2A58O-MBH001Wireless on-ear speakers

NTT Sonority [nc. To Whom lt May Concern: Statement for 47 CFR section 2.911(dX5)(i) NTT Sonority lnc. certifies that as of the date of the application the equipment for which authorization is sought is not "covered" equipmentl prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. lf the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, including affiliates or subsidiaries of the named companies, the applicant must include an explanation on why the equipment is not "covered" equipment. Additional Explanation: <N/A> Statement for 47 CFR section 2.911(dX5Xii) NTT Sonority lnc. ("the applicant") certifies that, as of the date of the filing of this application, the applicant tr - is / En- is n6l (s) identified on the Covered List as an entity producing "covered" equipment. Revision Record Sheet: 1 - The Commission's Covered List is published by the Public Safety and Homeland Security Bureau and posted on lhe Commlsslon's website. This Covered List, which is periodically updated, identifies pafticular equipment, produced by parlicular entities, that constitutes "covered" equipment. https://www.fcc.oov/suoplvchain/coveredlist . (2): For FCC it nust be the Grantee Code "ownef or the authoized agent. (3): double click on the appropiate box and select "checked" then "OK" Date: Tokyo Akira Nakagawa Function General l\4aneger Telephone number: Email address: akira. [email protected] Signature: A ki"e ltJakego, o

Declare that: Name Representative of agent: Agent Company name: Address: City: Country NTT Sonor'ity lnc. 3-ZA-2, Nishishinjuku Shinjuku-ku Tokyo Japan is authorized to apply for Certification of the following product(s) Product description: Wireless on-ear speakers Typedesignation: lVBH001 Trademark: nwm Validity/ expiry date 202514122 on our behalf. Date: City: Name: Function: Signature: Ahr.a Noko'tn,o Nofes.' (1): Required for FCC application (2): For FCC it must be the Grantee Code "ownef or the authoized agent.

Test Laboratory: BTL Date: 2024/6/6 System Check_H2450 Frequency: 2450 MHz; Duty Cycle: 1:1; Room Ambient Temperature: 23.0°C; Liquid Temperature: 22.0°C Medium parameters used (interpolated): f = 2450 MHz; σ = 1.779 S/m; ε r = 40.314; ρ = 1000 kg/m 3 DASY5 Configuration: - Area Scan Setting: Find Secondary Maximum Within: 2.0 dB and with a peak SAR value greater than 0.0012W/kg - Electronics: DAE3 Sn528; Calibrated: 2024/4/24 - Probe: EX3DV4 - SN7346; ConvF(7.87, 7.17, 7.26) @ 2450 MHz; Calibrated: 2024/4/24 - Sensor-Surface: 1.4mm (Mechanical Surface Detection) - Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1240 System Performance Check at Frequencies above 1 GHz/Pin=250mW/Area Scan (9x9x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 20.0 W/kg System Performance Check at Frequencies above 1 GHz/Pin=250mW/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 113.3 V/m; Power Drift = -0.12 dB Peak SAR (extrapolated) = 24.3 W/kg SAR(1 g) = 12.3 W/kg; SAR(10 g) = 5.78 W/kg Smallest distance from peaks to all points 3 dB below = 9 mm Ratio of SAR at M2 to SAR at M1 = 51.5% Maximum value of SAR (measured) = 20.1 W/kg 0 dB = 20.0 W/kg = 13.00 dBW/kg

Test Laboratory: BTL Date: 2024/6/6 BT Frequency: 2480 MHz; Duty Cycle: 1:1; Room Ambient Temperature: 23.0°C; Liquid Temperature: 22.0°C Medium parameters used (interpolated): f = 2480 MHz; σ = 1.802 S/m; ε r = 40.263; ρ = 1000 kg/m 3 DASY5 Configuration: - Area Scan Setting: Find Secondary Maximum Within: 2.0 dB and with a peak SAR value greater than 0.0012W/kg - Electronics: DAE3 Sn528; Calibrated: 2024/4/24 - Probe: EX3DV4 - SN7346; ConvF(7.87, 7.17, 7.26) @ 2480 MHz; Calibrated: 2024/4/24 - Sensor-Surface: 1.4mm (Mechanical Surface Detection) - Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1240 Wireless on-ear speakers/Rear Face_Left Earphone_0cm/BT_1M CH78 2480/Area Scan (9x9x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 0.620 W/kg Wireless on-ear speakers/Rear Face_Left Earphone_0cm/BT_1M CH78 2480/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 14.02 V/m; Power Drift = 0.00 dB Peak SAR (extrapolated) = 1.07 W/kg SAR(1 g) = 0.428 W/kg; SAR(10 g) = 0.191 W/kg Smallest distance from peaks to all points 3 dB below = 7.2 mm Ratio of SAR at M2 to SAR at M1 = 40.6% Maximum value of SAR (measured) = 0.771 W/kg Test Laboratory: BTL Date: 2024/6/6 BLE Frequency: 2480 MHz; Duty Cycle: 1:1; Room Ambient Temperature: 23.0°C; Liquid Temperature: 22.0°C Medium parameters used (interpolated): f = 2480 MHz; σ = 1.802 S/m; ε r = 40.263; ρ = 1000 kg/m 3 DASY5 Configuration: - Area Scan Setting: Find Secondary Maximum Within: 2.0 dB and with a peak SAR value greater than 0.0012W/kg - Electronics: DAE3 Sn528; Calibrated: 2024/4/24 - Probe: EX3DV4 - SN7346; ConvF(7.87, 7.17, 7.26) @ 2480 MHz; Calibrated: 2024/4/24 - Sensor-Surface: 1.4mm (Mechanical Surface Detection (Locations From Previous Scan Used)), Sensor-Surface: 1.4mm (Mechanical Surface Detection) - Phantom: ELI V5.0 (20deg probe tilt); Type: QD OVA 002 AA; Serial: 1240 Wireless on-ear speakers/Rear Face_Left Earphone_0cm/BLE_1M CH39 2480/Area Scan (9x9x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 0.259 W/kg Wireless on-ear speakers/Rear Face_Left Earphone_0cm/BLE_1M CH39 2480/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 9.179 V/m; Power Drift = 0.14 dB Peak SAR (extrapolated) = 0.469 W/kg SAR(1 g) = 0.187 W/kg; SAR(10 g) = 0.083 W/kg Smallest distance from peaks to all points 3 dB below = 7.2 mm Ratio of SAR at M2 to SAR at M1 = 37.5% Maximum value of SAR (measured) = 0.336 W/kg

Report No.: BTL-FCC SAR-1-2403T053 FCC SAR Test Report FCC ID: 2A58O-MBH001 Report No. : BTL-FCC SAR-1-2403T053 Equipment : Wireless on-ear speakers Model Name : MBH001 Brand Name : nwm Applicant : NTT Sonority, Inc. Address : 3-20-2, Nishishinjuku, Shinjuku-ku, Tokyo, Japan, 163-1432 Radio Function : Bluetooth Standard(s) : FCC§2.1093 Radiofrequency radiation exposure evaluation: portable devices IEEE C95.1:2019 Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz – 300 GHz. KDB447498 D04 Interim General RF Exposure Guidance v01 KDB248227 D01 802.11 Wi-Fi SAR v02r02 KDB865664 D01 SAR measurement 100 MHz to 6 GHz v01r04 KDB865664 D02 SAR Reporting v01r02 IEEE Std 1528:2013 Recommended Practice for Determining the Peak Spatial-Average Specific Absorption Rate (SAR) in the Human Head from Wireless Communications Devices: Measurement Techniques Date of Receipt : 2024/3/21 Date of Test : 2024/6/6 Issued Date : 2024/6/7 The above equipment has been tested and found in compliance with the requirement of the above standards by BTL Inc. Prepared by : Brett Shen, Engineer Approved by : Jerry Chuang, Supervisor BTL Inc. No.18, Ln. 171, Sec. 2, Jiuzong Rd., Neihu Dist., Taipei City 114, Taiwan Tel: +886-2-2657-3299 Fax: +886-2-2657-3331 Web: www.newbtl.com Project No.: 2403T053 Page 1 of 25 Report Version: R00 Report No.: BTL-FCC SAR-1-2403T053 Declaration BTL represents to the client that testing is done in accordance with standard procedures as applicable and that test instruments used has been calibrated with standards traceable to international standard(s) and/or national standard(s). BTL's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to ensure that additional production units of this model are manufactured with the identical electrical and mechanical components. BTL shall have no liability for any declarations, inferences or generalizations drawn by the client or others from BTL issued reports. This report is the confidential property of the client. As a mutual protection to the clients, the public and ourselves, the test report shall not be reproduced, except in full, without our written approval. BTL’s laboratory quality assurance procedures are in compliance with the ISO/IEC 17025 requirements, and accredited by the conformity assessment authorities listed in this test report. BTL is not responsible for the sampling stage, so the results only apply to the sample as received. The information, data and test plan are provided by manufacturer which may affect the validity of results, so it is manufacturer’s responsibility to ensure that the apparatus meets the essential requirements of applied standards and in all the possible configurations as representative of its intended use. Limitation For the use of the authority's logo is limited unless the Test Standard(s)/Scope(s)/Item(s) mentioned in this test report is (are) included in the conformity assessment authorities acceptance respective. Please note that the measurement uncertainty is provided for informational purpose only and are not use in determining the Pass/Fail results. Project No.: 2403T053 Page 2 of 25 Report Version: R00 Report No.: BTL-FCC SAR-1-2403T053 Table of Contents Page 1. GENERAL INFORMATION 5 1.1. GENERAL DESCRIPTION OF EUT 5 2. SUMMARY OF SAR MEASUREMENT 6 2.1. TEST FACILITY 6 2.2. MEASUREMENT UNCERTAINTY 7 2.3. ANTENNA INFORMATION 8 2.4. THE MAXIMUM SAR 1G VALUES 8 2.5. LABORATORY ENVIRONMENT 8 2.6. MAIN TEST INSTRUMENTS 9 3. SAR MEASUREMENTS SYSTEM CONFIGURATION 10 3.1. SAR MEASUREMENT SETUP 10 3.1.1. TEST SETUP LAYOUT 10 3.2. DASY5 E-FIELD PROBE SYSTEM 11 3.2.1. EX3DV4 PROBE SPECIFICATION 11 3.2.2. E-FIELD PROBE CALIBRATION 12 3.2.3. OTHER TEST EQUIPMENT 13 3.2.4. SCANNING PROCEDURE 14 3.2.5. DATA STORAGE AND EVALUATION 15 3.2.6. DATA EVALUATION BY SEMCAD 16 4. TISSUE-EQUIVALENT LIQUID 18 4.1. TISSUE-EQUIVALENT LIQUID INGREDIENTS 18 4.2. TISSUE-EQUIVALENT LIQUID PROPERTIES 18 5. SYSTEM CHECK 19 5.1. DESCRIPTION OF SYSTEM CHECK 19 5.2. DESCRIPTION OF SYSTEM CHECK 20 6. OPERATIONAL CONDITIONS DURING TEST 21 6.1. GENERAL DESCRIPTION OF TEST PROCEDURES 21 6.2. ANTENNA LOCATION 21 7. CONDUCTED POWER RESULTS 22 7.1. CONDUCTED POWER MEASUREMENT RESULTS OF BLUETOOTH 22 8. SAR TEST RESULTS 23 8.1. SAR TEST RESULTS 23 9. TEST LAYOUT 24 Project No.: 2403T053 Page 3 of 25 Report Version: R00 Report No.: BTL-FCC SAR-1-2403T053 REPORT ISSUED HISTORY Report Version Description Issued Date R00 Original Issue. 2024/6/7 Project No.: 2403T053 Page 4 of 25 Report Version: R00 Report No.: BTL-FCC SAR-1-2403T053 1. GENERAL INFORMATION 1.1. GENERAL DESCRIPTION OF EUT Equipment Wireless on-ear speakers Model Name MBH001 Brand Name nwm Model Difference N/A Power Source 1) Battery supplied. 2) Supplied from USB port. Power Rating 1) 3.85V/ 300mAH/ 1.155Wh 2) 5V −−− 0.5A Products Covered 1 * Battery: VDL / 402424PN4 1 * Wireless module: AIROHA / AB1585 1 * USB cable: JR Conn Electronics Co., Ltd./ JRK-560A Operation Frequency Function Band Frequency (MHz) Bluetooth Basic Rate (BR) TX : 2402 - 2480 MHz Enhance Data Rate TX : 2402 - 2480 MHz Bluetooth Low Energy TX : 2402 - 2480 MHz Te st Model MBH001 Sample Status Engineering Sample EUT Modification(s) N/A The above equipment has been tested and found compliance with the requirement of the relative standards by BTL Inc. Project No.: 2403T053 Page 5 of 25 Report Version: R00 Report No.: BTL-FCC SAR-1-2403T053 2. SUMMARY OF SAR MEASUREMENT 2.1. TEST FACILITY The test locations stated below are under the TAF Accreditation Number 0659. The test facilities used to collect the test data in this report is SAR Test room at the location of No. 68-1, Ln. 169, Sec.2, Datong Rd., Xizhi Dist., New Taipei City 221, Taiwan. ☒ SAR 01 ☐ SAR 02 ☐ SAR 03 Project No.: 2403T053 Page 6 of 25 Report Version: R00 Report No.: BTL-FCC SAR-1-2403T053 2.2. MEASUREMENT UNCERTAINTY Uncertainty Budget for Frequency range of 300 …

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Report No.: BTL-FCCP-2-2403T053 Project No.: 2403T053 Page 1 of 69 Report Version: R00 FCC Radio Test Report FCC ID: 2A58O-MBH001 Report No. : BTL-FCCP-2-2403T053 Equipment : Wireless on-ear speakers Model Name : MBH001 Brand Name : nwm Applicant : NTT Sonority, Inc. Address : 3-20-2, Nishishinjuku, Shinjuku-ku, Tokyo, Japan, 163-1432 Radio Function : Bluetooth Low Energy FCC Rule Part(s) : FCC CFR Title 47, Part 15, Subpart C (15.247) Measurement Procedure(s) : ANSI C63.10-2013 Date of Receipt : 2024/3/21 Date of Test : 2024/3/28 ~ 2024/4/9 Issued Date : 2024/4/18 The above equipment has been tested and found in compliance with the requirement of the above standards by BTL Inc. Prepared by : Eddie Lee, Engineer Approved by : Jerry Chuang, Supervisor BTL Inc. No.18, Ln. 171, Sec. 2, Jiuzong Rd., Neihu Dist., Taipei City 114, Taiwan Tel: +886-2-2657-3299 Fax: +886-2-2657-3331 Web: www.newbtl.com Service mail: [email protected] Report No.: BTL-FCCP-2-2403T053 Project No.: 2403T053 Page 2 of 69 Report Version: R00 Declaration BTL represents to the client that testing is done in accordance with standard procedures as applicable and that test instruments used has been calibrated with standards traceable to international standard(s) and/or national standard(s). BTL's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to ensure that additional production units of this model are manufactured with the identical electrical and mechanical components. BTL assumes no responsibility for the data provided by the Customer, any statements, inferences or generalizations drawn by the customer or others from the reports issued by BTL. This report is the confidential property of the client. As a mutual protection to the clients, the public and ourselves, the test report shall not be reproduced, except in full, without our written approval. BTL’s laboratory quality assurance procedures are in compliance with the ISO/IEC 17025 requirements, and accredited by the conformity assessment authorities listed in this test report. BTL is not responsible for the sampling stage, so the results only apply to the sample as received. The information, data and test plan are provided by manufacturer which may affect the validity of results, so it is manufacturer’s responsibility to ensure that the apparatus meets the essential requirements of applied standards and in all the possible configurations as representative of its intended use. Limitation For the use of the authority's logo is limited unless the Test Standard(s)/Scope(s)/Item(s) mentioned in this test report is (are) included in the conformity assessment authorities acceptance respective. Please note that the measurement uncertainty is provided for informational purpose only and are not use in determining the Pass/Fail results. Report No.: BTL-FCCP-2-2403T053 Project No.: 2403T053 Page 3 of 69 Report Version: R00 CONTENTS REVISION HISTORY 5 1 SUMMARY OF TEST RESULTS 6 1.1 TEST FACILITY 7 1.2 MEASUREMENT UNCERTAINTY 7 1.3 TEST ENVIRONMENT CONDITIONS 8 1.4 DUTY CYCLE 8 2 GENERAL INFORMATION 9 2.1 DESCRIPTION OF EUT 9 2.2 TEST MODES 11 2.3 BLOCK DIAGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 12 2.4 SUPPORT UNITS 13 3 AC POWER LINE CONDUCTED EMISSIONS TEST 14 3.1 LIMIT 14 3.2 TEST PROCEDURE 14 3.3 DEVIATION FROM TEST STANDARD 15 3.4 TEST SETUP 15 3.5 TEST RESULT 15 4 RADIATED EMISSIONS TEST 16 4.1 LIMIT 16 4.2 TEST PROCEDURE 17 4.3 DEVIATION FROM TEST STANDARD 17 4.4 TEST SETUP 17 4.5 EUT OPERATING CONDITIONS 19 4.6 TEST RESULT – 9KHZ TO 30 MHZ 19 4.7 TEST RESULT – 30 MHZ TO 1 GHZ 19 4.8 TEST RESULT – ABOVE 1 GHZ 19 5 BANDWIDTH TEST 20 5.1 APPLIED PROCEDURES / LIMIT 20 5.2 TEST PROCEDURE 20 5.3 DEVIATION FROM STANDARD 20 5.4 TEST SETUP 20 5.5 EUT OPERATION CONDITIONS 20 5.6 TEST RESULTS 20 6 OUTPUT POWER TEST 21 6.1 APPLIED PROCEDURES / LIMIT 21 6.2 TEST PROCEDURE 21 6.3 DEVIATION FROM STANDARD 21 6.4 TEST SETUP 21 6.5 EUT OPERATION CONDITIONS 21 6.6 TEST RESULTS 21 7 POWER SPECTRAL DENSITY TEST 22 7.1 APPLIED PROCEDURES / LIMIT 22 7.2 TEST PROCEDURE 22 7.3 DEVIATION FROM STANDARD 22 7.4 TEST SETUP 22 7.5 EUT OPERATION CONDITIONS 22 7.6 TEST RESULTS 22 Report No.: BTL-FCCP-2-2403T053 Project No.: 2403T053 Page 4 of 69 Report Version: R00 8 ANTENNA CONDUCTED SPURIOUS EMISSION 23 8.1 APPLIED PROCEDURES / LIMIT 23 8.2 TEST PROCEDURE 23 8.3 DEVIATION FROM STANDARD 23 8.4 TEST SETUP 23 8.5 EUT OPERATION CONDITIONS 23 8.6 TEST RESULTS 23 9 LIST OF MEASURING EQUIPMENTS 24 10 EUT TEST PHOTO 26 11 EUT PHOTOS 26 APPENDIX A AC POWER LINE CONDUCTED EMISSIONS 27 APPENDIX B RADIATED EMISSIONS - 9 KHZ TO 30 MHZ 32 APPENDIX C RADIATED EMISSIONS - 30 MHZ TO 1 GHZ 37 APPENDIX D RADIATED EMISSIONS - ABOVE 1 GHZ 40 APPENDIX E BANDWIDTH 59 APPENDIX F OUTPUT POWER 62 APPENDIX G POWER SPECTRAL DENSITY TEST 64 APPENDIX H ANTENNA CONDUCTED SPURIOUS EMISSION 67 Report No.: BTL-FCCP-2-2403T053 Project No.: 2403T053 Page 5 of 69 Report Version: R00 REVISION HISTORY Report No. Version Description Issued Date Note BTL-FCCP-2-2403T053 R00 Original Report. 2024/4/18 Valid Report No.: BTL-FCCP-2-2403T053 Project No.: 2403T053 Page 6 of 69 Report Version: R00 1 SUMMARY OF TEST RESULTS Test procedures according to the technical standards. Standard(s) Section Description Test Result Judgement Remark 15.207 AC Power Line Conducted Emissions APPENDIX A Pass ------ 15.205 15.209 15.247(d) Radiated Emissions APPENDIX B APPENDIX C APPENDIX D Pass ------ 15.247(a)(2) Bandwidth APPENDIX E Pass ------ 15.247(b)(3) Output Power APPENDIX F Pass ------ 15.247(e) Power Spectral Density APPENDIX G Pass ------ 15.247(d) Antenna conducted Spurious Emission APPENDIX H Pass ------ 15.203 Antenna Requirement ------ Pass ------ NOTE: (1) ”N/A” denotes test is not applicable in this Test Report. (2) The report format version is TP.1.1.1. Report No.: BTL-FCCP-2-2403T053 Project No.: 2403T053 Page 7 of 69 Report Version: R00 1.1 TEST FACILITY The test locations stated bel…

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ShruiRF DVT Antenna report 0229, 2024 2 Pictures of Antenna placement ChipAntenna  Antenna position : place on the PCBA main board.  Chip antenna dimension:3 mm* 1.6 mm  Clearance area : 7 mm * 15 mm (105푚푚 2 ) Chip antenna 3 Measurement Photo On headFree space S11 Return Loss for BTafter tuning 4  BT return loss > 5 dB after tuning Free space On head 3 Views of Antenna 5 6 BT 2D Radiation Patterns in Free space Head ZS planeZY planeXY plane Frequency (MHz) Max Value (dB) Average (dB) Max Value (dB) Average (dB) Max Value (dB) Average (dB) 2400-0.77-6.32-4.99-9.63-0.63-4.94 2450-0.04-6.34-5.05-10.510.07-4.90 2500-2.77-9.30-8.39-13.02-2.70-7.41 3 Views of Antenna 7 8 BT 2D Radiation Patterns on Head Head ZS planeZY planeXY plane Frequency (MHz) Max Value (dB) Average (dB) Max Value (dB) Average (dB) Max Value (dB) Average (dB) 2400-1.47-8.29-8.13-11.06-0.97-6.28 2450-1.21-7.85-7.42-11.09-0.73-5.74 2500-3.52-9.98-9.53-12.97-3.65-8.13 Antenna performance summary 9 Antenna Performance Return loss : > 5dB Efficiency : 21% DUT and 16% DUT on head. Peakgain : 0.1~-1.5dBi DVT BandFree space Head phantom Return loss (dB)2.4G> 5> 5 Efficiency(%) 2.4G> 21.8> 15.2 2.45G> 21.2> 16.8 2.48G> 20.3> 15.5 Peak gain(dBi) 2.4G< -0.6< -0.9 2.45G< 0.1< -0.7 2.48G< -0.9< -1.5 Customizable Section Heading Example