A6B-S20BTBluetooth Headphone

02 03 04 05 08 09 10 FCC IDA6B-S20BT

Shenzhen SoundMAGIC Technology Development Co., Ltd Agent Authorization Company: Shenzhen SoundMAGIC Technology Development Co., Ltd Address: 1613# Building A, Weidonglong Business Building, Meilong Road No 2125, Qinghua Community, Longhua District, Shenzhen, China Product Name: Bluetooth Headphone Model Number(s): S20BT Product Description: Bluetooth 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: 2021-05-13 Name: Tony Xu Company: Shenzhen SoundMAGIC Technology Development Co., Ltd

External Photos WHOLE VIEW OF EUT TOP VIEW OF EUT BOTTOM VIEW OF EUT FRONT VIEW OF EUT BACK VIEW OF EUT LEFT VIEW OF EUT RIGHT VIEW OF EUT VIEW OF EUT(PORT)

FCC ID Label Location 3mm&15mm FCC ID: A6B-S20BT

Internal Photos OPEN VIEW OF EUT VIEW OF BATTERY INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 BT Antenna INTERNAL VIEW OF EUT-3

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description Bluetooth Headphone Model Name S20BT FCC ID A6B-S20BT 2. EVALUATION METHOD According to 447498 D01 General RF Exposure Guidance v06 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 3. CALCULATION P t = -1.740dBm=0.67mW The value of the Maximum output power P t is referred to the test report of the CFR47 §15.247. The result for RF exposure evaluation SAR=(0.67mW /5mm) .[√2.441GHz)]= 0.21<3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR. 4. CONCLUSION The SAR evaluation is not required.

Page 1 of 71 FCC Test Report Report No.: AGC04555201203FE03 FCC ID : A6B-S20BT APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Bluetooth Headphone BRAND NAME : SoundMAGIC MODEL NAME : S20BT APPLICANT : Shenzhen SoundMAGIC Technology Development Co., Ltd DATE OF ISSUE : May 08, 2021 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC04555201203FE03 Page 2 of 71 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / May 08, 2021 Valid Initial Release Report No.: AGC04555201203FE03 Page 3 of 71 TABLE OF CONTENTS 1. VERIFICATION OF CONFORMITY ............................................................................................................... 5 2. GENERAL INFORMATION ............................................................................................................................ 6 2.1. PRODUCT DESCRIPTION ..................................................................................................................... 6 2.2. TABLE OF CARRIER FREQUENCYS ..................................................................................................... 6 2.3. RECEIVER INPUT BANDWIDTH ............................................................................................................ 7 2.4. EXAMPLE OF A HOPPING SEQUENCY IN DATA MODE ....................................................................... 7 2.5. EQUALLY AVERAGE USE OF FREQUENCIES AND BEHAVIOUR ........................................................ 7 2.6. RELATED SUBMITTAL(S) / GRANT (S) .................................................................................................. 8 2.7. TEST METHODOLOGY .......................................................................................................................... 8 2.8. SPECIAL ACCESSORIES ....................................................................................................................... 8 2.9. EQUIPMENT MODIFICATIONS .............................................................................................................. 8 2.10. ANTENNA REQUIREMENT .................................................................................................................. 8 3. MEASUREMENT UNCERTAINTY ................................................................................................................. 9 4. DESCRIPTION OF TEST MODES ............................................................................................................... 10 5. SYSTEM TEST CONFIGURATION ............................................................................................................. 11 5.1. CONFIGURATION OF EUT SYSTEM .................................................................................................... 11 5.2. EQUIPMENT USED IN TESTED SYSTEM ............................................................................................. 11 5.3. SUMMARY OF TEST RESULTS ............................................................................................................. 11 6. TEST FACILITY ........................................................................................................................................... 12 7. PEAK OUTPUT POWER ............................................................................................................................. 13 7.1. MEASUREMENT PROCEDURE ........................................................................................................... 13 7.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 13 7.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 14 8. 20DB BANDWIDTH ..................................................................................................................................... 20 8.1. MEASUREMENT PROCEDURE ........................................................................................................... 20 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 20 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................. 21 9. CONDUCTED SPURIOUS EMISSION ........................................................................................................ 27 9.1. MEASUREMENT PROCEDURE ........................................................................................................... 27 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 27 Report No.: AGC04555201203FE03 Page 4 of 71 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................. 27 9.4. LIMITS AND MEASUREMENT RESULT ............................................................................................... 27 10. RADIATED EMISSION ............................................................................................................................... 40 10.1. MEASUREMENT PROCEDURE ......................................................................................................... 40 10.2. TEST SETUP ....................................................................................................................................... 42 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................. 43 10.4. TEST RESULT ..................................................................................................................................... 43 11. NUMBER OF HOPPING FREQUENCY ..................................................................................................... 53 11.1. MEASUREMENT PROCEDUR…

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Report No.: AGC04555201203FE03 Page 58 of 71 13. FREQUENCY SEPARATION 13.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: Wide enough to capture the peaks of two adjacent channels. 2. RBW: Start with the RBW set to approximately 30% of the channel spacing; adjust as necessary to best identify the center of each individual channel. 3. Video (or average) bandwidth (VBW) ≥ RBW. 4. Sweep: Auto. e) Detector function: Peak. f) Trace: Max hold. g) Allow the trace to stabilize. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. 13.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 6.2 13.3. MEASUREMENT EQUIPMENT USED The same as described in section 6.3 13.4. LIMITS AND MEASUREMENT RESULT TEST MODE CHANNEL SEPARATION LIMIT RESULT MHz Pass Hopping Mode 1.000 >= 2/3 20 dB BW TEST PLOT FOR FREQUENCY SEPARATION Note: The GFSK modulation is the worst case and recorded in the report. Report No.: AGC04555201203FE03 Page 59 of 71 14. FCC LINE CONDUCTED EMISSION TEST 14.1. LIMITS OF LINE CONDUCTED EMISSION TEST Frequency Maximum RF Line Voltage Q.P. (dBμV) Average (dBμV) 150kHz~500kHz 66-56 56-46 500kHz~5MHz 56 46 5MHz~30MHz 60 50 Note: 1. The lower limit shall apply at the transition frequency. 2. The limit decreases linearly with the logarithm of the frequency in the range 0.15 MHz to 0.50 MHz. 14.2. BLOCK DIAGRAM OF LINE CONDUCTED EMISSION TEST EUT & Support Units Report No.: AGC04555201203FE03 Page 60 of 71 14.3. PRELIMINARY PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. The equipment was set up as per the test configuration to simulate typical actual usage per the user’s manual. When the EUT is a tabletop system, a wooden table with a height of 0.8 meters is used and is placed on the ground plane as per ANSI C63.10 (see Test Facility for the dimensions of the ground plane used). When the EUT is a floor-standing equipment, it is placed on the ground plane which has a 3-12 mm non-conductive covering to insulate the EUT from the ground plane. 2. Support equipment, if needed, was placed as per ANSI C63.10. 3. All I/O cables were positioned to simulate typical actual usage as per ANSI C63.10. 4. All support equipment received AC120V/60Hz power from a LISN, if any. 5. The EUT received DC 5V power from adapter which received AC120V/60Hz power from a LISN. 6. The test program was started. Emissions were measured on each current carrying line of the EUT using a spectrum Analyzer / Receiver connected to the LISN powering the EUT. The LISN has two monitoring points: Line 1 (Hot Side) and Line 2 (Neutral Side). Two scans were taken: one with Line 1 connected to Analyzer / Receiver and Line 2 connected to a 50 ohm load; the second scan had Line 1 connected to a 50 ohm load and Line 2 connected to the Analyzer / Receiver. 7. Analyzer / Receiver scanned from 150 kHz to 30MHz for emissions in each of the test modes. 8. During the above scans, the emissions were maximized by cable manipulation. 9. The test mode(s) were scanned during the preliminary test. Then, the EUT configuration and cable configuration of the above highest emission level were recorded for reference of final testing. 14.4. FINAL PROCEDURE OF LINE CONDUCTED EMISSION TEST 1. EUT and support equipment was set up on the test bench as per step 2 of the preliminary test. 2. A scan was taken on both power lines, Line 1 and Line 2, recording at least the six highest emissions. Emission frequency and amplitude were recorded into a computer in which correction factors were used to calculate the emission level and compare reading to the applicable limit. If EUT emission level was less – 2dB to the A.V. limit in Peak mode, then the emission signal was re-checked using Q.P and Average detector. 3. The test data of the worst case condition(s) was reported on the Summary Data page. Report No.: AGC04555201203FE03 Page 61 of 71 14.5. TEST RESULT OF LINE CONDUCTED EMISSION TEST Line Conducted Emission Test Line 1-L RESULT: PASS Report No.: AGC04555201203FE03 Page 62 of 71 Line Conducted Emission Test Line 2-N RESULT: PASS Note: All the test modes had been tested, the mode 8 was the worst case. Only the data of the worst case would be record in this test report. Report No.: AGC04555201203FE03 Page 63 of 71 APPENDIX A: PHOTOGRAPHS OF TEST SETUP RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC04555201203FE03 Page 64 of 71 CONDUCTED EMISSION TEST SETUP CONDUCTED TEST SETUP Report No.: AGC04555201203FE03 Page 65 of 71 APPENDIX B: PHOTOGRAPHS OF EUT WHOLE VIEW OF EUT TOP VIEW OF EUT Report No.: AGC04555201203FE03 Page 66 of 71 BOTTOM VIEW OF EUT FRONT VIEW OF EUT Report No.: AGC04555201203FE03 Page 67 of 71 BACK VIEW OF EUT LEFT VIEW OF EUT Report No.: AGC04555201203FE03 Page 68 of 71 RIGHT VIEW OF EUT VIEW OF EUT(PORT) Report No.: AGC04555201203FE03 Page 69 of 71 OPEN VIEW OF EUT VIEW OF BATTERY Report No.: AGC04555201203FE03 Page 70 of 71 INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 BT Antenna Report No.: AGC04555201203FE03 Page 71 of 71 INTERNAL VIEW OF EUT-3 ----END OF REPORT---- Conditions of Issuance of Test Reports 1. All samples and goods are accepted by the Attestation of Global Compliance (Shenzhen) Co., Ltd (the “Company”) solely for testing and reporting in accordance with the following terms and conditions. The company provides its services on the basis that such terms and conditions constitute express agreement between the company and any person, firm or company requesting its services (the “Clients”). 2. Any report issued by Company as a result of this application for testing services (the “Report”) shall be issued in confidence to the Clients and the Report will be strictly treated as such by the Company. It may not be reproduced either in its entirety or in part and it may not be used for advertising or other unauthorized purposes without the written cons…

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Test Setup Photos RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz CONDUCTED EMISSION TEST SETUP CONDUCTED TEST SETUP