2A6SW-NT18BWireless Headphones

SMARTSOUND TECHNOLOGY CO., LTD Agent Authorization Company: SMARTSOUND TECHNOLOGY CO., LTD Address: Room 701, 28 Xinhong Road, Lincun, Tangxia Town, Dongguan City, Guangdong, China Product Name: Wireless Headphones Model Number(s): NT18B, T3 Product Description: Wireless Headphones 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: 2022-08-11 Name: Yulan Wen Company: SMARTSOUND TECHNOLOGY CO., LTD

Report No.: AGC13967220701AP02 Page 1 of 4 EXTERNAL PHOTOS WHOLE VIEW OF EUT-1 WHOLE VIEW OF EUT-2 Report No.: AGC13967220701AP02 Page 2 of 4 TOP VIEW OF EUT BOTTOM VIEW OF EUT Report No.: AGC13967220701AP02 Page 3 of 4 FRONT VIEW OF EUT BACK VIEW OF EUT Report No.: AGC13967220701AP02 Page 4 of 4 LEFT VIEW OF EUT RIGHT VIEW OF EUT ****************************************End of Report****************************************

FCC ID Label Location The product does not have enough space to place the label, and FCC ID label is reflected in the user manual and package, as below:

Report No.: AGC13967220701AP02 Page 1 of 7 INTERNAL PHOTOS Left-VIEW OF EUT(PORT) OPEN VIEW OF EUT Report No.: AGC13967220701AP02 Page 2 of 7 VIEW OF BATTERY INTERNAL VIEW OF EUT-1 BT Antenna Report No.: AGC13967220701AP02 Page 3 of 7 INTERNAL VIEW OF EUT-2 INTERNAL VIEW OF EUT-3 Report No.: AGC13967220701AP02 Page 4 of 7 INTERNAL VIEW OF EUT-4 Right-VIEW OF EUT(PORT) Report No.: AGC13967220701AP02 Page 5 of 7 OPEN VIEW OF EUT VIEW OF BATTERY Report No.: AGC13967220701AP02 Page 6 of 7 INTERNAL VIEW OF EUT-1 INTERNAL VIEW OF EUT-2 BT Antenna Report No.: AGC13967220701AP02 Page 7 of 7 INTERNAL VIEW OF EUT-3 INTERNAL VIEW OF EUT-4 ****************************************End of Report****************************************

RF EXPOSURE EVALUATION 1. PRODUCT INFORMATION Product Description Wireless Headphones Model Name NT18B Series Model T3 FCC ID 2A6SW-NT18B 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 BR&EDR: P t =2.141dBm=1.64mW 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=(1.64mW / 5mm).[√2.480GHz)]=0.515<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 65 FCC Test Report Report No.: AGC13967220701FE03 FCC ID : 2A6SW-NT18B APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Wireless Headphones BRAND NAME : N/A MODEL NAME : NT18B, T3 APPLICANT : SMARTSOUND TECHNOLOGY CO., LTD DATE OF ISSUE : Aug. 09, 2022 STANDARD(S) : FCC Part 15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC13967220701FE03 Page 2 of 65 REPORT REVISE RECORD Report Version Revise Time Issued Date Valid Version Notes V1.0 / Aug. 09, 2022 Valid Initial Release Report No.: AGC13967220701FE03 Page 3 of 65 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 ........................................................................................................................................ 19 8.1. MEASUREMENT PROCEDURE ............................................................................................................. 19 8.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 19 8.3. LIMITS AND MEASUREMENT RESULTS ............................................................................................... 20 9. CONDUCTED SPURIOUS EMISSION........................................................................................................... 25 9.1. MEASUREMENT PROCEDURE ............................................................................................................. 25 Report No.: AGC13967220701FE03 Page 4 of 65 9.2. TEST SET-UP (BLOCK DIAGRAM OF CONFIGURATION) .................................................................... 25 9.3. MEASUREMENT EQUIPMENT USED .................................................................................................... 25 9.4. LIMITS AND MEASUREMENT RESULT .................................................................................................. 25 10. RADIATED EMISSION ................................................................................................................................. 46 10.1. MEASUREMENT PROCEDURE ........................................................................................................... 46 10.2. TEST SETUP ......................................................................................................................................... 48 10.3. LIMITS AND MEASUREMENT RESULT ............................................................................................... 49 10.4. TEST RESULT........................................................................................................................................ 49 11. NUMBER OF HOPPING FREQUENCY .........................................................................…

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Report No.: AGC13967220701FE03 Page 60 of 65 12. TIME OF OCCUPANCY (DWELL TIME) 12.1. MEASUREMENT PROCEDURE The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: Zero span, centered on a hopping channel. 2. RBW shall be≤channel spacing and where possible RBW should be set >> 1 / T, where T is the expected dwell time per channel. 3. Sweep: As necessary to capture the entire dwell time per hopping channel; where possible use a video trigger and trigger delay so that the transmitted signal starts a little to the right of the start of the plot. The trigger level might need slight adjustment to prevent triggering when the system hops on an adjacent channel; a second plot might be needed with a longer sweep time to show two successive hops on a channel. 4. Detector function: Peak. Trace: Max hold. 5. Use the marker-delta function to determine the transmit time per hop. 6. Repeat the measurement using a longer sweep time to determine the number of hops over the period specified in the requirements. The sweep time shall be equal to, or less than, the period specified in the requirements. Determine the number of hops over the sweep time and calculate the total number of hops in the period specified in the requirements, using the following equation: (Number of hops in the period specified in the requirements) = (number of hops on spectrum analyzer) × (period specified in the requirements / analyzer sweep time) 7. The average time of occupancy is calculated from the transmit time per hop multiplied by the number of hops in the period specified in the requirements. 12.2. TEST SETUP (BLOCK DIAGRAM OF CONFIGURATION) Same as described in section 8.2 12.3. MEASUREMENT EQUIPMENT USED The same as described in section 6 12.4. LIMITS AND MEASUREMENT RESULT Test Data of Dwell Time Channel Time of Pulse for DH5 (ms) Number of hops in the period specified in the requirements Sweep Time (ms) Limit (ms) Pass or Fail 2402 2.877 26.0*4 299.208 400 Pass 2441 2.877 27.0*4 310.716 400 Pass 2480 2.878 27.0*4 310.824 400 Pass Note: The GFSK modulation is the worst case and recorded in the report. Report No.: AGC13967220701FE03 Page 61 of 65 Test Graphs of Dwell Time Test_Graph_BR_HOP_ANT1_NA_1Mbps_2402_Number of Busrt Test_Graph_BR_HOP_ANT1_NA_1Mbps_2402_Time per Burst Report No.: AGC13967220701FE03 Page 62 of 65 Test_Graph_BR_HOP_ANT1_NA_1Mbps_2441_Number of Busrt Test_Graph_BR_HOP_ANT1_NA_1Mbps_2441_Time per Burst Report No.: AGC13967220701FE03 Page 63 of 65 Test_Graph_BR_HOP_ANT1_NA_1Mbps_2480_Number of Busrt Test_Graph_BR_HOP_ANT1_NA_1Mbps_2480_Time per Burst Report No.: AGC13967220701FE03 Page 64 of 65 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 Data of Frequency Separation Test Mode Channel Separation (MHz) Limits Pass or Fail GFSK Hopping 0.981 >= 2/3 -20dB BW Pass Test Graphs of Number of Hopping Frequency Test_Graph_BR_HOP_ANT1_NA_1Mbps_Hopping Separation Note: The GFSK modulation is the worst case and recorded in the report. Report No.: AGC13967220701FE03 Page 65 of 65 APPENDIX A: PHOTOGRAPHS OF TEST SETUP Refer to the Report No.: AGC13967220701AP01 APPENDIX B: PHOTOGRAPHS OF EUT Refer to the Report No.: AGC13967220701AP02 ----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 consent of the Company. The Clients to whom the Report is issued may, however, show or send it, or a certified copy thereof prepared by the Company to its customer, supplier or other persons directly concerned. The Company will not, without the consent of the Clients, enter into any discussion or correspondence with any third party concerning the contents of the Report, unless required by the relevant governmental authorities, laws or court orders. 3.The Company shall not be called or be liable to be called to give evidence or testimony on the Report in a court of law without its prior written consent, unless required by the relevant governmental authorities, laws or court orders. 4. In the event of the improper use of the report as determined by the Company, the Company reserves the right to withdraw it, and to adopt any other additional remedies which may be appropriate. 5. Samples submitted for testing are accepted on the understanding that the Report issued cannot form the basis of, or be the instrument for, any legal action against the Company. 6. The Company will not be liable for or accept responsibility for any loss or damage however arising from the use of information contained i…

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Report No.: AGC13967220701AP01 Page 1 of 2 TEST SETUP PHOTOS RADIATED EMISSION TEST SETUP BELOW 1GHz RADIATED EMISSION TEST SETUP ABOVE 1GHz Report No.: AGC13967220701AP01 Page 2 of 2 RF CONDUCTED TEST SETUP ****************************************End of Report*************************************