2ATWG-AEA05TRULY WIRELESS EARBUDS

IC Caution This device complies with Industry Canada’s licence-exempt RSSs. Operation is subject to the following two conditions (1) This device may not cause interference; and (2) This device must accept any interference, including interference that may cause undesired operation of the device. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux apparei ls radio exempts de licence. L'exploitation est autorisée aux deux conditions suivantes (1) l'appareil ne doit pas produire de brouillage, et (2) l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le brouillage est susceptible d'en compromettre le fonctionnement. L'appa reil a été éval ué pour répondre aux exi gences générales d'exposi t ion R F. L'appa reil peut être util isé dans des conditions d'exposit i on port abl es sans restriction

Rev 11/20/07 (Shenzhen Yuangu Technology Co., Ltd.) Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2ATWG-AEA05 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 Block Diagram, Schematics, Operational Description Block Diagram Schematics Operational Description 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, (Certification Marvin )

Shenzhen Yuangu Technology Co., Ltd. Model Difference 2021/04/22 EUT NAME: TRULY WIRELESS EARBUDS FCC ID: 2ATWG-AEA05 MODEL : AEA05, AEA06, AEA08, AEA9, AEA10, AEA11, AEA12, AEA13, ET1, ET6, ET10 All the model are the same circuit and RF module, except model names. Regards Sincerely Client’s signature Client’s name / title : Certification Marvin / Certification Manager Contact information / address: No.101, 1st Factory Building, Hebei Industrial Park, Ma'antang Community, Hebeizhongxing Road, Bantian Sub-district, Longgang District, Shenzhen, China

(Shenzhen Yuangu Technology Co., Ltd.) Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Date: 2021/04/22 SUBJECT: FCC Application for FCC ID: 2ATWG-AEA05 To Whom It May Concern: We, the undersigned, hereby authorize Alan Mei at Shenzhen BCTC Testing Co., Ltd. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Alan Mei of Shenzhen BCTC Testing Co., Ltd. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, 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. Regards (Certification Marvin )

External Photos

Label & label location FCC ID: 2ATWG-AEA05 Label location Label location

Internal Photos Antenna Antenna

RF EXPOSURE EVALUATION METHOD FCC ID: 2ATWG-AEA05 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 Left max possible output power (PK,conducted)：1±1dbm -0.66dBi logarithmic terms convert to numeric result is nearly 0.859 2dbm=1.58mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=1.58/5*√2.402 =0.49≤3.0 Threshold at which no SAR required is 10mw and ≤ 3.0 for 1-g SAR, Separation distance is 5mm. Modulation Frequency (MHz) Output Power (dBm) Max Antenna Gain (dBi) GFSK 2402 0.489 1.72 GFSK 2441 -0.003 1.72 GFSK 2480 -1.032 1.72 Pi/4 DQPSK 2402 0.460 1.72 Pi/4 DQPSK 2441 -0.016 1.72 Pi/4 DQPSK 2480 -1.030 1.72 8DPSK 2402 0.427 1.72 8DPSK 2441 -0.017 1.72 8DPSK 2480 -0.984 1.72 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]=1.58/5*√2.441 =0.49≤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)]=1.58/5*√2.48=0.50≤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-005 Page: 1 of 69 Edition：A.3 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2102996484E Applicant: Shenzhen Yuangu Technology Co., Ltd. Product Name: TRULY WIRELESS EARBUDS Model/Type Ref.: AEA05 Tested Date: 2021-02-26 to 2021-03-10 Issued Date: 2021-03-10 Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 2 of 69 Edition：A.3 FCC ID: 2ATWG-AEA05 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: TRULY WIRELESS EARBUDS Trademark: N/A Model/Type Ref.: AEA05 AEA06, AEA08, AEA9, AEA10, AEA11, AEA12, AEA13, ET1, ET6, ET10 Prepared For: Shenzhen Yuangu Technology Co., Ltd. Address: No.101, 1st Factory Building, Hebei Industrial Park, Ma'antang Community, Hebeizhongxing Road, Bantian Sub-district, Longgang District, Shenzhen, China Manufacturer: Shenzhen Yuangu Technology Co., Ltd. Address: No.101, 1st Factory Building, Hebei Industrial Park, Ma'antang Community, Hebeizhongxing Road, Bantian Sub-district, Longgang District, 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: 2021-02-26 Sample tested Date: 2021-02-26 to 2021-03-10 Issue Date: 2021-03-10 Report No.: BCTC2102996484E Test Standards FCC Part15.247 ANSI C63.10-2013 Test Results PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Willem Wang/Project Handler Zero Zhou/Reviewer Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 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 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 ............................................... 13 6.5 Test Result ........................................................... 14 7. RADIATED EMISSIONS ............................................... 16 7.1 Block Diagram Of Test Setup ............................................ 16 7.2 Limit ................................................................. 17 7.3 Test procedure ........................................................ 18 7.4 EUT operating Conditions ............................................... 19 7.5 Test Result ........................................................... 20 8. RADIATED BAND EMISSION MEASUREMENT AND RESTRICTED BANDS OF OPERATION ................................................... 24 8.1 Block Diagram Of Test Setup ............................................ 24 8.2 Limit ................................................................. 24 8.3 Test procedure ........................................................ 25 8.4 EUT operating Conditions ............................................... 25 8.5 Test Result ........................................................... 26 9. CONDUCTED EMISSION .............................................. 27 9.1 Block Diagram Of Test Setup ............................................ 27 9.2 Limit ................................................................. 27 9.3 Test procedure ........................................................ 27 9.4 Test Result ........................................................... 28 10. 20 DB BANDWIDTH .................................................. 37 10.1 Block Diagram Of Test Setup .......................................... 37 10.2 Limit ................................................................ 37 Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 4 of 69 Edition：A.3 10.3 Test procedure ....................................................... 37 10.4 Test Result .......................................................... 38 11. MAXIMUM PEAK OUTPUT POWER .................................... 43 11.1 Block Diagram Of Test Setup .......................................... 43 11.2 Limit ................................................................ 43 11.3 Test procedure ....................................................... 43 11.4 Test Result .......................................................... 44 12. HOPPING CHANNEL SEPARATION .................................... 49 12.1 Block Diagram Of Test Setup .......................................... 49 12.2 Limit ................................................................ 49 12.3 Test procedure ....................................................... 49 12.4 Test Result .......................................................... 50 13. NUMBER OF HOPPING FREQUENCY .................................. 55 13.1 Block Diagram …

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Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 41 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 42 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 43 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.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 44 of 69 Edition：A.3 11.4 Test Result Temperature： 26°C Relative Humidity： 54% Test Voltage ： DC 3.7V Remark: N/A Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low 0.489 21 GFSK Middle -0.003 21 GFSK High -1.032 21 Pi/4 DQPSK Low 0.460 21 Pi/4 DQPSK Middle -0.016 21 Pi/4 DQPSK High -1.030 21 8DPSK Low 0.427 21 8DPSK Middle -0.017 21 8DPSK High -0.984 21 Test plots GFSK Low Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 45 of 69 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 46 of 69 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 47 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 48 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 49 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.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 50 of 69 Edition：A.3 12.4 Test Result Modulation Test Channel Separation (MHz) Limit(MHz) Result GFSK Low 1.000 0.695 PASS GFSK Middle 0.996 0.690 PASS GFSK High 1.020 0.697 PASS Pi/4 DQPSK Low 0.998 0.789 PASS Pi/4 DQPSK Middle 1.004 0.791 PASS Pi/4 DQPSK High 1.000 0.791 PASS 8DPSK Low 1.008 0.781 PASS 8DPSK Middle 1.000 0.785 PASS 8DPSK High 0.996 0.787 PASS Test plots GFSK Low Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 51 of 69 Edition：A.3 GFSK Middle Channel GFSK High Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 52 of 69 Edition：A.3 Pi/4 DQPSK Low Channel Pi/4 DQPSK Middle Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 53 of 69 Edition：A.3 Pi/4 DQPSK High Channel 8DPSK Low Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 54 of 69 Edition：A.3 8DPSK Middle Channel 8DPSK High Channel Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 55 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.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 56 of 69 Edition：A.3 13.4 Test Result Test Plots: 79 Channels in total GFSK Pi/4 DQPSK Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 57 of 69 Edition：A.3 8DPSK Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 58 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). Report…

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Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 67 of 69 Edition：A.3 17. EUT TEST SETUP PHOTOGRAPHS Conducted emissions Radiated Measurement Photos Report No.: BCTC2102996484E No.：BCTC/RF-EMC-005 Page: 68 of 69 Edition：A.3