2AC67-HS065UC Headset

Xiamen VBeT Electronic Co.,Ltd. N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC, Xiamen, China Tel: +86 13950190158 Email: [email protected] CFR 47 §2.911 (d)(5)(ii) Attestation Letter Attestation Letter Date: 2026-01-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: 2AC67-HS065 Xiamen VBeT Electronic Co.,Ltd. certifies that as of the date of the filing of the application, the applicant is notidentified on the Covered List as an entity producing “covered” equipment. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, Signature: Victor Fan CEO

Xiamen VBeT Electronics Co.,Ltd. Address: N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC, Xiamen, China Tel: +86 13950190158 Email: [email protected] Attestation Letter Date: 2026-01-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: The RF chip, model: QCC3084 installed in our product named as UC Headset, Model No.:VT NEXUS 65 , NEXUS 65,VT FLOW Link, FLOW Link,VT X520, X520,VT N6500, N6500, FCC ID: 2AC67-HS065,ZKLFKVXSSRUW%'5 *)6. ('5 ʌ- DQPSK, 8DPSK), and BLE functions. For use in America, this chip in this product only supports %'5 *)6. ('5 ʌ-DQPSK, 8DPSK). The BLE function has been shielded by the manufacturer by using the software, the end user has no capability to activate it. Sincerely, Signature Victor Fan CEO

Xiamen VBeT Electronic Co.,Ltd. N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC, Xiamen, China Tel: +86 13950190158 Email: [email protected] CFR 47 §2.911(d)(5)(i) Attestation Letter Attestation Letter Date: 2026-01-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: 2AC67-HS065 Xiamen VBeT Electronic Co.,Ltd. certifies that the equipment for which authorization is sought, is not“covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, Signature: Victor Fan CEO

Xiamen VBeT Electronic Co.,Ltd. N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC, Xiamen, China Tel: +86 13950190158 Email: [email protected] QA-FR-170-B7/29/2014 FCC Authorization Date: 2026-01-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We Xiamen VBeT Electronic Co.,Ltd., the undersigned, hereby authorizes Shenzhen Accurate Technology Co., Ltd. to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Shenzhen Accurate Technology Co., Ltd. on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Victor Fan CEO

Xiamen VBeT Electronic Co.,Ltd. N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC, Xiamen, China Tel: +86 13950190158 Email: [email protected] FCC Confidential Authorization Date: 2026-01-20 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2AC67-HS065 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Xiamen VBeT Electronic Co.,Ltd. hereby requests long-term confidential treatment of information accompanying this application as outlined below: xBlock Diagram xSchematics xOperation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature Victor Fan CEO

Shenzhen Accurate Technology Co., Ltd.

Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 1 / 24 External Photos Tested Model: VT NEXUS 65 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 2 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 3 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 4 / 24 Multiple Model: FLOW Link Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 5 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 6 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 7 / 24 Multiple Model: N6500 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 8 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 9 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 10 / 24 Multiple Model: NEXUS 65 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 11 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 12 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 13 / 24 Multiple Model: X520 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 14 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 15 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 16 / 24 Multiple Model:VT N6500 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 17 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 18 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 19 / 24 Multiple Model:VT X520 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 20 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 21 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 22 / 24 Multiple Model:VT FLOW Link Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 23 / 24 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT External Photos External Photos Page 24 / 24 ***** END *****

UC Headset Model: VT NEXUS 65 SN: N65005251100001 Made in China FCC ID: 2AC67-HS065

Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT Internal Photos Internal Photos Page 1 / 4 Internal Photos Tested Model: VT NEXUS 65 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT Internal Photos Internal Photos Page 2 / 4 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT Internal Photos Internal Photos Page 3 / 4 Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF EUT Internal Photos Internal Photos Page 4 / 4 ANT ***** END *****

Note: This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA, or any agency of the Federal Government. The information marked “#” is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included but no need marked. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Shenzhen Accurate Technology Co., Ltd. Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Tel: +86 755-26503290 Web: www.atc-lab.com Rev:A/4.0(2024/11/01) Page 1 of 6 TR-4-E-R063 TEST REPORT Applicant Name: Xiamen VBeT Electronics Co., Ltd. Address : N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC Report Number : 2504A02052E-RF FCC ID: 2AC67-HS065 Test Standard (s) 47 CFR §2.1093 Sample Description Product Name: UC Headset Model No.: VT NEXUS 65, NEXUS 65, VT N6500, N6500 VT FLOW Link, FLOW Link, VT X520, X520 Trade Mark: VT Date Received: 2025-12-17 Report Date: 2026-01-06 Test Result: The EUT complied with the standards above. Prepared and Checked By: Approved By: Jason Fan Bob.Liao EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: 2504A02052E-RF Rev:A/4.0(2024/11/01) Page 2 of 6 TR-4-E-R051 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ................................................................................................................ 3 GENERAL INFORMATION ............................................................................................................................ 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ........................................................................ 4 OBJECTIVE ................................................................................................................................................... 4 TEST FACILITY .............................................................................................................................................. 4 RF EXPOSURE .............................................................................................................................................. 5 APPLICABLE STANDARD ................................................................................................................................. 5 TEST RESULT ................................................................................................................................................ 5 EXHIBIT A-EUT PHOTOGRAPHS ................................................................................................................ 6 Shenzhen Accurate Technology Co., Ltd. Report No.: 2504A02052E-RF Rev:A/4.0(2024/11/01) Page 3 of 6 TR-4-E-R051 DOCUMENT REVISION HISTORY Revision Number Report Number Description of Revision Date of Revision Rev.00 2504A02052E-RF Original Report 2026-01-06 Shenzhen Accurate Technology Co., Ltd. Report No.: 2504A02052E-RF Rev:A/4.0(2024/11/01) Page 4 of 6 TR-4-E-R051 GENERAL INFORMATION Product Description for Equipment under Test (EUT) Product Name UC Headset Tested Model VT NEXUS 65 Multiple Model NEXUS 65, VT N6500, N6500 VT FLOW Link, FLOW Link, VT X520, X520 Model Difference # All listed models differ in model names, casing colors and silk-screen. Please refer to DOS letter and EUT photos for details. The applicant provided model “VT NEXUS 65” for testing. Frequency Range Bluetooth: 2402-2480MHz Maximum Conducted Output Power -0.81dBm Antenna Specification # Internal Antenna, Antenna gain: 4.3dBi (It is provided by the applicant.) Voltage Range # DC 5V from USB port Sample Serial Number 3EK3-3 (Assigned by ATC, Shenzhen) Sample/EUT Status Good condition Objective This test report is in accordance with Part 2-Subpart J, Part 15-Subparts C and Part 2-Subpart J, Radiofrequency Radiation Exposure of the Federal Communication Commission rules. The tests were performed in order to determine compliance with FCC §2.1093 rules. Test Facility The test site used by Shenzhen Accurate Technology Co., Ltd. to collect test data is located on the Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Accredited by American Association for Laboratory Accreditation (A2LA).The Certificate Number is 4297.01. Shenzhen Accurate Technology Co., Ltd. Report No.: 2504A02052E-RF Rev:A/4.0(2024/11/01) Page 5 of 6 TR-4-E-R051 RF EXPOSURE Applicable Standard According to FCC §2.1093, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. According to KDB 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 1. f(GHz) is the RF channel transmit frequency in GHz. 2. Power and distance are rounded to the nearest mW and mm before calculation. 3. The result is rounded to one decimal place for comparison. 4. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test Exclusion. Test result For worst case: Frequency (MHz) Tune-Up Conducted Output Power # (dBm) Tune-Up Conducted Output Power # (mW) Distance (mm) Calculated Value Threshold (1-g SAR) SAR Test Exclusion 2441 -0.8 0.83 5 0.3 3 Yes Note: …

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Note: This report must not be used by the customer to claim product certification, approval, or endorsement by A2LA, or any agency of the Federal Government. The information marked ―#‖ is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included but no need marked. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. Shenzhen Accurate Technology Co., Ltd. Floor 1, KuMaKe Building, Dongzhou Community, Guangming Street, Guangming District, Shenzhen, Guangdong, China. Tel: +86 755-26503290 Web: www.atc-lab.com Rev:A/4.0(2024/11/01) Page 1 of 78 TR-4-E-R014 TEST REPORT Applicant Name: Xiamen VBeT Electronics Co., Ltd. Address: N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC Report Number: 2504A02052E-RF-00A FCC ID: 2AC67-HS065 Test Standard (s) FCC PART 15.247 Sample Description Product Name: UC Headset Model No.: VT NEXUS 65, NEXUS 65, VT N6500, N6500 VT FLOW Link, FLOW Link, VT X520, X520 Trade Mark: VT Date Received: 2025-12-17 Report Date: 2026-01-06 Test Result: The EUT complied with the standards above. Prepared and Checked By: Approved By: Jason Fan Bob.Liao EMC Engineer EMC Engineer Shenzhen Accurate Technology Co., Ltd. Report No.: 2504A02052E-RF-00A Rev:A/4.0(2024/11/01) Page 2 of 78 TR-4-E-R014 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ................................................................................................................ 4 GENERAL INFORMATION ............................................................................................................................ 5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ........................................................................ 5 OBJECTIVE ................................................................................................................................................... 6 TEST METHODOLOGY .................................................................................................................................... 6 TEST FACILITY .............................................................................................................................................. 6 MEASUREMENT UNCERTAINTY ....................................................................................................................... 6 SYSTEM TEST CONFIGURATION ............................................................................................................... 7 DESCRIPTION OF TEST CONFIGURATION......................................................................................................... 7 EUT EXERCISE SOFTWARE AND POWER LEVEL # ............................................................................................ 7 SPECIAL ACCESSORIES ................................................................................................................................. 7 EQUIPMENT MODIFICATIONS .......................................................................................................................... 7 SUPPORT EQUIPMENT LIST AND DETAILS ....................................................................................................... 7 EXTERNAL I/O CABLE .................................................................................................................................... 7 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................. 8 SUMMARY OF TEST RESULTS ................................................................................................................. 10 TEST EQUIPMENT LIST ............................................................................................................................. 11 ANTENNA REQUIREMENT......................................................................................................................... 12 APPLICABLE STANDARD ............................................................................................................................... 12 ANTENNA CONNECTOR CONSTRUCTION ....................................................................................................... 12 AC LINE CONDUCTED EMISSIONS .......................................................................................................... 13 APPLICABLE STANDARD ............................................................................................................................... 13 EUT SETUP ................................................................................................................................................ 13 EMI TEST RECEIVER SETUP ........................................................................................................................ 13 TEST PROCEDURE ...................................................................................................................................... 13 CALCULATION ............................................................................................................................................. 14 TEST DATA ................................................................................................................................................. 14 RADIATED SPURIOUS EMISSIONS .......................................................................................................... 17 APPLICABLE STANDARD ............................................................................................................................... 17 EUT SET…

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Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF Test Photos Test Photos Page 1 / 3 Photo of Power Line Conducted Emission Measurement Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF Test Photos Test Photos Page 2 / 3 Radiated Spurious Emissions Test View (9kHz-30MHz) Radiated Spurious Emissions Test View (30MHz- 1GHz) Shenzhen Accurate Technology Co., Ltd. No.: 2504A02052E-RF Test Photos Test Photos Page 3 / 3 Radiated Spurious Emissions Test View (1-18GHz) Radiated Spurious Emissions Test View (18-25GHz) ***** END *****