2AYYS-HS2704Wireless Headset

Luxshare Precision Industry Co., Ltd. Covered Equipment Certification Attestation Letter 4/29/2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2AYYS-HS2704 Luxshare Precision Industry Co., Ltd. (“the applicant”) 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. This includes certifying that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. Luxshare Precision Industry Co., Ltd. (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Signed: Printed name: Qiang Zhou Title: Regulatory Engineer Company Name: Luxshare Precision Industry Co., Ltd. Date: 4/29/2026

iCertifi Control Number - IC2026ASOP12342 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 06/05/2026 Ref: Attestation Statement Part 2.911(d)(7) Filing FCC ID: 2AYYS-HS2704 Luxshare Precision Industry Co., Ltd. certifies that, as of the dates of this application, Americas Compliance Consulting LLC dba iCertifi is our designated U.S. agent for service of process for the above referenced FCC ID. Manufacturer accepts to maintain an agent for no less than two year after the grantee has terminated all marketing and importation or the conclusion of any commission-related proceeding involving the equipment. iCertifi accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Americas Compliance Consulting LLC dba iCertifi FCC FRN: 0033399411 Address: 5809 US-2, Suite B, Albeni Plaza Priest River, Idaho 83856, United States Contact Person: Paul Preston Tel: +1 (866) 885-4575 Email: [email protected] Sincerely, Luxshare Precision Industry Co., Ltd.Americas Compliance Consulting LLC dba iCertifi FRN: 0030277669FRN: 0033399411 Qiang ZhouPaul Preston [email protected]@icertifi.com 86 13511626672+1 (866) 885-4575 Signature: Signature:

Luxshare Precision Industry Co., Ltd. Floor 2,Block A,Sanyo New Industrial Area, West Haoyi Community,Shajing Subdistrict Office Date: 2026/04/27 Federal Communications Commission 7435 Oakland Mills Road Columbia MD 21046 Subject : Authorization of Handling FCC Regulatory Applications To whom it may concern: I hereby, authorize Qiang Zhou, to handle FCC Regulatory related application for Luxshare Precision Industry Co., Ltd. Incorporated and sign all required application documents. Best Regards, Signed Company Name: Luxshare Precision Industry Co., Ltd. Contact Name: Bin Lin Title of Person: Product Design Engineer Tel: +86 15197269372 Email: [email protected]

Luxshare Precision Industry Co., Ltd. DATE: 2026/4/29 FCC ID: 2AYYS-HS2704 Dear Sir, I hereby have entrusted the following person to be a proxy regarding application for Type Certification. Company name: Underwriters Laboratories Taiwan Co., Ltd. Address: Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Name: Sally Lu For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for certification, as specified by Nemko North America, Inc, still resides with us. (Signature) FCC grantee contact person information. Name/Title: Qiang Zhou / Regulatory Engineer Company Name: Luxshare Precision Industry Co., Ltd. Address: Floor 2, Block A, Sanyo New Industrial Area, West Haoyi Community, Shajing Subdistrict Office, Bao an District Shenzhen, P. R. China TEL: 86 13511626672 FAX: N/A Email: [email protected]

Luxshare Precision Industry Co., Ltd. May 13, 2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: 2AYYS-HS2704 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. We also request short-term confidentiality on certain exhibits until the intended date of marketing as outlined below. We request the exhibits be withheld from public view for a period of 180 days. We attest marketing of the product will only commence after the period of short-term confidentiality expires, or if marketing is to commence before the requested number of days listed above, the grantee will inform Nemko to release the Short-Term Confidentiality information withheld on the FCC equipment authorization website. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☒ Short Term Internal Photos ☐ Permanent* ☒ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☒ Short Term User’s Manual ☐ Permanent* ☒ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, (Signature) Printed name: Qiang Zhou Title: Regulatory Engineer Company Name: Luxshare Precision Industry Co., Ltd.

Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX) :+886-3-583-7948 Doc No: Form-ULID-004755(DCS:17-EM-F0904) Issue: 7.0 Page 1 of 22 SAR EVALUATION REPORT FCC 47 CFR § 2.1093 IEEE Std 1528-2013 For Wireless Headset FCC ID: 2AYYS-HS2704 Model Name: HS2704 Report Number: 4792095238-US-S0-V0 Issue Date: 2026/5/25 Prepared for Luxshare Precision Industry Co., Ltd. Floor 2,Block A,Sanyo New Industrial Area, West Haoyi Community,Shajing Subdistrict Office, Bao an District Shenzhen, P. R. China Prepared by Underwriters Laboratories Taiwan Co., Ltd., Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan TEL: +886-2-7737-3000 FAX: +886-3-583-7948 Website: www.ul.com The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report are responsible of the test sample(s) provided by the client only and are not to be used to indicate applicability to other similar products. Report No.: 4792095238-US-S0-V0 Issue Date: 2026/5/25 Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX) :+886-3-583-7948 Doc No: Form-ULID-004755(DCS:17-EM-F0904) Issue: 6.0 Page 2 of 22 REVISION HISTORY Rev. Date Revisions Revised By V0 2026/5/25 Initial Issue Sally Lu Report No.: 4792095238-US-S0-V0 Issue Date: 2026/5/25 Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX) :+886-3-583-7948 Doc No: Form-ULID-004755(DCS:17-EM-F0904) Issue: 6.0 Page 3 of 22 Table of Contents 1. Attestation of Test Results ...................................................................................... 4 2. Test Specification, Methods and Procedures ......................................................... 5 3. Facilities and Accreditation ..................................................................................... 6 4. SAR Measurement System & Test Equipment ....................................................... 7 4.1. SAR Measurement System ..................................................................................... 7 4.2. SAR Scan Procedures ............................................................................................ 8 4.3. Test Equipment ..................................................................................................... 10 5. Measurement Uncertainty ...................................................................................... 11 6. Device Under Test (DUT) Information ................................................................... 12 6.1. DUT Description ................................................................................................... 12 6.2. Wireless Technologies .......................................................................................... 13 7. RF Exposure Conditions (Test Configurations) ................................................... 14 7.1. Standalone SAR Test Exclusion Considerations ................................................... 14 7.2. Required Test Configurations ............................................................................... 15 8. Dielectric Property Measurements & System Check ........................................... 16 8.1. Dielectric Property Measurements ........................................................................ 16 8.2. System Check ....................................................................................................... 18 9. Conducted Output Power Measurements ............................................................. 19 9.1. Bluetooth .............................................................................................................. 19 10. Measured and Reported (Scaled) SAR Results .................................................... 20 10.1. Test Condition ................................................................................................... 20 10.2. Bluetooth ........................................................................................................... 21 Appendixes ....................................................................................................................... 22 4792095238-US-S0-V0_Appendix A: SAR Setup Photos ................................................ 22 4792095238-US-S0-V0_Appendix B: Antenna Dimensions and Separation Distances ... 22 4792095238-US-S0-V0_Appendix C: SAR System Check Plots ..................................... 22 4792095238-US-S0-V0_Appendix D: Highest SAR Test Plots ........................................ 22 4792095238-US-S0-V0_Appendix F: SAR Probe and Dipole Calibration Certificates ...... 22 Report No.: 4792095238-US-S0-V0 Issue Date: 2026/5/25 Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX) :+886-3-583-7948 Doc No: Form-ULID-004755(DCS:17-EM-F0904) Issue: 6.0 Page 4 of 22 1. Attestation of Test Results Applicant Name Luxshare Precision Industry Co., Ltd. FCC ID 2AYYS-HS2704 Model Name HS2704 Exposure Category Uncontrolled Exposure Exposure Category SAR Limits (W/Kg) Peak spatial-average (1g of tissue) General population/Uncontrolled exposure 1.6 RF Exposure Conditions Equipment Class - Highest Reported SAR (W/kg) DTS Head 0.098 Date Tested 2026/4/21 Test Results Pass Underwriters Laboratories Taiwan Co., Ltd. tested the above equipment in accordance with the requirements set forth in the above standards. All indications of Pass/Fail in this report are …

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Report No.: 4792095238-US-S0-V0 Issue Date: 5/25/2026 Page 1 of 4 Underwriters Laboratories Taiwan Co., Ltd. This report shall not be reproduced without the written approval of Underwriters Laboratories Taiwan Co., Ltd. Appendix B: Antenna Dimensions and Separation Distances Left ear Right ear Antenna Inner ear Rear Right touch BT Antenna 13.00 3.71 3.63 Unit : mm Report No.: 4792095238-US-S0-V0 Issue Date: 5/25/2026 Page 2 of 4 Underwriters Laboratories Taiwan Co., Ltd. This report shall not be reproduced without the written approval of Underwriters Laboratories Taiwan Co., Ltd. Appendix C: SAR System Check Plots Test Laboratory:Underwriters Laboratories Taiwan Co., Ltd Date: 2026/4/21 System Performance Check-2450MHz DUT: D2450V2-988 Communication System: UID 0, CW (0); Frequency: 2450 MHz; Communication System PAR: 0 dB Medium parameters used: f = 2450 MHz; σ = 1.791 S/m; ε r = 40.861; ρ = 1000 kg/m 3 Phantom section: Flat Section Ambient Temperature : 23.6 °C ; Liquid Temperature : 22.6°C DASY Configuration: • Probe: EX3DV4 - SN3901; ConvF(6.85, 6.86, 7.06) @ 2450 MHz; Calibrated: 2025/9/25 o Modulation Compensation: • Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = 1.0, 31.0 • Electronics: DAE4 Sn1360; Calibrated: 2025/9/11 • Phantom: ELI v5.0_1213; Type: QDOVA001BB; Serial: 1213 • DASY52 52.10.4(1535); SEMCAD X 14.6.14(7501) System Check/2450MHz/Area Scan (71x71x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 20.8 W/kg System Check/2450MHz/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 106.5 V/m; Power Drift = -0.03 dB Peak SAR (extrapolated) = 24.4 W/kg SAR(1 g) = 12.7 W/kg; SAR(10 g) = 6.06 W/kg Smallest distance from peaks to all points 3 dB below = 9 mm Ratio of SAR at M2 to SAR at M1 = 52.5% Maximum value of SAR (measured) = 20.3 W/kg 0 dB = 20.3 W/kg = 13.07 dBW/kg Report No.: 4792095238-US-S0-V0 Issue Date: 5/25/2026 Page 3 of 4 Underwriters Laboratories Taiwan Co., Ltd. This report shall not be reproduced without the written approval of Underwriters Laboratories Taiwan Co., Ltd. Appendix D: Highest SAR Test Plots Test Laboratory:Underwriters Laboratories Taiwan Co., Ltd Date: 2026/4/21 Bluetooth_Right touch_ch1 DUT: Headset Communication System: UID 0, Bluetooth (0); Frequency: 2404 MHz; Communication System PAR: 0 dB Medium parameters used: f = 2404 MHz; σ = 1.746 S/m; ε r = 41.059; ρ = 1000 kg/m 3 Phantom section: Flat Section Ambient Temperature : 23.6 °C ; Liquid Temperature : 22.6 °C DASY Configuration: • Probe: EX3DV4 - SN3901; ConvF(6.85, 6.86, 7.06) @ 2404 MHz; Calibrated: 2025/9/25 o Modulation Compensation: • Sensor-Surface: 1.4mm (Mechanical Surface Detection), z = -49.0, 31.0 • Electronics: DAE4 Sn1360; Calibrated: 2025/9/11 • Phantom: ELI v5.0_1213; Type: QDOVA001BB; Serial: 1213 • DASY52 52.10.4(1535); SEMCAD X 14.6.14(7501) SAR/Ch0/Area Scan (101x61x1): Interpolated grid: dx=1.200 mm, dy=1.200 mm Maximum value of SAR (interpolated) = 0.0596 W/kg SAR/Ch0/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 3.143 V/m; Power Drift = -0.01 dB Peak SAR (extrapolated) = 0.0740 W/kg SAR(1 g) = 0.035 W/kg; SAR(10 g) = 0.015 W/kg Smallest distance from peaks to all points 3 dB below: Larger than measurement grid (> 15 mm) Ratio of SAR at M2 to SAR at M1 = 46.5% Maximum value of SAR (measured) = 0.0596 W/kg 0 dB = 0.0596 W/kg = -12.25 dBW/kg Report No.: 4792095238-US-S0-V0 Issue Date: 5/25/2026 Page 4 of 4 Underwriters Laboratories Taiwan Co., Ltd. This report shall not be reproduced without the written approval of Underwriters Laboratories Taiwan Co., Ltd. Appendix E: SAR Probe and Dipole Calibration Certificates

INPAQ TECHNOLOGY CO., LTD 2026/04/09 UNLESS OTHER SPECIFIED TOLERANCES ON： INPAQ TECHNOLOGY CO., LTD. X＝N/A X.X＝N/AX.XX＝N/A ANGLES＝N/A HOLEDIA＝N/A SCALE：N/A UNIT：mm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY：涂正憲CHECKED BY：鄭榮謀 DESIGNED BY：彭少君APPROVED BY：陳柏劭 TITLE：Embedded Single-Band Antenna for WAG-F-LA-00-233 DOCUMENT ENS000217270 SPEC REV. NO. P2 PAGE 1 OF 3 Embedded Single-Band Antenna for WAG-F-LA-00-233 1. Explanation of part number： WAG F LA 00 233 (1) (2) (3) (4) (5) (1) Product type：Wireless Antenna (2) Material：FPCB (3) Frequency：2400~2500 MHz (4) Coaxial Cable Type：No Cable (5) Suffix：233 2. Electrical Specification： The specifications were specially defined for Fender model Antenna, and all characteristics were measured under the model’s handset testing jig. 2-1. Frequency Band： Frequency 2400-2500 MHz Brand name: INPAQ TECHNOLOGY CO., LTD. Model mane: WAG-F-LA-00-233 Manufacturer: INPAQ TECHNOLOGY CO., LTD. Manufacturer address:90, Keyi St., Zhunan Township, Miaoli County 350402, Taiwan INPAQ TECHNOLOGY CO., LTD 2026/04/09 UNLESS OTHER SPECIFIED TOLERANCES ON： INPAQ TECHNOLOGY CO., LTD. X＝N/A X.X＝N/A X.XX＝N/A ANGLES＝N/A HOLEDIA＝N/A SCALE：N/A UNIT：mm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY：涂正憲 CHECKED BY：鄭榮謀 DESIGNED BY：彭少君 APPROVED BY：陳柏劭 TITLE：Embedded Single-Band Antenna for WAG-F-LA-00-233 DOCUMENT ENS000217270 SPEC REV. NO. P2 PAGE 2 OF 3 2-2 Return Loss: 2-3 Efficiency / Peak Gain INPAQ TECHNOLOGY CO., LTD 2026/04/09 UNLESS OTHER SPECIFIED TOLERANCES ON： INPAQ TECHNOLOGY CO., LTD. X＝N/A X.X＝N/A X.XX＝N/A ANGLES＝N/A HOLEDIA＝N/A SCALE：N/A UNIT：mm THIS DRAWINGS AND SPECIFICATIONS ARE THE PROPERTY OF INPAQ TECHNOLOGY CO.,LTD.AND SHALL NOT BE REPRODUCED OR USED AS THE BASIS FOR THE MANUFACTURE OR SALE OF APPARATUS OR DEVICES WITHOUT PERMISSION DRAWN BY：涂正憲 CHECKED BY：鄭榮謀 DESIGNED BY：彭少君 APPROVED BY：陳柏劭 TITLE：Embedded Single-Band Antenna for WAG-F-LA-00-233 DOCUMENT ENS000217270 SPEC REV. NO. P2 PAGE 3 OF 3 3. Antenna Drawing： PAD區，表面處理鍍金 (金:鎳 只有正面黃色覆蓋膜 外觀標準 :依INPAQ檢驗標準出貨。 工程圖上號為重點尺寸標註指示 工程圖上號為CPK量測尺寸標註指示 只需量測球標)重點尺寸,FQC全尺寸 . 離型紙拉手 (不含離型紙厚度) 黃色覆蓋膜上印字: Fender_2026-0105_v0 Fender_2026-0105_v0 UL印字 紅色為正面鋪銅 (單面板) PAD區 表面處理:鍍金 REV.P0 ITEM DESCRIPTION MATERIAL SPECIFICATION QUANTITY UNIT 1 FPCB T=0.13mm(FPCB含背膠) 1 PCS

Test report No. : 4792095238-US-R0-V0 Page : 1 of 58 Issued date : 2026/5/5 FCC ID : 2AYYS-HS2704 Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX ) :+886-3-583-7948 Doc No: Form-ULID-004737 (DCS:17-EM-F0876) / 7.0 RADIO TEST REPORT Product : Wireless Headset Model Name : HS2704 FCC ID : 2AYYS-HS2704 Test Regulation : FCC 47 CFR Part 15 Subpart C (Section 15.247) Received Date : 2026/3/31 Test Date : 2026/04/08 ~ 2026/04/09 Issued Date : 2026/5/5 Applicant : Luxshare Precision Industry Co., Ltd. Floor 2,Block A,Sanyo New Industrial Area, West Haoyi Community,Shajing Subdistrict Office, Bao an District Shenzhen, P. R. China Issued By : Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan The results reported herein have been performed in accordance with the laboratory’s terms of accreditation. This report shall not be reproduced except in full without the written approval of the Laboratory. The results in this report are responsible of the test sample(s) provided by the client only and are not to be used to indicate applicability to other similar products. Test report No. : 4792095238-US-R0-V0 Page : 2 of 58 Issued date : 2026/5/5 FCC ID : 2AYYS-HS2704 Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX ) :+886-3-583-7948 Doc No: Form-ULID-004737 (DCS:17-EM-F0876) / 7.0 REVISION HISTORY Original Test Report No.: 4792095238-US-R0-V0 Revision Test report No. Date Page revised Contents Original 4792095238-US-R0-V0 2026/5/5 - Initial issue Test report No. : 4792095238-US-R0-V0 Page : 3 of 58 Issued date : 2026/5/5 FCC ID : 2AYYS-HS2704 Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX ) :+886-3-583-7948 Doc No: Form-ULID-004737 (DCS:17-EM-F0876) / 7.0 Table of Contents 1. Attestation of Test Results ..................................................................................................4 2. Summary of Test Results ....................................................................................................5 3. Test Methodology and Reference Procedures ..................................................................6 4. Facilities and Accreditation ................................................................................................6 5. Measurement Uncertainty ..................................................................................................7 6. Equipment under Test .........................................................................................................8 6.1. Description of EUT .................................................................................................. 8 6.2. Channel List ............................................................................................................. 9 6.3. Test Condition ........................................................................................................ 10 6.4. Description of Available Antennas ........................................................................ 11 6.5. Test Mode Applicability and Tested Channel Detail ............................................. 12 6.6. Duty cycle .............................................................................................................. 13 7. Test Equipment ................................................................................................................. 14 8. Description of Test Setup ................................................................................................. 16 9. Test Results ........................................................................................................................ 18 9.1. Channel Bandwidth ................................................................................................ 18 9.2. Conducted Output Power ....................................................................................... 21 9.3. Hopping Channel Separation ................................................................................. 23 9.4. Number of Hopping Frequency Used .................................................................... 26 9.5. Dwell Time on Each Channel ................................................................................ 28 9.6. Conducted Out of Band Emission.......................................................................... 31 9.7. Radiated Spurious Emission .................................................................................. 36 9.8. AC Power Line Conducted Emission .................................................................... 55 Test report No. : 4792095238-US-R0-V0 Page : 4 of 58 Issued date : 2026/5/5 FCC ID : 2AYYS-HS2704 Underwriters Laboratories Taiwan Co., Ltd. Building A, B and E, No. 372-7, Sec. 4, Zhongxing Rd., Zhudong Township, Hsinchu County, Taiwan Telephone :+886-2-7737-3000 Facsimile (FAX ) :+886-3-583-7948 Doc No: Form-ULID-004737 (DCS:17-EM-F0876) / 7.0 1. Attestation of Test Results APPLICANT: Luxshare Precision Industry Co., Ltd. Floor 2,Block A,Sanyo New Industrial Area, West Haoyi Community,Shajing Subdistrict Office, Bao an District Shenzhen, P. R. China MANUFACTURER: Luxshare Precision Industry Co., Ltd. 2nd floor,A building,Sanyo New Industrial Area,West of Maoyi,Shajing Street,Ban'an District,Shenzhen City,Guangdong Province,China EUT DESCRIPTION: Wireless Headset BRAND: DELL MODEL: HS2704 SAMPLE STAGE: Engineering Verification Test Sample DATE of TESTED: 2026/04/08 ~ 2026/04/09 APPLICABLE STANDARDS STANDARD Test Results FCC 47 CFR PART 15 Subpart C (Section 15.247) PASS Underwriters Lab…

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