2ASDI-O701LWIRELESS HEADPHONE

Covered Equipment Certification Attestation Letter Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: 2ASDI-O701L Tiinlab Corporation (“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. Tiinlab Corporation (“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: Lance Lang Title: N/A Company Name: Tiinlab Corporation Date: January 27, 2026

Designation of U.S. Agent for Service of Process Certification Attestation Letter DATE: 14 April 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA FCC ID: 2ASDI-O701L ATTENTION: FCC Certification – Section 2.911(d)(7) Information Tiinlab Corporation as required by section 2.911(d)(7), designate below contact located in the United States for purposes of acting as the applicant’s agent for service of process. The Applicant acknowledges that they must maintain an agent for no less than one year after terminating all marketing and importation or the conclusion of any Commission- related proceeding involving the equipment. The applicant further acknowledges their responsibility to inform the FCC whenever the Designated U.S. Agent information above changes. Applicant Signed: Designated U.S. Agent Signed: Signed:_________________________ Signed:__________________________ Printed name: Lance Lang Printed name: Gigi Liu Title: N/A Title: President Company Name: Tiinlab Corporation FRN: 0028116580 Email: [email protected] TEL: 0755-66850100 FAX: 0755-86550455 Address: No. 3333, Liuxian Avenue, Tower A, 35th Floor, Tanglang City, Nanshan District, Shenzhen, China Company Name: ASUS COMPUTER INTERNATIONAL FRN: 0033432428 Email: [email protected] TEL: (510) 608-4530 FAX: (510) 6084555 Address: 48720 Kato Road, Fremont, CA 94538, United States

Declaration of Authorization We Name: Tiinlab Corporation Address: No. 3333, Liuxian Avenue, Tower A, 35th Floor, City: Tanglang City, Nanshan District, Shenzhen Country: China Declare that: Name Representative of agent: Stanley Wu Agent Company name: DEKRA Testing and Certification Co., Ltd. Address: No. 26, Huaya 1 st Rd., Guishan Dist., City: Taoyuan City 333411 Country: Taiwan. is authorized to apply for FCC Certification of the following product(s): Product description: WIRELESS HEADPHONE Type designation: O701(L) FCC ID: 2ASDI-O701L Trademark: ASUS on our behalf. This is valid until Oct. 12, 2026, or until FCC certification is completed, whichever comes sooner. ----------------------------------- Lance Lang Tiinlab Corporation

Date: April 14, 2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Confidentiality Request regarding application for certification of FCC ID: 2ASDI-O701L Pursuant to FCC 47 CFR 0.457(d) and 0.459 of the Commission’s Rules, the Applicant Hereby requests confidential treatment of information accompanying this Application As outlined below: Type of Confidentiality Requested Exhibit ☒ Permanent Block Diagrams ☒ Permanent Operation Description ☐ Permanent Tune up procedure ☒ Permanent Schematics ☐ Permanent BOM List The above materials contain trade secrets and proprietary information not customarily Released to the public. The public disclosure of these matters might be harmful to the Applicant and provide unjustified benefits to its competitors. The Applicant understands that pursuant to Rule 0.457, disclosure of this Application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Type of Confidentiality Requested Exhibit ☒ Short Term External Photos ☒ Short Term Internal Photos ☒ Short Term Test Setup Photos ☒ Short Term User’s Manual Note: Release date of short term confidentiality is 180 days from grant date marked. (FCC must be informed when marketing begins earlier.) Sincerely, Name: Lance Lang Email: [email protected] Signature:

Report No.: 25A0510R-SAUSV01S-A Page: 1 of 24 Test report No.: 25A0510R-SAUSV01S-A SAR Test Report Product Name WIRELESS HEADPHONE Trademark ASUS Model and /or type reference O701(L) Applicant ́s name / address Tiinlab Corporation No. 3333, Liuxian Avenue, Tower A, 35th Floor, Tanglang City, Nanshan District, Shenzhen, China Manufacturer ́s name ASUSTeK COMPUTER INC. FCC ID 2ASDI-O701L Applicable Standard IEEE 1528-2013 KDB 447498 D01 v06 KDB 865664 D01 v01r04 Test Result Max. SAR Measurement (1g) 2.4 GHz: 0.584 W/kg Verdict Summary IN COMPLIANCE Documented By (Senior Project Specialist / Genie Chang) Tested By (Senior Engineer / Luke Cheng) Approved By (Assistant Manager / San Lin) Date of Receipt 2025/10/22 Date of Issue 2026/01/16 Report Version V1.0 Report No.: 25A0510R-SAUSV01S-A Page: 2 of 24 INDEX Page 1. General Information ........................................................................................................ 5 1.1 EUT Description ................................................................................................. 5 1.2 Antenna List ....................................................................................................... 5 1.3 Test Environment ................................................................................................ 6 1.4 Measurement procedures................................................................................... 7 2. SAR Measurement System ............................................................................................. 8 2.1 DASY System Description .................................................................................. 8 2.2 Area Scans ......................................................................................................... 9 2.3 DASY E-Field Probe ......................................................................................... 10 2.4 DATA Acquisition Electronics (DAE) and Measurement Server ........................ 11 2.5 Robot ................................................................................................................ 12 2.6 Device Holder ................................................................................................... 12 2.7 Phantom ........................................................................................................... 13 3. Tissue Simulating Liquid .............................................................................................. 14 3.1 The composition of the tissue simulating liquid ................................................ 14 3.2 Tissue Calibration Result .................................................................................. 14 3.3 Tissue Dielectric Parameters for Phantoms ..................................................... 15 4. Measurement Procedure ............................................................................................... 16 4.1 SAR System Check .......................................................................................... 16 4.2 SAR Measurement Procedure .......................................................................... 17 5. RF Exposure Limits ....................................................................................................... 18 6. Test Equipment List ...................................................................................................... 19 7. Measurement Uncertainty ............................................................................................. 21 8. Conducted Power Measurement (Including tolerance allowed for production unit) ................................................................................................................................ 22 9. Test Results ................................................................................................................... 23 9.1 Test Results Summary ..................................................................................... 23 Appendix A. System Check Data Appendix B. Highest measurement Data Appendix C. Test Setup Photographs Appendix D. Probe Calibration Data Appendix E. Dipole & Source Calibration Appendix F. Product Photos-Please refer to the file: 25A0510R-Product Photos Report No.: 25A0510R-SAUSV01S-A Page: 3 of 24 Competences and Guarantees DEKRA is a testing laboratory competent to carry out the tests described in this report. In order to assure the traceability to other national and international laboratories, DEKRA has a calibration and maintenance program for its measurement equipment. DEKRA guarantees the reliability of the data presented in this report, which is the result of the measurements and the tests performed to the item under test on the date and under the conditions stated in the report and it is based on the knowledge and technical facilities available at DEKRA at the time of performance of the test. DEKRA is liable to the client for the maintenance of the confidentiality of all information related to the item under test and the results of the test. The results presented in this Test Report apply only to the particular item under test established in this document. IMPORTANT: No parts of this report may be reproduced or quoted out of context, in any form or by any means, except in full, without the previous written permission of DEKRA. General conditions 1. The test results relate only to the samples tested. 2. The test results shown in the test report are traceable to the national/international standard through the calibration report of the equipment and evaluated measurement uncertainty herein. 3. This report must not be used to claim product endorsement by TAF or any agency of the government. 4. The test report shall not be reproduced without the written approval of DEKRA Testing and Certification Co., Ltd. 5. Measurement uncertainties evaluated for each testing system and associated connections are given here to provide the system information for reference. Compl…

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Report No.: 25A0510R-SAUSV01S-A Page: 1 of 2 Appendix A. System Check Data Report No.: 25A0510R-SAUSV01S-A Page: 2 of 2 Test Laboratory: DEKRA Date: 2026/01/02 System Performance Check_2450MHz-Head DUT: Dipole 2450 MHz; Type: D2450V2 Communication System: UID 0, CW; Frequency: 2450 MHz Communication System PAR: 0 dB Medium parameters used: f = 2450 MHz; σ = 1.82 S/m; ε r = 39.61; ρ = 1000 kg/m 3 Phantom section: Flat Section Measurement Standard: DASY5 (IEEE/IEC/ANSI C63.19-2011) DASY Configuration:  Probe: EX3DV4 - SN3698; ConvF(6.64, 6.51, 6.41) @ 2450 MHz; Calibrated: 2025/11/27  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1207; Calibrated: 2025/11/13  Phantom: SAM with left table; Type: SAM;  Measurement SW: DASY52, Version 52.10 (4); Configuration/2450MHz_Head/Area Scan (8x9x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 18.6 W/kg Configuration/2450MHz_Head/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 112.4 V/m; Power Drift = 0.04 dB Peak SAR (extrapolated) = 26.6 W/kg SAR(1 g) = 13.3 W/kg; SAR(10 g) = 6.32 W/kg Smallest distance from peaks to all points 3 dB below = 9 mm Ratio of SAR at M2 to SAR at M1 = 46.9% Maximum value of SAR (measured) = 21.3 W/kg

Report No.: 25A0510R-SAUSV01S-A Page: 1 of 2 Appendix B. Highest Measurement Data Report No.: 25A0510R-SAUSV01S-A Page: 2 of 2 Test Laboratory: DEKRA Date: 2026/01/02 9_Bluetooth_BT-1M_CH0_Front_0mmANT Main_Left-Ear DUT: Wireless Headphone; Type: O701 Communication System: UID 0, BT 1M&3M&BLE; Frequency: 2402 MHz Communication System PAR: 0 dB Medium parameters used: f = 2402 MHz; σ = 1.76 S/m; ε r = 39.8; ρ = 1000 kg/m 3 Phantom section: Flat Section Measurement Standard: DASY5 (IEEE/IEC/ANSI C63.19-2011) DASY Configuration:  Probe: EX3DV4 - SN3698; ConvF(6.64, 6.51, 6.41) @ 2402 MHz; Calibrated: 2025/11/27  Sensor-Surface: 1.4mm (Mechanical Surface Detection)  Electronics: DAE4 Sn1207; Calibrated: 2025/11/13  Phantom: SAM with left table; Type: SAM;  Measurement SW: DASY52, Version 52.10 (4); Configuration/Flat/Area Scan (7x6x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 0.809 W/kg Configuration/Flat/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 18.15 V/m; Power Drift = -0.04 dB Peak SAR (extrapolated) = 1.19 W/kg SAR(1 g) = 0.442 W/kg; SAR(10 g) = 0.162 W/kg Smallest distance from peaks to all points 3 dB below = 7 mm Ratio of SAR at M2 to SAR at M1 = 34.7% Maximum value of SAR (measured) = 0.823 W/kg

Report No.: 25A0510R-RFUSV01S-B Page: 1 of 24 Test Report No: 25A0510R-RFUSV01S-B TEST REPORT FCC Rules & Regulations Product Name WIRELESS HEADPHONE Brand Name ASUS Model No. O701(L) FCC ID 2ASDI-O701L Applicant ́s Name / Address Tiinlab Corporation 3333, Liuxian Avenue, Tower A, 35th Floor, Tanglang City, Nanshan District, Shenzhen, China Manufacturer’s Name ASUSTeK COMPUTER INC. Test Method Requested, Standard FCC CFR Title 47 Part 15 Subpart C Section 15.247 Verdict Summary IN COMPLIANCE Documented By Genie Chang Approved By Alan Chen Date of Receipt 2025/10/22 Date of Issue 2026/01/06 Report Version V1.0 Report No.: 25A0510R-RFUSV01S-B Page: 2 of 24 INDEX page Competences and Guarantees ............................................................................................................................... 4 General Conditions ................................................................................................................................................. 4 Revision History ...................................................................................................................................................... 5 Summary of Test Result .......................................................................................................................................... 6 1. General Information ................................................................................................................................. 7 1.1. EUT Description ...................................................................................................................................... 7 1.2. EUT Information ...................................................................................................................................... 8 1.3. Testing Location Information ................................................................................................................... 8 1.4. Measurement Uncertainty ....................................................................................................................... 9 1.5. List of Test Equipment ........................................................................................................................... 10 2. Test Configuration of EUT ..................................................................................................................... 11 2.1. Test Condition ........................................................................................................................................ 11 2.2. Test Frequency Mode ............................................................................................................................ 11 2.3. Duty Cycle ............................................................................................................................................. 12 2.4. Measurement Configuration .................................................................................................................. 13 2.5. Tested System Details ........................................................................................................................... 14 2.6. Configuration of Tested System ............................................................................................................ 14 2.7. EUT Operating Procedures ................................................................................................................... 15 3. AC Power Line Conducted Emission .................................................................................................... 16 3.1. Test Setup ............................................................................................................................................. 16 3.2. Test Limit ............................................................................................................................................... 16 3.3. Test Procedure ...................................................................................................................................... 16 3.4. Test Result of AC Power Line Conducted Emission ............................................................................. 16 4. 20dB Bandwidth .................................................................................................................................... 17 4.1. Test Setup ............................................................................................................................................. 17 4.2. Test Limit ............................................................................................................................................... 17 4.3. Test Procedures .................................................................................................................................... 17 4.4. Test Result of 20dB Bandwidth ............................................................................................................. 17 5. Carrier Frequency Separation ............................................................................................................... 18 5.1. Test Setup ............................................................................................................................................. 18 5.2. Test Limit ............................................................................................................................................... 18 5.3. Test Procedures .................................................................................................................................... 18 5.4. Test Result of Carrier Frequency Separation ........................................................................................ 18 6. Maximum Peak Conducted Output Power ............................................................................................ 19 6.1. Test Setup ........................................................…

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Report No.: 25A0510R-RFUSV01S-B Page: 1 of 24 Appendix A. Test Result of AC Power Line Conducted Emission Charge mode_Line Charge mode_Neutral Report No.: 25A0510R-RFUSV01S-B Page: 2 of 24 Appendix B. Test Result of 20dB Bandwidth Left Modulation Frequency (MHz) 20dB Bandwidth (MHz) Limit (MHz) GFSK 2402 0.96 - 2441 0.96 - 2480 0.96 - 8DPSK 2402 1.28 - 2441 1.28 - 2480 1.28 - Report No.: 25A0510R-RFUSV01S-B Page: 3 of 24 Left GFSK(DH5) / 2402 MHz GFSK(DH5) / 2441 MHz GFSK(DH5) / 2480 MHz 8DPSK(3DH5) / 2402 MHz 8DPSK(3DH5) / 2441 MHz 8DPSK(3DH5) / 2480 MHz Report No.: 25A0510R-RFUSV01S-B Page: 4 of 24 Appendix C. Test Result of Carrier Frequency Separation Left Modulation Frequency (MHz) Measure Level (MHz) Limit (MHz) Result GFSK 2402 1.00 0.637 Pass 2441 1.00 0.639 Pass 2480 1.00 0.637 Pass 8DPSK 2402 1.00 0.853 Pass 2441 1.00 0.856 Pass 2480 1.00 0.856 Pass Report No.: 25A0510R-RFUSV01S-B Page: 5 of 24 Left GFSK(DH5) / 2402 MHz GFSK(DH5) / 2441 MHz GFSK(DH5) / 2480 MHz 8DPSK(3DH5) / 2402 MHz 8DPSK(3DH5) / 2441 MHz 8DPSK(3DH5) / 2480 MHz Report No.: 25A0510R-RFUSV01S-B Page: 6 of 24 Appendix D. Test Result of Maximum Peak Conducted Output Power Left Modulation Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Limit (dBm) Result GFSK 2402 10.09 21.00 Pass 2441 10.08 21.00 Pass 2480 10.05 21.00 Pass 8DPSK 2402 10.28 21.00 Pass 2441 10.23 21.00 Pass 2480 10.29 21.00 Pass Report No.: 25A0510R-RFUSV01S-B Page: 7 of 24 Appendix E. Test Result of Number of Hopping Frequency Left Frequency Range (MHz) Measure Level (Channels) Limit (Channels) 2402.0 ~ 2480.0 79 ≧ 15 Report No.: 25A0510R-RFUSV01S-B Page: 8 of 24 Left GFSK(DH5) / 2402 MHz GFSK(DH5) / 2480 MHz 8DPSK(3DH5) / 2402 MHz 8DPSK(3DH5) / 2480 MHz Report No.: 25A0510R-RFUSV01S-B Page: 9 of 24 Appendix F. Test Result of Dwell Time Left Modulation Occupancy Time of Frequency Hopping System GFSK A) 2402 MHz Test Time Period: 0.4*79=31.60 sec, Time slot length :2.86 = 0.002860 sec Dwell Time : 0.002860 *(266.67/79)* 31.60= 0.305 sec。 B) 2441 MHz Test Time Period: 0.4*79=31.60 sec, Time slot length :2.86 = 0.002860 sec Dwell Time : 0.002860 *(266.67/79)* 31.60= 0.305 sec。 C) 2480 MHz Test Time Period: 0.4*79=31.60 sec, Time slot length :2.87 = 0.002870 sec Dwell Time : 0.002870 *(266.67/79)* 31.60= 0.306 sec。 8DPSK A) 2402 MHz Test Time Period: 0.4*79=31.60 sec, Time slot length :2.86 = 0.002860 sec Dwell Time : 0.002860 *(266.67/79)* 31.60= 0.305 sec。 B) 2441 MHz Test Time Period: 0.4*79=31.60 sec, Time slot length :2.87 = 0.002870 sec Dwell Time : 0.002870 *(266.67/79)* 31.60= 0.306 sec。 C) 2480 MHz Test Time Period: 0.4*79=31.60 sec, Time slot length :2.86 = 0.002860 sec Dwell Time : 0.002860 *(266.67/79)* 31.60= 0.305 sec。 Test Result: The occupancy time of each highest, middle and lowest channel is less than 0.4 sec, and corresponds to the standard. Report No.: 25A0510R-RFUSV01S-B Page: 10 of 24 Left GFSK(DH5) / 2402 MHz GFSK(DH5) / 2441 MHz GFSK(DH5) / 2480 MHz 8DPSK(3DH5) / 2402 MHz 8DPSK(3DH5) / 2441 MHz 8DPSK(3DH5) / 2480 MHz Report No.: 25A0510R-RFUSV01S-B Page: 11 of 24 Appendix G. Test Result of Antenna Port Conducted Emission Left Modulation Measurement Level Δ (dB) Result GFSK > 20 Pass 8DPSK > 20 Pass Report No.: 25A0510R-RFUSV01S-B Page: 12 of 24 Left GFSK(DH5) / 2402 MHz GFSK(DH5) / 2441 MHz GFSK(DH5) / 2480 MHz 8DPSK(3DH5) / 2402 MHz 8DPSK(3DH5) / 2441 MHz 8DPSK(3DH5) / 2480 MHz Report No.: 25A0510R-RFUSV01S-B Page: 13 of 24 GFSK(DH5) (Band Edge) / 2402 MHz GFSK(DH5) (Band Edge) / 2480 MHz 8DPSK(3DH5) (Band Edge) / 2402 MHz 8DPSK(3DH5) (Band Edge) / 2480 MHz Report No.: 25A0510R-RFUSV01S-B Page: 14 of 24 GFSK(DH5) (Band Edge Hopping) / 2402 MHz GFSK(DH5) (Band Edge Hopping) / 2480 MHz 8DPSK(3DH5) (Band Edge Hopping) / 2402 MHz 8DPSK(3DH5) (Band Edge Hopping) / 2480 MHz Report No.: 25A0510R-RFUSV01S-B Page: 15 of 24 Appendix H. Test Result of Radiated Emission Left TX_BT1M_2402MHz_H TX_BT1M_2402MHz_V TX_BT1M_2441MHz_H TX_BT1M_2441MHz_V Report No.: 25A0510R-RFUSV01S-B Page: 16 of 24 TX_BT1M_2480MHz_H TX_BT1M_2480MHz_V TX_BT3M_2402MHz_H TX_BT3M_2402MHz_V Report No.: 25A0510R-RFUSV01S-B Page: 17 of 24 TX_BT3M_2441MHz_H TX_BT3M_2441MHz_V TX_BT3M_2480MHz_H TX_BT3M_2480MHz_V Report No.: 25A0510R-RFUSV01S-B Page: 18 of 24 TX_BT3M_2441MHz_H TX_BT3M_2441MHz_V TX_BT1M_2402MHz_H_Peak TX_BT1M_2402MHz_V_Peak Report No.: 25A0510R-RFUSV01S-B Page: 19 of 24 TX_BT1M_2480MHz_H_Peak TX_BT1M_2480MHz_V_Peak TX_BT3M_2402MHz_H_Peak TX_BT3M_2402MHz_V_Peak Report No.: 25A0510R-RFUSV01S-B Page: 20 of 24 TX_BT3M_2480MHz_H_Peak TX_BT3M_2480MHz_V_Peak Charge mode_H Charge mode_V Report No.: 25A0510R-RFUSV01S-B Page: 21 of 24 Calculating Average Emission Left Horizontal Polarization for Average Detector: Modulation Channel No. Frequency Peak Measurement Duty Cycle Factor Measurement Level Margin Limit (MHz) (dBμV/m) (dB) (dBμV/m) (dB) (dBμV/m) GFSK 0 2388.4 59.04 -30.752 28.288 -25.712 54 2402 103.63 -30.752 72.878 -- -- 78 2480.2 101.63 -30.752 70.878 - -- 2505 58.37 -30.752 27.618 -26.382 54 8DPSK 0 2331 58.73 -30.752 27.978 -26.022 54 2402.2 102.98 -30.752 72.228 - -- 78 2480.2 100.41 -30.752 69.658 - -- 2495.8 58.63 -30.752 27.878 -26.122 54 Vertical Polarization for Average Detector: Modulation Channel No. Frequency Peak Measurement Duty Cycle Factor Measurement Level Margin Limit (MHz) (dBμV/m) (dB) (dBμV/m) (dB) (dBμV/m) GFSK 0 2351.2 59.06 -30.752 28.308 -25.692 54 2402 106.26 -30.752 75.508 -- -- 78 2480.2 105.33 -30.752 74.578 - -- 2484.6 58.71 -30.752 27.958 -26.042 54 8DPSK 0 2363.6 58.29 -30.752 27.538 -26.462 54 2402 106.05 -30.752 75.298 -- -- 78 2480.2 105.21 -30.752 74.458 - -- 2483.6 60.72 -30.752 29.968 -24.032 54