2AC67-HS034UC Headset

Safety For your own safety, this product should only be used with CE and RoHS approved equipment. Using this headset with non approved equipment can void this product warranty. 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. NOTE 1: 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. NOTE 2: Any 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.   VT NEXUS 34 Duo User Manual Ear Cushion Removal To remove the earmuff, rotate it counterclockwise and pull it off. After cleaning or replacement, align it with the designated position on the earcup and rotate it clockwise until you hear a "click," which confirms it is properly seated Maintenance The ear cushions can be removed for cleaning or replacement. How to Wear the Headset Expand or contract the headband until it feels comfortable and secure. The ideal fit should exert little to no pressure on your ears. For clear, crisp audio and to prevent low or distorted sound, position the microphone 20-30 mm from the corner of your mouth. The flexible boom arm can be adjusted in multiple directions to achieve the perfect position. Use the included clothing clip to secure the cable. Fasten it at a comfortable height, ensuring there is enough slack in the cable to allow natural head movement without pulling on or displacing the headset. To switch sides, rotate the microphone boom over the headband to wear the headset on your left or right ear. The headset is compatible with leading UC Platforms, including Microsoft Teams, Cisco Jabber, Avaya Workplace, Linkus, MicroSIP,etc. Dual-microphone ENC technology filters out background noise for crystal-clear calls. Compatibility & Feature Wearing Your Headset VT NEXUS 34 Duo Headset 1 Headset Components 1.Connect your Headset to an available USB A or USB C port on your PC. 2. Make sure the headset is set as the default audio device in your system's sound settings. 3. Refer to your softphone application's user guide to check if additional audio settings are required for headset use. Connection 1 3 2 4 Xiamen VBeT Electronics Co.,Ltd Add: Unit 701-702, Building #1,No.4 Xingqi Road , Tongxiang High-tech City, Xiamen Torch Hi-tech Industrial Development Zone. Xiamen, Fujian, China P.C 36110 Tel : +86-592-5778728 Fax: +86-592-5778708 E-mail: [email protected] Web: www.vbetglobal.com FCC Warning 3 4 8 10 9 7 6 1. Mute-microphone 2. Volume control button 3. Hook On/Off Key 4. Ringtone speaker (with on/off switch) Auto Mute: The microphone is automatically muted when you flip the boom arm up to the stowed position against the headband. 11 13 5 USB06 USB04 2 1 2 12 Headset Components 8 Secondary microphone 1 9 Clothing clip 10 Cable 11 USB 06 Controller (VT NEXUS 34/36) 12 USB 04 Controller (VT NEXUS 34 Lite) 13 Type A and Type C 1 Primary microphone 2 Secondary microphone 2 (Only for VT NEXUS 36) 3 Flex boom 4 Ear cushion 5 Wideband Speaker 6 Headband 7 Busylight

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 AttestationLetter Date:2026-03-02 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-HS034 Xiamen VBeT Electronic Co.,Ltd. certifies that the equipment for which authorization is sought, isnot “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] CFR 47 §2.911 (d)(5)(ii) Attestation Letter AttestationLetter Date: 2026-03-02 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-HS034 Xiamen VBeT Electronic Co.,Ltd. certifies that as of the date of the filingof the application, the applicantisnotidentified 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

U.S. AGENT LETTER OF ATTESTATION Date: 2026-03-02 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2AC67-HS034 Xiamen VBeT Electronic Co., Ltd. certifies that, as of the date of the filing of the application, Iconsigh Inc. is our designated U.S. agent for service of process for the above referenced FCC ID. Xiamen VBeT Electronic Co., Ltd. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Iconsigh Inc. accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Company Name: Iconsigh Inc. Address: 2310 Homestead Road, Suite C1, Los Altos, CA, 94024, USA FRN: 0033398652 Tel.: +1 (408) 320-9867 Email: [email protected] Signed by (printed name): Benjamin Kaur Signature: Xiamen VBeT Electronic Co., Ltd. Add: N403,Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, Xiamen,China FRN: 0023925902 Tel: +8613950190158 Mail:[email protected] Printed name: Victor Fan Signature

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 FCCAuthorization Date: 2026-03-02 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 Bay Area Compliance Labs Corp.(Shenzhen) 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 Bay Area Compliance Labs Corp.(Shenzhen) 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: 2026-03-02 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-HS034 In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Xiamen VBeT Electronic Co.,Ltd. hereby requests long-term confidentialtreatment of information accompanying this application as outlined below: Block Diagram Schematics Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials providesunjustified benefits to its competitors in the market. 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] Date: 2026-03-02 Product Difference Declaration To whom it may concern: Dear Sir/Madam, We, Xiamen VBeT Electronics Co., Ltd., hereby declare that we have a product named UC Headset (Model: VT NEXUS 34 Duo), which was tested by Bay Area Compliance Laboratories Corp. (Shenzhen). For marketing purposes, we would like to list the following series models on the reports and certificate: NEXUS 34 Duo, VT N3400 Duo, N3400 Duo,VT NEXUS 34,NEXUS 34 ,VT N3400, N3400. All listed models are electrically identical, with differences in model names and distribution chains, except the differences shown in the following table: Model two speakers one speakers VT NEXUS 34 Duo,NEXUS 34 Duo, VT N3400 Duo, N3400 Duo √ x VT NEXUS 34,NEXUS 34 , VT N3400, N3400 x √ Sincerely, Signature: Client’s name: Victor fan Title: CEO

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-EXP Page 1 of 7 EUT EXTERNAL PHOTOGRAPHS VT NEXUS 34 Duo Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-EXP Page 2 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-EXP Page 3 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-EXP Page 4 of 7 VT NEXUS 34 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-EXP Page 5 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-EXP Page 6 of 7 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-EXP Page 7 of 7

UC Headset Model: VT NEXUS 34 Duo Made in China SN: N34005251100001 P/N:N345A-96-00 FCC ID: 2AC67-HS034

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 1 of 16 EUT INTERNAL PHOTOGRAPHS VT NEXUS 34 Duo Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 2 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 3 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 4 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 5 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 6 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 7 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 8 of 16

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 9 of 16 VT NEXUS 34 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 10 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 11 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 12 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 13 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 14 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 15 of 16 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-INP Page 16 of 16

Note: 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. 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. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF024-1 Page 1 of 19 Version 3.0 TEST REPORT Applicant Name: Xiamen VBeT Electronics Co., Ltd. Address: N403, Weiye Building, Xiamen Pioneering Park for Overseas Chinese Scholars, PRC, Xiamen, China Report Number: 2601P01899E-EM-00 FCC ID: 2AC67-HS034 Test Standard (s) FCC Part 15, Subpart B (Class B) Sample Description Product Type: UC Headset Model No.: VT NEXUS 34 Duo Multiple Model(s) No.: NEXUS 34 Duo, VT N3400 Duo, N3400 Duo, VT NEXUS 34, NEXUS 34, VT N3400, N3400 Trade Mark: VT Date Received: 2026/01/20 Issue Date: 2026/03/24 Test Result: Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By: Approved By: Alex Yan Moon Liu EMC Engineer EMC Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-00 TR-EM-RF024-1 Page 2 of 19 Version 3.0 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ......................................................................................................................... 3 GENERAL INFORMATION ....................................................................................................................................... 4 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) ..................................................................................... 4 OBJECTIVE ................................................................................................................................................................... 4 TEST METHODOLOGY .................................................................................................................................................. 4 MEASUREMENT UNCERTAINTY .................................................................................................................................... 4 TEST FACILITY ............................................................................................................................................................. 5 SYSTEM TEST CONFIGURATION .......................................................................................................................... 6 DESCRIPTION OF TEST CONFIGURATION ...................................................................................................................... 6 EUT EXERCISE SOFTWARE ........................................................................................................................................... 6 EQUIPMENT MODIFICATIONS ....................................................................................................................................... 6 SUPPORT EQUIPMENT LIST AND DETAILS .................................................................................................................... 6 EXTERNAL I/O CABLE .................................................................................................................................................. 6 BLOCK DIAGRAM OF TEST SETUP ................................................................................................................................ 7 SUMMARY OF TEST RESULTS ............................................................................................................................... 8 TEST EQUIPMENT LIST ........................................................................................................................................... 9 FCC §15.107 - AC LINE CONDUCTED EMISSIONS ............................................................................................ 10 APPLICABLE STANDARD ............................................................................................................................................ 10 EUT SETUP ................................................................................................................................................................ 10 EMI TEST RECEIVER SETUP ....................................................................................................................................... 10 TEST PROCEDURE ...................................................................................................................................................... 11 LEVEL & OVER LIMIT CALCULATION ....................................................................................................................... 11 TEST DATA ................................................................................................................................................................ 11 FCC §15.109 - RADIATED EMISSIONS ................................................................................................................. 14 APPLICABLE STANDARD ............................................................................................................................................ 14 EUT SETUP .............................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-TSP Page 1 of 2 EXHIBIT D - TEST SETUP PHOTOGRAPHS Conducted Emissions Front View Conducted Emissions Side View Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2601P01899E-EM-TSP Page 2 of 2 Radiated Emissions Front View (Below 1 GHz) Radiated Emissions Rear View (Below 1 GHz)