2AVTOTWS06TWS Earbud with Bluetooth

Star Technology Industrial Co., Limited May 07, 2020 Federal Communication Commission Authorization and Evaluation Division FCC ID: 2AVTOTWS06 Re: Confidentiality Request Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, the applicant hereby requests confidential treatment of information applied this application as outlined below: 1: Block Diagram 2: Schematics 3: Operational Description The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rules 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Sincerely, Star Technology Industrial Co., Limited Contact person: Lily Huang

External Photos ALL 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

FCC ID Label Location FCC ID:2AVTOTWS06

Internal Photos OPEN VIEW OF EUT-right INTERNAL VIEW-1 OF EUT INTERNAL VIEW-2 OF EUT INTERNAL VIEW-3 OF EUT Antenna INTERNAL VIEW-4 OF EUT VIEW OF BATTERY OPEN VIEW-1 OF EUT-left OPEN VIEW-2 OF EUT INTERNAL VIEW-1 OF EUT INTERNAL VIEW-2 OF EUT INTERNAL VIEW-3 OF EUT INTERNAL VIEW-4 OF EUT Antenna VIEW OF BATTERY

Page 1 of 67 FCC Test Report Report No.: AGC00806200403FE03 FCC ID : 2AVTOTWS06 APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : TWS Earbud BRAND NAME : N/A MODEL NAME : TWS06, TWS06S, EB5528, EB5469 APPLICANT : Star Technology Industrial CO., Limited DATE OF ISSUE : May 07, 2020 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd CAUTION: This report shall not be reproduced except in full without the written permission of the test laboratory and shall not be quoted out of context. Report No.: AGC00806200403FE03 Page 2 of 67 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / May 07, 2020 Valid Initial Release Report No.: AGC00806200403FE03 Page 3 of 67 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 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 ............................................................................................. 20 9. CONDUCTED SPURIOUS EMISSION ........................................................................................................ 27 9.1. MEASUREMENT PROCEDURE ........................................................................................................... 27 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) ................................................................... 27 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................. 27 Report No.: AGC00806200403FE03 Page 4 of 67 9.4. LIMITS AND MEASUREMENT RESULT ............................................................................................... 27 10. RADIATED EMISSION ............................................................................................................................... 37 10.1. MEASUREMENT PROCEDURE ......................................................................................................... 37 10.2. TEST SETUP ....................................................................................................................................... 39 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................. 40 10.4. TEST RESULT ..................................................................................................................................... 40 11. NUMBER OF HOPPING FREQUENCY ..................................................................................................... 50 11.1. MEASUREMENT …

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Report No.: AGC00806200403FE03 Page 53 of 67 TEST PLOT OF MIDDLE CHANNEL Report No.: AGC00806200403FE03 Page 54 of 67 TEST PLOT OF HIGH CHANNEL Report No.: AGC00806200403FE03 Page 55 of 67 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 CHANNEL CHANNEL SEPARATION LIMIT RESULT KHz KHz Pass CH01-CH02 990 >=25 KHz or 2/3 20 dB BW TEST PLOT FOR FREQUENCY SEPARATION Note: The 8DPSK modulation is the worst case and recorded in the report. Report No.: AGC00806200403FE03 Page 56 of 67 APPENDIX A: PHOTOGRAPHS OF TEST SETUP RADIATED EMISSION TEST SETUP BELOW 1GHZ RADIATED EMISSION TEST SETUP ABOVE 1GHZ Report No.: AGC00806200403FE03 Page 57 of 67 APPENDIX B: PHOTOGRAPHS OF EUT ALL VIEW OF EUT Report No.: AGC00806200403FE03 Page 58 of 67 TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC00806200403FE03 Page 59 of 67 FRONT VIEW OF EUT BACK VIEW OF EUT Report No.: AGC00806200403FE03 Page 60 of 67 LEFT VIEW OF EUT RIGHT VIEW OF EUT Report No.: AGC00806200403FE03 Page 61 of 67 OPEN VIEW OF EUT-right INTERNAL VIEW-1 OF EUT Report No.: AGC00806200403FE03 Page 62 of 67 INTERNAL VIEW-2 OF EUT INTERNAL VIEW-3 OF EUT Antenna Report No.: AGC00806200403FE03 Page 63 of 67 INTERNAL VIEW-4 OF EUT VIEW OF BATTERY Report No.: AGC00806200403FE03 Page 64 of 67 OPEN VIEW-1 OF EUT-left OPEN VIEW-2 OF EUT Report No.: AGC00806200403FE03 Page 65 of 67 INTERNAL VIEW-1 OF EUT INTERNAL VIEW-2 OF EUT Report No.: AGC00806200403FE03 Page 66 of 67 INTERNAL VIEW-3 OF EUT INTERNAL VIEW-4 OF EUT Antenna Report No.: AGC00806200403FE03 Page 67 of 67 VIEW OF BATTERY ----END OF REPORT----

Test Setup Photos RADIATED EMISSION TEST SETUP BELOW 1GHZ RADIATED EMISSION TEST SETUP ABOVE 1GHZ