2AO47-SORB-TWS3TWS earbuds

      

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 5 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 5 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 5 Fig.5 Fig.6 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 5 Fig.7 Fig.8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 5 of 5 Fig.9

Label Location: FCC ID: 2AO47-SORB-TWS3

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 Fig.3 Fig.4 Bluetooth Antenna Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Fig.5 Fig.6

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 3 RADIO FREQUENCY EXPOSURE Limit According to section B.4 of 447498 D04 Interim General RF Exposure Guidance v01 SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater. If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of λ/4. As for devices with antennas of length greater than λ/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known. The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna. The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW). This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Where and f is in GHz, d is the separation distance (cm), and ERP 20cm is per Formula (B.1). Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 3 The example values shown in Table B.2 are for illustration only. Frequency (MHz) Distance (mm) 5 10 15 20 25 30 35 40 45 50 300 39 65 88 110 129 148 166 184 201 217 450 22 44 67 89 112 135 158 180 203 226 835 9 25 44 66 90 116 145 175 207 240 1900 3 12 26 44 66 92 122 157 195 236 2450 3 10 22 38 59 83 111 143 179 219 3600 2 8 18 32 49 71 96 125 158 195 5800 1 6 14 25 40 58 80 106 136 169 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 3 Conducted Power Results Test Mode Channel Frequency (MHz) Measured Peak Output Power (dBm) GFSK 00 2402 -4.03 39 2441 -3.03 78 2480 -2.83 π/4-DQPSK 00 2402 -3.48 39 2441 -2.33 78 2480 -2.14 8-DPSK 00 2402 -2.79 39 2441 -1.6 78 2480 -1.44 Manufacturing tolerance GFSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -4.5 -3.5 -3.0 Tolerance ±(dB) 1.0 1.0 1.0 π/4-DQPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -3.5 -2.5 -2.5 Tolerance ±(dB) 1.0 1.0 1.0 8-DPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -3.0 -2.0 -1.5 Tolerance ±(dB) 1.0 1.0 1.0 Results Test Mode Channel Frequency (MHz) Max. Tune Up Power (dBm, Peak) Max. Eirp including Tune Up (dBm, Peak) Max. Eirp including Tune Up (mW, Peak) Exemption Limit (mW) GFSK 2402 -3.5 -1.82 0.66 3 2441 -2.5 -0.82 0.83 3 2480 -2.0 -0.32 0.93 3 π/4-DQPSK 2402 -2.5 -0.82 0.83 3 2441 -1.5 0.18 1.04 3 2480 -1.5 0.18 1.04 3 8-DPSK 2402 -2.0 -0.32 0.93 3 2441 -1.0 0.68 1.17 3 2480 -0.5 1.18 1.31 3 The antenna gain of the EUT for BT is 1.68dBi (Max). the Maximum Eirp is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. So, the SAR evaluation is not required.

Product specification Quick Reference Date Antenna module on the system board Frequenc Range 2400 ~ 2500MHz Ant. Port Input Pwr. (dBm) 0 (Typ. BT class 2 output power) Tot. Rad. Pwr. (dBm) -1.2 (Input pwr – loss pwr) Peak EIRP(dBm) 1.2 Directivity (dBi) 1 (all direction antenna) Efficiency (dB) 6 0.2 % Gain (dBi) 1.68 (Avg Gain XY-plane) Maximum Power (dBm) 1.7 (XY-plane) Minimum Power (dBm) -4(XY-plane) Avg. Power (dBm) -0.5(XY-plane) Input Impendence(ohm) 50 Polarization Type Vertical & Horizontal V . S .W . R < 1.4 All the technical data and information contained herein are subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Gain Table Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module Board 1.68-0.5 1.68-3.6 1.1 -3.0 6 0.2 % Retum Loss The Environment of Antenna Radiation Pattem 3D radiation pattern diagram XY-plane XZ-plane YZ-plane

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 1 of 43 Appendix Test Data for BT(BDR/EDR) (Conducted Measurement) Product Name: TWS earbuds Trade Mark: N/A Test Model: SORB-TWS3 FCC ID: 2AO47-SORB-TWS3 Environmental Conditions Temperature: 25.5C Relative Humidity: 55% ATM Pressure: 100.0 kPa Test Engineer: Anna Hu Supervised by: Hugo Chen NOTE N/A Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Channel 20db EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.891 2401.547 2402.438 --- --- 2441 0.891 2440.547 2441.438 --- --- 2480 0.864 2479.550 2480.414 --- --- 2DH5 Ant1 2402 1.305 2401.352 2402.657 --- --- 2441 1.308 2440.355 2441.663 --- --- 2480 1.314 2479.349 2480.663 --- --- 3DH5 Ant1 2402 1.290 2401.358 2402.648 --- --- 2441 1.302 2440.355 2441.657 --- --- 2480 1.290 2479.364 2480.654 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 2 of 43 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 2DH5_Ant1_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 3 of 43 2DH5_Ant1_2441 2DH5_Ant1_2480 3DH5_Ant1_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 4 of 43 3DH5_Ant1_2441 3DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 5 of 43 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Channel OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.80119 2401.6051 2402.4063 --- --- 2441 0.80395 2440.6015 2441.4055 --- --- 2480 0.80663 2479.6018 2480.4084 --- --- 2DH5 Ant1 2402 1.1588 2401.4248 2402.5836 --- --- 2441 1.1636 2440.4229 2441.5865 --- --- 2480 1.1575 2479.4249 2480.5824 --- --- 3DH5 Ant1 2402 1.1713 2401.4269 2402.5982 --- --- 2441 1.1598 2440.4288 2441.5886 --- --- 2480 1.1690 2479.4291 2480.5981 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 6 of 43 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 2DH5_Ant1_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 7 of 43 2DH5_Ant1_2441 2DH5_Ant1_2480 3DH5_Ant1_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 8 of 43 3DH5_Ant1_2441 3DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 9 of 43 Appendix C: Maximum Peak conducted output power Test Result TestMode Antenna Channel Result[dBm] Limit[dBm] Verdict DH5 Ant1 2402 -4.03 ≤30 PASS 2441 -3.03 ≤30 PASS 2480 -2.83 ≤30 PASS 2DH5 Ant1 2402 -3.48 ≤20.97 PASS 2441 -2.33 ≤20.97 PASS 2480 -2.14 ≤20.97 PASS 3DH5 Ant1 2402 -2.79 ≤20.97 PASS 2441 -1.6 ≤20.97 PASS 2480 -1.44 ≤20.97 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 10 of 43 Test Graphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 11 of 43 2DH5_Ant1_2402 2DH5_Ant1_2441 2DH5_Ant1_2480 3DH5_Ant1_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 12 of 43 3DH5_Ant1_2441 3DH5_Ant1_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 13 of 43 Appendix D: Carrier frequency separation Test Result TestMode Antenna Channel Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 1.172 ≥0.891 PASS 2DH5 Ant1 Hop 1.02 ≥0.876 PASS 3DH5 Ant1 Hop 1.004 ≥0.868 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 14 of 43 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 15 of 43 Appendix E: Time of occupancy Test Result TestMode Antenna Channel BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH5 Ant1 Hop 2.898 90 0.261 ≤0.4 PASS 2DH5 Ant1 Hop 2.904 110 0.319 ≤0.4 PASS 3DH5 Ant1 Hop 2.906 90 0.262 ≤0.4 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 16 of 43 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 17 of 43 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 18 of 43 Appendix F: Number of hopping channels Test Result TestMode Antenna Channel Result[Num] Limit[Num] Verdict DH5 Ant1 Hop 79 ≥15 PASS 2DH5 Ant1 Hop 79 ≥15 PASS 3DH5 Ant1 Hop 79 ≥15 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 19 of 43 Test Graphs DH5_Ant1_Hop 2DH5_Ant1_Hop 3DH5_Ant1_Hop Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 20 of 43 Appendix G: Band edge measurements Test Result TestMode Antenna ChName Channel RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -4.90 -50.47 ≤-24.9 PASS High 2480 -3.43 -49.46 ≤-23.43 PASS Low Hop_2402 -5.56 -50.47 ≤-25.56 PASS High Hop_2480 -3.79 -49.5 ≤-23.79 PASS 2DH5 Ant1 Low 2402 -4.79 -49.54 ≤-24.79 PASS High 2480 -4.08 -48.16 ≤-24.08 PASS Low Hop_2402 -6.31 -50.39 ≤-26.31 PASS High Hop_2480 -7.25 -49.51 ≤-27.25 PASS 3DH5 Ant1 Low 2402 -4.76 -50.32 ≤-24.76 PASS High 2480 -3.49 -49.14 ≤-23.49 PASS Low Hop_2402 -10.12 -50.27 ≤-30.12 PASS High Hop_2480 -4.23 -49.72 ≤-24.23 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 21 of 43 Test Graphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 DH5_Ant1_High_Hop_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 22 of 43 2DH5_Ant1_Low_2402 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230604430-E Page 23 of 43 2DH5_Ant1_High_Hop_2480 3DH5_Ant1_Low_2402 3DH5_Ant1_High_2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 Report No.: TZ230…

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Report No.: TZ230604430-E Page 1 of 38 FCC TEST REPORT Test report On Behalf of Shenzhen Kingstar Industrial Co.,Ltd. For TWS earbuds Model No: SORB-TWS3, FI-AUP230PCO FCC ID: 2AO47-SORB-TWS3 Prepared for : Shenzhen Kingstar Industrial Co.,Ltd. Room 211, Min Le technology Building, Meiban Road, LongHua District, Shenzhen, China Prepared By : Shenzhen Tongzhou Testing Co.,Ltd 1th Floor, Building 1, Haomai High-tech Park, Huating Road 387, Dalang Street, Longhua, Shenzhen, China Date of Test: 2023/6/6 – 2023/6/12 Date of Report: 2023/6/26 Report Number: TZ230604430-E The test report apply only to the specific sample(s) tested under stated test conditions It is not permitted to copy extracts of these test result without the written permission of the test laboratory. Report No.: TZ230604430-E Page 2 of 38 TEST RESULT CERTIFICATION Applicant’s name ................. : Shenzhen Kingstar Industrial Co.,Ltd. Address .................................. : Room 211, Min Le technology Building, Meiban Road, LongHua District, Shenzhen, China Manufacture's Name ............ : Shenzhen Kingstar Industrial Co.,Ltd. Address .................................. : Room 211, Min Le technology Building, Meiban Road, LongHua District, Shenzhen, China Product description Trade Mark ............................. : N/A Product name ........................... : TWS earbuds Model No ................................ : SORB-TWS3, FI-AUP230PCO Standards ............................. : FCC Rules and Regulations Part 15 Subpart C Section 15.247 ANSI C63.10: 2013 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen Tongzhou Testing Co.,Ltd is acknowledged as copyright owner and source of the material. Shenzhen Tongzhou Testing Co.,Ltd takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test ............................. ........... : Date (s) of performance of tests ........... : 2023/6/6-2023/6/12 Date of Issue ......................................... : 2023/6/26 Test Result ............................................ : PASS Testing Engineer : (Nancy Li) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ230604430-E Page 3 of 38 Revision History Revision Issue Date Revisions Revised By 00 2023/6/26 Initial Issue Andy Zhang Report No.: TZ230604430-E Page 4 of 38 TABLE OF CONTENTS Description Page 1. GENERAL INFORMATION ................................................................................................................ 5 1.1. Description of Device (EUT) ................................................................................................................... 5 1.2 Support equipment List ................................................................................................................................ 5 1.3 EUT configuration ......................................................................................................................................... 5 The following peripheral devices and interface cables were connected during the measurement: ....... 5 1.4 External I/O Cable ........................................................................................................................................ 5 1.5 Description of Test Facility .......................................................................................................................... 6 1.6 Statement of the Measurement Uncertainty ............................................................................................. 7 1.7 Measurement Uncertainty ........................................................................................................................... 7 1.8 Description of Test Modes .......................................................................................................................... 7 2. TEST METHODOLOGY ...................................................................................................................... 8 2.1 EUT Configuration ........................................................................................................................................ 8 2.2 EUT Exercise ................................................................................................................................................ 8 2.3 General Test Procedures ............................................................................................................................ 8 2.4. Test Sample ................................................................................................................................................. 8 3. SYSTEM TEST CONFIGURATION .................................................................................................. 9 3.1 Justification .................................................................................................................................................... 9 3.2 EUT Exercise Software ............................................................................................................................... 9 3.3 Special Accessories ..................................................................................................................................... 9 3.4 Block Diagram/Schematics ......................................................................................................................... 9 3.5 Equipment Modifications ............................................................................................................................. 9 3.6 Test Setup ..................................................................................................................................................... 9 4. SUMMARY OF TEST RESULTS ..............................................................................................…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 2 TEST SETUP PHOTOS OF THE EUT Radiated Emission Below 1GHz Radiated Emission Above 1GHz Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2AO47-SORB-TWS3 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Conducted Emission