2AYP9KM-HTW006RTrue wireless gaming earbuds

Shenzhen YaFex E-Commerce Co., Ltd. 2021.06.15 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: True wireless gaming earbuds Trademark: KMOUK MODEL : KM-HTW006 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. 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. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Meilin Wu /CEO Contact information / address: Floor 13A, Building11, Tianan Yunpu Phase 2, 2018 xuegang Road, Bantian Street, Shenzhen, China

Shenzhen YaFex E-Commerce Co., Ltd. 2021.06.15 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Meilin Wu /CEO Contact information / address: Floor 13A, Building11, Tianan Yunpu Phase 2, 2018 xuegang Road, Bantian Street, Shenzhen, China

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Size:15*5mm True wireless gaming earbuds FCC ID: 2AYP9KM-HTW006R Label location

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RF EXPOSURE EVALUATION METHOD FCC ID: 2AYP9KM-HTW006R Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. 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 f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BT-EDR Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low -5.751 21 GFSK Middle -4.940 21 GFSK High -5.024 21 Pi/4 DQPSK Low -2.913 21 Pi/4 DQPSK Middle -2.135 21 Pi/4 DQPSK High -2.278 21 8DPSK Low -2.204 21 8DPSK Middle -1.472 21 8DPSK High -1.606 21 max possible output power (PK,conducted)：-2±1dBm 0.46dBi logarithmic terms convert to numeric result is nearly 1.112 -1dBm=0.79mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=0.79/5*√2.402=0.245≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 0.79/5*√2.441=0.247≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 0.79/5*√2.48=0.249≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. Conclusion: No SAR is required.

No.：BCTC/RF-EMC-007 Page: 1 of 69 Edition：A.3 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2106228263E Applicant: Shenzhen YaFex E-Commerce Co., Ltd. Product Name: True wireless gaming earbuds Model/Type reference: KM-HTW006 Tested Date: 2021-06-09 to 2021-06-17 Issued Date: 2021-06-28 Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 2 of 69 Edition：A.3 FCC ID :2AYP9KM-HTW006R 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: True wireless gaming earbuds Trademark: KMOUK Model/Type reference: KM-HTW006 Prepared For: Shenzhen YaFex E-Commerce Co., Ltd. Address: Floor 13A, Building11, Tianan Yunpu Phase 2, 2018 xuegang Road, Bantian Street, Shenzhen, China Manufacturer: Shenzhen YaFex E-Commerce Co., Ltd. Address: Floor 13A, Building11, Tianan Yunpu Phase 2, 2018 xuegang Road, Bantian Street, 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: 2021-06-09 Sample tested Date: 2021-06-09 to 2021-06-17 Issue Date: 2021-06-28 Report No.: BCTC2106228263E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Lei Chen/Project Handler Zero Zhou/Reviewer Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 3 of 69 Edition：A.3 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. CONDUCTED EMISSIONS ............................................ 13 6.1 Block Diagram Of Test Setup ............................................ 13 6.2 Limit ................................................................. 13 6.3 Test procedure ........................................................ 13 6.4 EUT operating Conditions ............................................... 14 6.5 Test Result ........................................................... 15 7. RADIATED EMISSIONS .............................................. 17 7.1 Block Diagram Of Test Setup ............................................ 17 7.2 Limit ................................................................. 18 7.3 Test procedure ........................................................ 19 7.4 EUT operating Conditions ............................................... 20 7.5 Test Result ........................................................... 21 8. RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION .................................................. 25 8.1 Block Diagram Of Test Setup ............................................ 25 8.2 Limit ................................................................. 25 8.3 Test procedure ........................................................ 26 8.4 EUT operating Conditions ............................................... 26 8.5 Test Result ........................................................... 27 9. CONDUCTED EMISSION ............................................. 28 9.1 Block Diagram Of Test Setup ............................................ 28 9.2 Limit ................................................................. 28 9.3 Test procedure ........................................................ 28 9.4 Test Result ........................................................... 29 10. 20 DB BANDWIDTH .................................................. 38 10.1 Block Diagram Of Test Setup .......................................... 38 Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 4 of 69 Edition：A.3 10.2 Limit ................................................................ 38 10.3 Test procedure ....................................................... 38 10.4 Test Result .......................................................... 39 11. MAXIMUM PEAK OUTPUT POWER .................................... 44 11.1 Block Diagram Of Test Setup .......................................... 44 11.2 Limit ................................................................ 44 11.3 Test procedure ....................................................... 44 11.4 Test Result .......................................................... 45 12. HOPPING CHANNEL SEPARATION ................................... 50 12.1 Block Diagram Of Test Setup .......................................... 50 12.2 Limit ................................................................ 50 12.3 Test procedure ....................................................... 50 12.4 Test Result .......................................................... 51 13. NUMBER OF HOPPING FREQUENCY .................................. 56 13.1 Block Diagram Of Test Setup .......................................... 56 13.2 Limi…

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Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 42 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 43 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 44 of 69 Edition：A.3 11. MAXIMUM PEAK OUTPUT POWER 11.1 Block Diagram Of Test Setup 11.2 Limit FCC Part15 (15.247) , Subpart C Section Test Item Limit Frequency Range (MHz) Result 15.247(b)(1) Peak Output Power 0.125 watt or 21dBm 2400-2483.5 PASS 11.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 3MHz. VBW = 3MHz. Sweep = auto; Detector Function = Peak. 3. Keep the EUT in transmitting at lowest, medium and highest channel individually. Record the max value. Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 45 of 69 Edition：A.3 11.4 Test Result Temperature： 26°C Relative Humidity： 54% Test Voltage ： AC 120V/60Hz Remark: N/A Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low -5.751 21 GFSK Middle -4.940 21 GFSK High -5.024 21 Pi/4 DQPSK Low -2.913 21 Pi/4 DQPSK Middle -2.135 21 Pi/4 DQPSK High -2.278 21 8DPSK Low -2.204 21 8DPSK Middle -1.472 21 8DPSK High -1.606 21 Test plots GFSK Low Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 46 of 69 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 47 of 69 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 48 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 49 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 50 of 69 Edition：A.3 12. HOPPING CHANNEL SEPARATION 12.1 Block Diagram Of Test Setup 12.2 Limit Frequency hopping systems shall have hopping channel carrier frequencies separated by a minimum of 25 kHz or the 20 dB bandwidth of the hopping channel, whichever is greater. Alternatively, frequency hopping systems operating in the 2400-2483.5 MHz band may have hopping channel carrier frequencies that are separated by 25 kHz or two-thirds of the 20 dB bandwidth of the hopping channel, whichever is greater, provided the systems operate with an output power no greater than 0.125W. 12.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 30kHz. VBW = 100kHz , Span = 2.0MHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. The limit is specified in one of the subparagraphs of this Section Submit this plot. Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 51 of 69 Edition：A.3 12.4 Test Result Modulation Test Channel Separation (MHz) Limit(MHz) Result GFSK Low 1.000 0.629 PASS GFSK Middle 1.000 0.628 PASS GFSK High 1.002 0.628 PASS Pi/4 DQPSK Low 1.002 0.841 PASS Pi/4 DQPSK Middle 1.004 0.843 PASS Pi/4 DQPSK High 1.000 0.845 PASS 8DPSK Low 1.000 0.835 PASS 8DPSK Middle 0.998 0.825 PASS 8DPSK High 1.000 0.837 PASS Test plots GFSK Low Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 52 of 69 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 53 of 69 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 54 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 55 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 56 of 69 Edition：A.3 13. NUMBER OF HOPPING FREQUENCY 13.1 Block Diagram Of Test Setup 13.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. 13.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set the spectrum analyzer: RBW = 100kHz. VBW = 300kHz. Sweep = auto; Detector Function = Peak. Trace = Max hold. 3. Allow the trace to stabilize. It may prove necessary to break the span up to sections. in order to clearly show all of the hopping frequencies. The limit is specified in one of the subparagraphs of this Section. 4. Set the spectrum analyzer: Start Frequency = 2.4GHz, Stop Frequency = 2.4835GHz. Sweep=auto; Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 57 of 69 Edition：A.3 13.4 Test Result Test Plots: 79 Channels in total GFSK Pi/4 DQPSK Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 58 of 69 Edition：A.3 8DPSK Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 59 of 69 Edition：A.3 14. DWELL TIME 14.1 Block Diagram Of Test Setup 14.2 Limit Frequency hopping systems in the 2400-2483.5 MHz band shall use at least 15 channels. The average time of occupancy on any channel shall not be greater than 0.4 seconds within a period of 0.4 seconds multiplied by the number of hopping channels employed. Frequency hopping systems may avoid or suppress transmissions on a particular hopping frequency provided that a minimum of 15 channels are used. 14.3 Test procedure 1. Remove the antenna from the EUT and then connect a low RF cable from the antenna port to the spectrum. 2. Set spectrum analyzer span = 0. Centred on a hopping channel; 3. Set RBW = 1MHz and VBW = 3MHz.Sweep = as necessary to capture the entire dwell time per hopping channel. Set the EUT for DH5, DH3 and DH1 packet transmitting. 4. Use the marker-delta function to determine the dwell time. If this value varies with different modes of operation (e.g.. data rate. modulation format. etc.). repeat this test for each variation. The limit is specified in one of the subparagraphs of this Section. Submit this plot(s)…

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Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 67 of 69 Edition：A.3 17. EUT TEST SETUP PHOTOGRAPHS Conducted emissions Report No.: BCTC2106228263E No.：BCTC/RF-EMC-007 Page: 68 of 69 Edition：A.3 Radiated Measurement Photos