2BFD9-GT46TWS Bluetooth headset

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter. Radiation Exposure Statement The device has been evaluated to meet general RF exposure requirement in portable exposure condition without restriction.

Meizhou Shengjian Acoustic Technology Co., Ltd No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-6-19 To whom it may concern: We, Meizhou Shengjian Acoustic Technology Co., Ltd, hereby certify that the equipment for which authorization is sought (FCC ID: 2BFD9-GT46) is not “covered” equipment prohibited from receiving an equipment authorization pursuant to § 2.903 of the FCC rules. We also certify that, as of the date of the filing of the application, we are not identified on the Covered List (https://www.fcc.gov/supplychain/coveredlist) as an entity producing “covered” equipment. By signing this form, we confirm the above and that we are aware of the application requirements listed under § 2.911(b) and (d)(5) and (6). The information provided in this letter is based on the referenced rule parts of Title 47 of the CFR as well as KDB 986446 D01. Sincerely, Signature Chaodong Wu Certification Contact Meizhou Shengjian Acoustic Technology Co., Ltd 62_[model] CoveredEqu_2.911(d)(5)(i) and (ii) - U, V03

Meizhou Shengjian Acoustic Technology Co., Ltd Add: No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Date: 2024-6-19 FCC ID: 2BFD9-GT46 Dear Sir/Madam, We, Meizhou Shengjian Acoustic Technology Co., Ltd Hereby declares the following statement for Federal Communications Commission, PCB board, circuit, structure and internal of these model(s) are the same, Only model number is different for these model: Product name: TWS Bluetooth headset Model no.: GT-46, GT-48, GT-50, GT-56, GT-58, GT-60, GT-66, GT-68 Sincerely, Name/Title： Chaodong Wu/Certification Contact Company: Meizhou Shengjian Acoustic Technology Co., Ltd Address: No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Phone: 8615322233968 Fax: 8615322233968 E-Mail: [email protected]

CONFIDENTIALITY REQUEST for Certification Service in USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date:<2024-6-19> Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we requests confidentiality for the following products: FCC ID Model name 2BFD9-GT46 GT-46 For the product stated above, we request that the following information be held confidential; Exhibits Long-Term Confidentiality Short-Term Confidentiality Short-Term Confidentiality Days External Photos Internal Photos Block Diagram Schematics Test Setup Photos User’s Manual Parts List Tune Up Operational Descriptions The long-term confidentiality exhibits contain our trade secrets and proprietary information that could be of benefit to our competitors. The short-term confidentiality on the basis of ensuring that business sensitive information remains confidential until the actual marketing of our new device. If you have any questions, please feel free to contact me at the address shown below. Sincerely, Name/Title： Chaodong Wu/Certification Contact Company: Meizhou Shengjian Acoustic Technology Co., Ltd Address: No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Phone: 8615322233968 Fax: 8615322233968 E-Mail: [email protected]

Meizhou Shengjian Acoustic Technology Co., Ltd No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Federal Communications Commission Authorization and Evaluation Division Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MD 21046 2024-6-19 To whom it may concern: We, the undersigned, hereby authorize Eurofins Product Service GmbH to act on our behalf in all matters relating to applications for equipment authorization FCC ID: 2BFD9-GT46 including the signing of all documents related to these matters. Any and all acts carried out by Eurofins Product Service GmbH on our behalf shall have the same effect as acts of our own. By signing this application form, we agree to Eurofins’ current valid General Terms and Conditions (AGB),Testing and Certification Regulations (PZO) which can be viewed on following website www.eurofins.de/ee or retrieved on request. We also hereby certify that no party to this application is subject to a denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Sincerely, Name/Title： Chaodong Wu/Certification Contact Company: Meizhou Shengjian Acoustic Technology Co., Ltd Address: No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Phone: 8615322233968 Fax: 8615322233968 E-Mail: [email protected]

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 4 EXTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 4 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 4 Fig.5 Fig.6 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 4 Fig.7 Fig.8

Label Location: FCC ID: 2BFD9-GT46

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 1 of 6 INTERIOR PHOTOGRAPHS OF EUT Fig.1 Fig.2 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 6 Fig.3 Fig.4 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 3 of 6 Fig.5 Fig.6 Bluetooth Antenna Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 4 of 6 Fig.7 Fig.8 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 5 of 6 Fig.9 Fig.10 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 6 of 6 Fig.11 Fig.12 Bluetooth Antenna

Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 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: 2BFD9-GT46 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: 2BFD9-GT46 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 Antenna Frequency[MHz] Result[dBm] DH5 Ant1 2402 -2.61 DH5 Ant1 2441 -2.75 DH5 Ant1 2480 -3.59 2DH5 Ant1 2402 -2.36 2DH5 Ant1 2441 -2.52 2DH5 Ant1 2480 -3.34 3DH5 Ant1 2402 -1.89 3DH5 Ant1 2441 -1.92 3DH5 Ant1 2480 -2.83 Manufacturing tolerance GFSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -3.0 -3.0 -4.0 Tolerance ±(dB) 1 1 1 π/4-DQPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -3 -3 -4 Tolerance ±(dB) 1 1 1 8-DPSK (Peak) Channel Channel 0 Channel 39 Channel 78 Target (dBm) -2.5 -2.5 -3.5 Tolerance ±(dB) 1 1 1 Results Test Mode Max Conducted Tune Up Power(dBm) Max of ERP and Conducted Power including Tune Up (dBm) Max of ERP and Conducted Power including Tune Up (mW) Exemption Limit(mW) GFSK -2 -2.00 0.63 3 π/4-DQPSK -2 -2.00 0.63 3 8DPSK -1.5 -1.50 0.71 3 Max of ERP and Conducted Power including Tune Up (dBm) = Max Conducted Tune Up Power(dBm) and Max Conducted Tune Up Power(dBm) + Antenna Gain(dBi)-2.15), whichever is greater. The antenna gain of the EUT for BT is 0 dBi (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 Model: N/A Manufacturer: Shenzhen Yunchuang Century Technology Co., Ltd. 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) Directivity (dBi) 1 (all direction antenna) Efficiency (dB) 6 0.2 % Gain (dBi) 0dBi (Peak Gain) 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 XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module Board 0.0 -1.5 -0.9 -6.6 -2.5 -6.1 60.2 % 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: 2BFD9-GT46 Report No.: TZ240505754-BT Page 1 of 38 Appendix Test Data for BT(BDR/EDR) (Conducted Measurement) Product Name: TWS Bluetooth headset Trade Mark: N/A Test Model: GT-46 FCC ID: 2BFD9-GT46 Environmental Conditions Temperature: 23.8°C Relative Humidity: 58% ATM Pressure: 100.0 kPa Test Engineer: Allen Lai Supervised by: Hugo Chen NOTE N/A Appendix A: 20dB Emission Bandwidth Test Result TestMode Antenna Frequency[MHz] 20db EBW[MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 1.029 2401.484 2402.513 --- --- DH5 Ant1 2441 0.960 2440.550 2441.510 --- --- DH5 Ant1 2480 0.960 2479.550 2480.510 --- --- 2DH5 Ant1 2402 1.311 2401.358 2402.669 --- --- 2DH5 Ant1 2441 1.314 2440.355 2441.669 --- --- 2DH5 Ant1 2480 1.314 2479.358 2480.672 --- --- 3DH5 Ant1 2402 1.320 2401.358 2402.678 --- --- 3DH5 Ant1 2441 1.290 2440.367 2441.657 --- --- 3DH5 Ant1 2480 1.299 2479.364 2480.663 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 2 of 38 Test Graphs DH5-Ant1-2402 DH5-Ant1-2441 DH5-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 3 of 38 2DH5-Ant1-2402 2DH5-Ant1-2441 2DH5-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 4 of 38 3DH5-Ant1-2402 3DH5-Ant1-2441 3DH5-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 5 of 38 Appendix B: Occupied Channel Bandwidth Test Result TestMode Antenna Frequency[MHz] OCB [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict DH5 Ant1 2402 0.88605 2401.5771 2402.4632 --- --- DH5 Ant1 2441 0.87791 2440.5795 2441.4574 --- --- DH5 Ant1 2480 0.87709 2479.5778 2480.4549 --- --- 2DH5 Ant1 2402 1.1726 2401.4277 2402.6003 --- --- 2DH5 Ant1 2441 1.1819 2440.4219 2441.6038 --- --- 2DH5 Ant1 2480 1.1881 2479.4206 2480.6087 --- --- 3DH5 Ant1 2402 1.1999 2401.4136 2402.6135 --- --- 3DH5 Ant1 2441 1.1805 2440.4242 2441.6047 --- --- 3DH5 Ant1 2480 1.1954 2479.4161 2480.6115 --- --- Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 6 of 38 Test Graphs DH5-Ant1-2402 DH5-Ant1-2441 DH5-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 7 of 38 2DH5-Ant1-2402 2DH5-Ant1-2441 2DH5-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 8 of 38 3DH5-Ant1-2402 3DH5-Ant1-2441 3DH5-Ant1-2480 Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 9 of 38 Appendix C: Maximum peak conducted output power Test Result Test Mode Antenna Frequency[MHz] Conducted Peak Power[dBm] Conducted Limit[dBm] Verdict DH5 Ant1 2402 -2.61 ≤20.97 PASS DH5 Ant1 2441 -2.75 ≤20.97 PASS DH5 Ant1 2480 -3.59 ≤20.97 PASS 2DH5 Ant1 2402 -2.36 ≤20.97 PASS 2DH5 Ant1 2441 -2.52 ≤20.97 PASS 2DH5 Ant1 2480 -3.34 ≤20.97 PASS 3DH5 Ant1 2402 -1.89 ≤20.97 PASS 3DH5 Ant1 2441 -1.92 ≤20.97 PASS 3DH5 Ant1 2480 -2.83 ≤20.97 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 10 of 38 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2441-PASS DH5-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 11 of 38 2DH5-Ant1-2402-PASS 2DH5-Ant1-2441-PASS 2DH5-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 12 of 38 3DH5-Ant1-2402-PASS 3DH5-Ant1-2441-PASS 3DH5-Ant1-2480-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 13 of 38 Appendix D: Carrier frequency separation Test Result TestMode Antenna Frequency[MHz] Result[MHz] Limit[MHz] Verdict DH5 Ant1 Hop 1.004 ≥0.686 PASS 2DH5 Ant1 Hop 1.012 ≥0.876 PASS 3DH5 Ant1 Hop 1.148 ≥0.880 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 14 of 38 Test Graphs DH5-Ant1-Hop-PASS 2DH5-Ant1-Hop-PASS 3DH5-Ant1-Hop-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 15 of 38 Appendix E: Time of occupancy Test Result TestMode Antenna Frequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s] Limit[s] Verdict DH5 Ant1 Hop 2.885 60 0.173 ≤0.4 PASS 2DH5 Ant1 Hop 2.891 100 0.289 ≤0.4 PASS 3DH5 Ant1 Hop 2.892 120 0.347 ≤0.4 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 16 of 38 Test Graphs DH5-Ant1-Hop-PASS 2DH5-Ant1-Hop-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 17 of 38 3DH5-Ant1-Hop-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 18 of 38 Appendix F: Number of hopping channels Test Result TestMode Antenna Frequency[MHz] 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: 2BFD9-GT46 Report No.: TZ240505754-BT Page 19 of 38 Test Graphs DH5-Ant1-Hop-PASS 2DH5-Ant1-Hop-PASS 3DH5-Ant1-Hop-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 20 of 38 Appendix G: Band edge measurements Test Result TestMode Antenna ChName Frequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5 Ant1 Low 2402 -2.98 -50.21 ≤-22.98 PASS DH5 Ant1 High 2480 -4.21 -49.28 ≤-24.21 PASS DH5 Ant1 Low Hop_2402 -4.14 -49.94 ≤-24.14 PASS DH5 Ant1 High Hop_2480 -4.04 -48.94 ≤-24.04 PASS 2DH5 Ant1 Low 2402 -3.90 -50 ≤-23.9 PASS 2DH5 Ant1 High 2480 -5.02 -49.4 ≤-25.02 PASS 2DH5 Ant1 Low Hop_2402 -7.57 -50.75 ≤-27.57 PASS 2DH5 Ant1 High Hop_2480 -4.48 -49.02 ≤-24.48 PASS 3DH5 Ant1 Low 2402 -4.58 -50.55 ≤-24.58 PASS 3DH5 Ant1 High 2480 -5.82 -49.81 ≤-25.82 PASS 3DH5 Ant1 Low Hop_2402 -6.15 -50.08 ≤-26.15 PASS 3DH5 Ant1 High Hop_2480 -5.31 -48.83 ≤-25.31 PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: TZ240505754-BT Page 21 of 38 Test Graphs DH5-Ant1-2402-PASS DH5-Ant1-2480-PASS DH5-Ant1-Hop_2402-PASS Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 Report No.: …

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Report No.: TZ240505754-BT Page 1 of 37 FCC TEST REPORT Test report On Behalf of Meizhou Shengjian Acoustic Technology Co., Ltd For TWS Bluetooth headset Model No.: GT-46, GT-48, GT-50, GT-56, GT-58, GT-60, GT-66, GT-68 FCC ID: 2BFD9-GT46 Prepared for : Meizhou Shengjian Acoustic Technology Co., Ltd No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, 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: 2024/5/28 ~ 2024/5/28 Date of Report: 2024/6/7 Report Number: TZ240505754-BT 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.: TZ240505754-BT Page 2 of 37 TEST RESULT CERTIFICATION Applicant’s name ................. : Meizhou Shengjian Acoustic Technology Co., Ltd Address ................................. : No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Manufacture's Name ............ : Meizhou Shengjian Acoustic Technology Co., Ltd Address ................................. : No.1, Eyi Village Committee, Ningzhong Town, Xingning City, Guangdong Province, China Product description Trade Mark ................................ : N/A Product name ............................ : TWS Bluetooth headset Model and/or type reference : GT-46, GT-48, GT-50, GT-56, GT-58, GT-60, GT-66, GT-68 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 ............. : 2024/5/28 ~ 2024/5/28 Date of Issue .......................................... : 2024/6/7 Test Result ............................................. : Pass Testing Engineer : (Allen Lai) Technical Manager : (Hugo Chen) Authorized Signatory : (Andy Zhang) Report No.: TZ240505754-BT Page 3 of 37 Revision History Revision Issue Date Revisions Revised By 00 2024/6/7 Initial Issue Andy Zhang Report No.: TZ240505754-BT Page 4 of 37 TABLE OF CONTENTS 1 GENERAL INFORMATION ................................................................................................ 5 1.1 Description of Device (EUT) ................................................................................................... 5 1.2 Wireless Function Tested in this Report ................................................................................. 5 1.3 EUT configuration ................................................................................................................... 6 1.4 Description of Test Facility ...................................................................................................... 6 1.5 Statement of the Measurement Uncertainty ............................................................................ 6 1.6 Measurement Uncertainty ....................................................................................................... 7 1.7 Description of Test Modes ...................................................................................................... 7 1.8 Frequency of Channels........................................................................................................... 7 2 TEST METHODOLOGY ..................................................................................................... 8 2.1 EUT Configuration .................................................................................................................. 8 2.2 EUT Exercise ......................................................................................................................... 8 2.3 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 ...................................................................................... 10 5 MEASUREMENT RESULTS ............................................................................................ 11 5.1 Maximum Peak Conducted Output Power ............................................................................ 11 5.2 Frequency Separation and 20 dB Bandwidth ........................................................................ 12 5.3 Number of Hopping Frequency ............................................................................................. 13 5.4 Time of Occupancy (Dwell Time) ...........................................................…

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Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 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 Conducted Emission Radiated Emission Below 1GHz Shenzhen Tongzhou Testing Co.,Ltd FCC ID: 2BFD9-GT46 This report shall not be reproduced except in full, without the written approval of Shenzhen Tongzhou Testing Co.,Ltd Page 2 of 2 Radiated Emission Above 1GHz