge ........................................................................................................................................................................................ 27 6. Band Edge(Hopping) ........................................................................................................................................................................ 34 7. Conducted RF Spurious Emission .................................................................................................................................................. 41 8. Restrict Band .................................................................................................................................................................................... 51 9. Carrier Frequencies Separation....................................................................................................................................................... 58 10. Number of Hopping Channel ......................................................................................................................................................... 61 11. Dwell Time ....................................................................................................................................................................................... 64 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 3 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 1. Duty Cycle Condition Mode Frequency (MHz) Antenna Duty Cycle (%) Correction Factor (dB) 1/T (kHz) NVNT 1-DH1 2402 Ant1 30.4 5.17 2.63 NVNT 1-DH1 2441 Ant1 30.4 5.17 2.63 NVNT 1-DH1 2480 Ant1 30.4 5.17 2.63 NVNT 2-DH1 2402 Ant1 31.2 5.06 2.56 NVNT 2-DH1 2441 Ant1 30.4 5.17 2.63 NVNT 2-DH1 2480 Ant1 30.4 5.17 2.63 NVNT 3-DH1 2402 Ant1 31.2 5.06 2.56 NVNT 3-DH1 2441 Ant1 30.4 5.17 2.63 NVNT 3-DH1 2480 Ant1 30.4 5.17 2.63 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 4 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Test Graphs Duty Cycle NVNT 1-DH1 2402MHz Ant1 Duty Cycle NVNT 1-DH1 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 5 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Duty Cycle NVNT 1-DH1 2480MHz Ant1 Duty Cycle NVNT 2-DH1 2402MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 6 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Duty Cycle NVNT 2-DH1 2441MHz Ant1 Duty Cycle NVNT 2-DH1 2480MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 7 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Duty Cycle NVNT 3-DH1 2402MHz Ant1 Duty Cycle NVNT 3-DH1 2441MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 8 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Duty Cycle NVNT 3-DH1 2480MHz Ant1 Shenzhen Toby Technology Co., Ltd. Http://www.tobylab.cn Add：1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China. Report No.: TBR-C-202306-0063-1 Page: 9 of 69 FCC ID: 2BBT6-WM422 TB-RF-074-1.0 2. Maximum Conducted Output Power Condition Mode Frequency (MHz) Antenna Conducted Power (dBm) Limit (dBm) Verdict NVNT 1-DH1 2402 Ant1 -3.777 21 Pass NVNT 1-DH1 2441 Ant1 -3.393 21 Pass NVNT 1-DH1 2480 Ant1 -3.423 21 Pass NVNT 2-DH1 2402 Ant1 -2.837 21 Pass NVNT 2-DH1 2441 Ant1 -2.502 21 Pass NVNT 2-DH1 2480 Ant1 -2.518 21 Pass NVNT 3-DH1 2402 Ant1 -2.208 21 Pass NVNT 3-DH1 2441 Ant1 -1.923 21 Pass NVNT 3-…

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Shenzhen Toby Technology Co., Ltd. Report No.: TBR-C-202306-0063-1 Page: 1 of 48 TB-RF-074-1.0 1/F.,Building 6, Rundongsheng Industrial Zone, Longzhu, Xixiang, Bao'an District, Shenzhen, Guangdong, China Tel: +86 75526509301 Fax: +86 75526509195 Radio Test Report FCC ID: 2BBT6-WM422 Report No. : TBR-C-202306-0063-1 Applicant : DONGGUAN GPO TECHNOLOGY CO., LTD. Equipment Under Test (EUT) EUT Name : Flashing LED Wireless Headphones Model No. : WM-422 Series Model No. : GBH40 Brand Name : Sasa Tech, GPO Sample ID : RW-C-202306-0063-1-1# & RW-C-202306-0063-1-2# Receipt Date : 2023-06-07 Test Date : 2023-06-07 to 2023-06-19 Issue Date : 2023-06-27 Standards : FCC Part 15 Subpart C 15.247 Test Method : ANSI C63.10: 2013 KDB 558074 D01 15.247 Meas Guidance v05r02 Conclusions : PASS In the configuration tested, the EUT complied with the standards specified above. Witness Engineer : Wade. Lv Engineer Supervisor : Ivan Su Engineer Manager : Ray Lai This report details the results of the testing carried out on one sample. The results contained in this test report do not relate to other samples of the same product. The manufacturer should ensure that all products in series production are in conformity with the product sample detailed in the report. Report No.: TBR-C-202306-0063-1 Page: 2 of 48 TB-RF-074-1.0 Contents CONTENTS ............................................................................................................................................. 2 1. GENERAL INFORMATION ABOUT EUT.............................................................................. 6 1.1 Client Information ................................................................................................................. 6 1.2 General Description of EUT (Equipment Under Test) ................................................... 6 1.3 Block Diagram Showing the Configuration of System Tested ...................................... 8 1.4 Description of Support Units .............................................................................................. 8 1.5 Description of Test Mode .................................................................................................... 9 1.6 Description of Test Software Setting .............................................................................. 10 1.7 Measurement Uncertainty ................................................................................................ 10 1.8 Test Facility ......................................................................................................................... 11 2. TEST SUMMARY ..................................................................................................................... 12 3. TEST SOFTWARE ................................................................................................................... 12 4. TEST EQUIPMENT .................................................................................................................. 13 5. CONDUCTED EMISSION ....................................................................................................... 15 5.1 Test Standard and Limit .................................................................................................... 15 5.2 Test Setup ........................................................................................................................... 15 5.3 Test Procedure ................................................................................................................... 15 5.4 Deviation From Test Standard ......................................................................................... 16 5.5 EUT Operating Mode ........................................................................................................ 16 5.6 Test Data ............................................................................................................................. 16 6. RADIATED AND CONDUCTED UNWANTED EMISSIONS ............................................ 17 6.1 Test Standard and Limit .................................................................................................... 17 6.2 Test Setup ........................................................................................................................... 19 6.3 Test Procedure ................................................................................................................... 20 6.4 Deviation From Test Standard ......................................................................................... 21 6.5 EUT Operating Mode ........................................................................................................ 21 6.6 Test Data ............................................................................................................................. 21 7. EMISSIONS IN RESTRICTED BANDS ............................................................................... 22 7.1 Test Standard and Limit .................................................................................................... 22 7.2 Test Setup ........................................................................................................................... 22 7.3 Test Procedure ................................................................................................................... 23 7.4 Deviation From Test Standard ......................................................................................... 24 Report No.: TBR-C-202306-0063-1 Page: 3 of 48 TB-RF-074-1.0 7.5 EUT Operating Mode ........................................................................................................ 24 7.6 Test Data ............................................................................................................................. 24 8. 99% OCCUPIED AND 20DB BANDWIDTH ........................................................................ 25 8.1 Test Standard and Limit .....................…

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version01 DONGGUAN GPO TECHNOLOGY CO., LTD. Declaration concerning Antenna Specification It is hereby declared that the product Model No.: WM-422, GBH40 FCC ID: 2BBT6-WM422 fulfills the requirement in FCC test relating to the antenna type. The device specified above confirms to the FCC recommendations for PCB antenna type(s) described below: Antenna No. Model No. of antenna: Type of antenna: Gain of the antenna (Max.) Frequency range: Bluetooth / PCB Antenna 1.9dBi for 2400-2500MHz; The mounting of the antenna is fixed to the radio module and no other antenna should be used. Company name: DONGGUAN GPO TECHNOLOGY CO., LTD. Address: 103 ROOM, 1# BUILDING, NO. 26, CHONGHE HONGYUN STREET, QINGXI TOWN, DONGGUAN, CHINA 523660 Place: Silver Guo Date: 2023-6-27 Signature:

Productspecification QuickReferenceDate Antennamoduleonthesystemboard FrequencRange 2400～2500MHz Ant.PortInputPwr.(dBm)0(Typ.BTclass2outputpower) Tot.Rad.Pwr.(dBm) -1.2(Inputpwr-losspwr) PeakEIRP(dBm) 1.2 Directivity(dBi) 1(alldirectionantenna) Efficiency(dB) 60.2% Gain(dBi) 1.9(AvgGainXY-plane) MaximumPower(dBm) 1.7(XY-plane) MinimumPower(dBm) -4(XY-plane) Avg.Power(dBm) -0.5(XY-plane) InputImpendence(ohm) 50 PolarizationType Vertical&Horizontal V.S.W.R <1.4 Allthetechnicaldataandinformationcontainedhereinaresubjecttochangewithoutpriornotice AntennaLayout&moduleonthesystemboard AntennaGain GainTable [email protected] XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. ModuleBoard 1.1 -0.4 1.7 -3.5 1.0 -2.9 60.1% [email protected] XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. ModuleBoard 1.2 -0.5 1.9 -3.6 1.1 -3.0 60.2% [email protected] XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. ModuleBoard 1.3 -0.6 1.9 -3.6 1.2 -3.1 60.4% RetumLoss TheEnvironmentofAntennaRadiationPattem VNAPort2 Tumingsupport AuT Walkingchannel HornAntenna VNAPort1 MetashieldingRoom Absorber 3Dradiationpatterndiagram 。 112.50c0 135.00 -5.200d⁸ nodee XZ-plane Far-fieldPowerDistribution(H+V)onX-ZPlane plotPeakGain(H-V)-1.68dBi,@245000GHz *y -35 -40 YZ-plane Far-fieldPowerDistribution(H+V)onY-ZPlane PlotPeakGain(H-V)-1.11dBi,plotAvgan(H-V)-2.99dBi,@245000GHZ XY-plane PlotPeakGainH-V)-1.35dBi,PlotAvgan(H+V)-0.48dBi @245000GHz Far-fieldPowerDistribution(H+V)onX-YPlane

FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Appendix V EUT Test Photographs Photo of Setup for Radiated Emission (Below 1 GHz) Photo of Setup for Radiated Emission (Above 1 GHz) FCC ID: 2BBT6-WM422 TB-RF-074-1.0 Photo of Setup for Radiated Emission (Above 1 GHz) Photo of Setup for Conducted Emission -----END OF THE REPORT-----