2AN4C-TWE7BTrue Wireless Earbuds

Please read these precautions care fully before using this product. Points that must be observedBe sure to carefully read and observe the following precautions to avoid harm to yourself or to others, as well as damage to your personal property.After reading, please keep this document re adily available for anyone who uses this product. • For inspection or repair, please contact one of the following customer centers. - The store where you purchased the product- Yamaha dealer • This product is intended for use as a general household device. Do not use it in any field or activity requiring a high degree of reliability in regard to human lives or valuable assets. • Please note that Yamaha accepts no liability for any losses resulting from improper use or unauthorized modification of this product. These precautions alert you to the possibilit y of death or serious injury to yourself or others. Handling • Do not use this product while driving or cycling. Also, do not use this product when you need to hear what is going on around you, such as at a railroad crossing or construction site. Reduced ability to hear surrounding sound increases the risk of an accident. If you notice any abnormality • If any of the following abnormalities occur, stop using this product immediately. - Unusual smells, sounds or smoke coming from the product- Foreign matter or water gets inside the product- An unusual amount of heat from the product- Cracks or damage to the productContinuing to use the product as-is may result in burns, injury, fire ignition, explosion, fluid leakage, electrical shock or malfunction. Have the product inspected or repaired immediately. Charging • To charge the charging case, connect it to the USB port of a commercially available USB power adaptor (5 V DC, min. 0.5 A output). Incorrect connection may cause a fire, explosion, fluid leakage, electric shock or malfunctions. For details on charging, refer to the User Guide. • Charge this product within the specified charging temperature range. Charging at a temperature outside this range may cause a fire , explosion, fluid leakage, electric shock, or malfunction. Charging temperature : 5 – 40 °C • Use the included charging case to charge the earbuds. Using a charger other than the included charging case may cause a fire, ex plosion, fluid leakage, electric shock or malfunction. • Do not use the supplied USB power cable for other devices. Use only the supplied USB power cable to charge this product. Failure to observe this may cause a fire, burns, or malfunction. • Do not cover the product with blankets, clothi ng or similar materials while being used or charged. This may cause overheating or ignite a fire. • Never charge this product when it is wet. This may cause a fire, explosion, fluid leakage, electrical shock or malfunction. Battery use • Do not dispose of batteries in a fire or hot oven, or mechanically crush or cut the battery. Doing so may cause an explosion. • Do not leave the batteries in a place with ex tremely high ambient temperature. This may result in an explosion, or cause th e flammable liquid or gas to leak. • Do not subject the batteries to extremely low air pressure. This may result in an explosion or the leakage of flammable liquid or gas. Do not disassemble • Do not disassemble or modify this product. Failure to observe this may cause a fire, electric shock, injury or malfunction. Water warning • Regarding the charging case an d the included USB power cable: Do not use these products in damp or wet co nditions, such as in a bathroom or rainy outdoor location. Also, do not get the products wet with sweat, rainwater or seawater.The charging case and includ ed USB power cable are not waterproof. Liquids such as water or foreign matter that get into these products may cause a fire, explosion, water leakage, electric shock or malfunction. When charging, make sure that the earbuds are not wet. If they are wet, wipe them off with a soft, dry cloth. • Do not handle the charging case with wet ha nds. Failure to observe this may cause fire, explosion, fluid leakage, electric shock or malfunction. Fire warning • Do not use open flame near this product. Failure to observe this may cause a fire, explosion, fluid leakage, electric shock or malfunction. Handling • Do not drop this product or apply any strong impact to the product. Wireless unit • Do not use this product in an area where the use of radio waves is restricted, such as near medical devices. Otherwise, radio waves emitted from this product may affect the operation of medical electric equipment. When using this product in an airplane, follow the instructions of the crew. • Do not use this product within 15 cm (6 in) of a person with a heart pacemaker implant or a defibrillator implant. Otherwise, radio waves emitted from this product may affect the operation of the pacemaker implan t or the defibrillator implant. These precautions alert you to the possibil ity of physical injury to yourself or others. Hearing loss • Do not expose yourself to high volu me sound for an extended period of time. Otherwise, hearing loss may be caused. Avoid listening for more than 40 hours per week at a volume leve l of 80 dB (A), or more than five hours per week at a volume level of 89 dB (A). If you experience any hearing abnormality, consult a physician. • Minimize the volume from the device to be connected before connecting the plug. Failing to do so may result in hearing loss or device damage. Handling • Keep small parts out of the reach of infants. Your children may accidentally swallow them. • Do not wear earbuds without earpieces. Do not use broken earpieces. Otherwise, injury may be caused. • If the earbuds irritate your skin, stop using them. Otherwise, inflamma tion or rash may be caused. • Attach the earpieces to the earbuds secure ly. Otherwise, earpieces may detach and remain in your ears, resulting in injury. Follow the precautions below to avoid malfunction and damage to this produc…

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COLOR BEIGE COULEUR XXXX COLOR BEIGE COULEUR XXXX VFA5100 TW-E7B BEIGE //G 4957812673976 027108960555 COLOR DARK BLUE COULEUR XXX BLEU COLOR DARK BLUE COULEUR XXX BLEU VFA5110 TW-E7B DARK BLUE //G 4957812673983 027108960562 COLOR WHITE COULEUR XXXX COLOR WHITE COULEUR XXX VFA5090 TW-E7B WHITE //G 4957812673969 027108960548

SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-02 Rev 1.0 Page: 1 of 6 Appendix External Photos for GZCR2108020936AT SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-02 Rev 1.0 Page: 2 of 6 EUT Constructional Details (EUT Photos) SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-02 Rev 1.0 Page: 3 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-02 Rev 1.0 Page: 4 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-02 Rev 1.0 Page: 5 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-02 Rev 1.0 Page: 6 of 6

SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 1 of 11 Appendix Internal Photos for GZCR2108020936AT SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 2 of 11 EUT Constructional Details (EUT Photos) SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 3 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 4 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 5 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 6 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 7 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 8 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 9 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 10 of 11 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-03 Rev 1.0 Page: 11 of 11

SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-TRF-03 Rev 1.0 Report No.: GZCR210802093603 Page: 1 of 9 FCC ID: 2AN4C-TWE7B Kobe Jian EMC Laboratory Manager RF EXPOSURE EVALUATION REPORT Application No.: GZCR2108020936AT Applicant: Shenzhen Grandsun Electronic Co., Ltd. Address of Applicant: East Park,Gaoqiao Industry Zone,Pingdi Street,Longgang,Shenzhen China Manufacturer: Shenzhen Grandsun Electronic Co., Ltd. Address of Manufacturer: East Park,Gaoqiao Industry Zone,Pingdi Street,Longgang,Shenzhen China Factory: Shenzhen Grandsun Electronic Co., Ltd. Address of Factory: East Park,Gaoqiao Industry Zone,Pingdi Street,Longgang,Shenzhen China Equipment Under Test (EUT): EUT Name: True Wireless Earbuds Model No.: TW-E7B Trade Mark: YAMAHA Standard(s) : 47 CFR PART 1, Subpart I, Section 1.1310 47 CFR PART 2, Subpart J, Section 2.1093 KDB447498D01 General RF Exposure Guidance v06 Date of Receipt: 2021-08-23 Date of Evaluation: 2021-08-23 to 2021-08-31 Date of Issue: 2021-09-01 Evaluation Result: Pass* * In the configuration evaluated, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093603 EMC-TRF-03 Rev 1.0 Page: 2 of 9 Revision Record Version Chapter Date Modifier Remark 01 2021-09-01 Original Authori zed for issue by: Tested By Curry Wu/Project Engineer Reviewed By Ricky Liu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093603 EMC-TRF-03 Rev 1.0 Page: 3 of 9 2 Evaluation Summary Note: E.U.T./EUT means Equipment Under Test. Pass means the test result passed the test standard requirement, please find the detailed decision rule in the report relative section. SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093603 EMC-TRF-03 Rev 1.0 Page: 4 of 9 3 Contents Page 1 Cover Page ......................................................................................................................................... 1 2 Evaluation Summary .......................................................................................................................... 3 3 Contents ............................................................................................................................................. 4 4 General Information............................................................................................................................ 5 4.1 Details of E.U.T. ........................................................................................................................... 5 4.2 Evaluating Location ...................................................................................................................... 5 4.3 Facility ......................................................................................................................................... 6 4.4 Deviation from Standards ............................................................................................................. 6 4.5 Abnormalities from Standard Conditions ....................................................................................... 6 5 Technical Requirements Specification .............................................................................................. 7 5.1 RF Exposure Evaluation ............................................................................................................... 7 5.1.1 Limit & Test Method ................................................................................................................. 7 5.1.2 Conclusion ............................................................................................................................... 7 6 EUT Constructional Details (EUT Photos) ......................................................................................... 9 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093603 EMC-TRF-03 Rev 1.0 Page: 5 of 9 4 General Information 4.1 Details of E.U.T. Power supply: DC 5V from adapter input AC 120V/60Hz Lithium Ion Battery: DC 3.7V 85mAh 0.32Wh rechargeable battery which charged by charging case for left earbud and right earbud Lithium Ion Battery: DC 3.7V 800mAh 2.96Wh rechargeable battery which charged by USB port for charging case Cable(s): Type C cable:13cm unshielded Ratings: Lithium Ion Battery: DC 3.7V 85mAh 0.32Wh rechargeable battery which charged by charging case for left earbud and right earbud Lithium Ion Battery: DC 3.7V 800mAh 2.96Wh rechargeable battery which charged by USB port for charging case Serial No.: Z010461UW For BT: Operation Frequency: 2402MHz to 2480MHz Bluetooth Version: V5.2 Dual mode Modulation Type: GFSK, pi/4DQPSK, 8DPSK Number of Channels: 79 Channel Spacing: 1MHz Spectrum Spread Technology: Frequency Hopping Spread Spectrum(FHSS) Antenna Type: LDS Antenna Gain: 0.45dBi For BLE: Operation Frequency: 2402MHz to 2480MHz Bluetooth Version: V5.2 Dual mode Modulation Type: GFSK Number of Channels: 40 Channel Spacing: 2MHz Rate data: 1M/bits and 2M/bits Antenna Type: LDS Antenna Gain: 0.45dBi 4.2 Evaluating Location All tests were performed at: SGS-CSTC Standards Technical Services Co., Ltd., Guangzhou Branch EMC Laboratory, 198 Kezhu Road, Scientech Park, Guangzhou Economic & Technology Development District, Guangzhou, China 510663 Tel: +86 20 82155555 Fax: +86 20 82075059 No tests were sub-contracted. SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093603 EMC-TRF-03 Rev 1.0 Page: 6 of 9 4.3 Facility The facility is recognized, certified, or accredited by the following organizations: ● NVLAP (Lab Code: 200611-0) SGS-CSTC Standards Technical Services Co., Ltd., Guangzhou EMC Laboratory is accredited by the National Voluntary Laboratory Accreditation Program (NVLAP/NIST). NVLAP Code: 200611-0. The report must not be used by the client to claim product certification, approva…

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SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-TRF-01 Rev 1.0 Report No.: GZCR210802093602 Page: 1 of 126 FCC ID: 2AN4C-TWE7B Kobe Jian EMC Laboratory Manager TEST REPORT Application No.: GZCR2108020936AT Applicant: Shenzhen Grandsun Electronic Co., Ltd. Address of Applicant: East Park,Gaoqiao Industry Zone,Pingdi Street,Longgang,Shenzhen China Manufacturer: Shenzhen Grandsun Electronic Co., Ltd. Address of Manufacturer: East Park,Gaoqiao Industry Zone,Pingdi Street,Longgang,Shenzhen China Factory: Shenzhen Grandsun Electronic Co., Ltd. Address of Factory: East Park,Gaoqiao Industry Zone,Pingdi Street,Longgang,Shenzhen China Equipment Under Test (EUT): EUT Name: True Wireless Earbuds Model No.: TW-E7B Trade Mark: YAMAHA Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2021-08-23 Date of Test: 2021-08-23 to 2021-08-31 Date of Issue: 2021-09-01 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 2 of 126 Revision Record Version Chapter Date Modifier Remark 01 2021-09-01 Original Authorized for issue by : Curry Wu/Project Engineer Ricky Liu/Reviewer EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 3 of 126 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A Note 1 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Conducted Peak Output Power 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 11.9.1.3 47 CFR Part 15, Subpart C 15.247(b)(3) Pass Minimum 6dB Bandwidth ANSI C63.10 (2013) Section 11.8.1 47 CFR Part 15, Subpart C 15.247a(2) Pass Power Spectrum Density ANSI C63.10 (2013) Section 11.10.2 47 CFR Part 15, Subpart C 15.247(e) Pass Conducted Band Edges Measurement ANSI C63.10 (2013) Section 11.13.3.2 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions ANSI C63.10 (2013) Section 11.11 47 CFR Part 15, Subpart C 15.247(d) Pass Radiated Emissions which fall in the restricted bands ANSI C63.10 (2013) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions (Below 1GHz) ANSI C63.10 (2013) Section 6.4,6.5,6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions (Above 1GHz) ANSI C63.10 (2013) Section 6.4,6.5,6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Note: E.U.T./EUT means Equipment Under Test. Pass means the test result passed the test standard requirement, please find the detailed decision rule in the report relative section. Note: 1.N/A= Not applicable. EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 4 of 126 3 Contents Page 1 Cover Page ......................................................................................................................................... 1 2 Test Summary ..................................................................................................................................... 3 3 Contents ............................................................................................................................................. 4 4 General Information............................................................................................................................ 6 4.1 Details of E.U.T. ........................................................................................................................... 6 4.2 Description of Support Units ......................................................................................................... 7 4.3 Measurement Uncertainty ............................................................................................................ 8 4.4 Test Location ............................................................................................................................... 9 4.5 Test Facility .................................................................................................................................. 9 4.6 Deviation from Standards ............................................................................................................10 4.7 Abnormalities from Standard Conditions ......................................................................................10 5 Equipment List ..................................................................................................................................11 6 Radio Spectrum Technical Requirement ..........................................................................................14 6.1 Antenna Requirement .................................................................................................................14 6.1.1 Test Requirement: ..................................................................................................................14 7 Radio Spectrum Matter Test Results ................................................................................................15 7.1 Conducted Peak Output Power ...................................................................................................15 7.1.1 E.U.T. Operation .....................................................................................................................15 7.1.2 Test Mode Description ............................................................................................................15 7.1.3 Test Setup Diagram ................................................................................................................16 7.1.4 Measurement Procedure and Data .........................................................................................16 7.2 Minimum 6dB Bandwidth ...............…

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EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 71 of 126 Test Mode: 05; Polarity: Vertical; Modulation:GFSK; ; Channel:High Rata data:2M/bits EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 72 of 126 8 Test Setup Photo Refer to Appendix - Test Setup Photo for GZCR2108020936AT 9 EUT Constructional Details (EUT Photos) Refer to Appendix – External and Internal Photos for GZCR2108020936AT EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 73 of 126 10 Appendix Left earbud 1. Duty Cycle 1.1 Ant1 1.1.1 Test Result Ant1 Mode TX Type Frequency (MHz) T_on (ms) Period (ms) Duty Cycle (%) Duty Cycle Correction Factor (dB) Max. DC Variation (%) 1M SISO 2402 0.409 0.625 65.44 1.84 0.03 2440 0.391 0.625 62.56 2.04 0.03 2480 0.391 0.625 62.56 2.04 0.03 2M SISO 2402 0.208 0.625 33.28 4.78 0.03 2440 0.208 0.625 33.28 4.78 0.00 2480 0.207 0.625 33.12 4.80 0.00 EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 74 of 126 1.1.2 Test Graph 1M_LCH_2402MHz_DataRate=_Ant1_NTNV 1M_MCH_2440MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 75 of 126 1M_HCH_2480MHz_DataRate=_Ant1_NTNV 2M_LCH_2402MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 76 of 126 2M_MCH_2440MHz_DataRate=_Ant1_NTNV 2M_HCH_2480MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 77 of 126 2. Bandwidth 2.1 OBW 2.1.1 Test Result Mode TX Type Frequency (MHz) Ant 99% Occupied Bandwidth (MHz) Verdict Result 1M SISO 2402 1 1.044 Pass 2440 1 1.044 Pass 2480 1 1.043 Pass 2M SISO 2402 1 2.071 Pass 2440 1 2.068 Pass 2480 1 2.067 Pass EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 78 of 126 2.1.2 Test Graph 1M_LCH_2402MHz_DataRate=_Ant1_NTNV 1M_MCH_2440MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 79 of 126 1M_HCH_2480MHz_DataRate=_Ant1_NTNV 2M_LCH_2402MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 80 of 126 2M_MCH_2440MHz_DataRate=_Ant1_NTNV 2M_HCH_2480MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 81 of 126 2.2 6dB BW 2.2.1 Test Result Mode TX Type Frequency (MHz) Ant 6dB Bandwidth (MHz) Verdict Result Limit 1M SISO 2402 1 0.724 >=0.5 Pass 2440 1 0.714 >=0.5 Pass 2480 1 0.705 >=0.5 Pass 2M SISO 2402 1 1.251 >=0.5 Pass 2440 1 1.254 >=0.5 Pass 2480 1 1.261 >=0.5 Pass EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 82 of 126 2.2.2 Test Graph 1M_LCH_2402MHz_DataRate=_Ant1_NTNV 1M_MCH_2440MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 83 of 126 1M_HCH_2480MHz_DataRate=_Ant1_NTNV 2M_LCH_2402MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 84 of 126 2M_MCH_2440MHz_DataRate=_Ant1_NTNV 2M_HCH_2480MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 85 of 126 3. Maximum Conducted Output Power 3.1 Power 3.1.1 Test Result Mode TX Type Frequency (MHz) Maximum Peak Conducted Output Power (dBm) Verdict Ant1 Limit 1M SISO 2402 4.14 <=30 Pass 2440 4.23 <=30 Pass 2480 4.35 <=30 Pass 2M SISO 2402 4.17 <=30 Pass 2440 4.27 <=30 Pass 2480 4.40 <=30 Pass EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 86 of 126 4. Maximum Power Spectral Density 4.1 PSD 4.1.1 Test Result Mode TX Type Frequency (MHz) Maximum PSD (dBm/3kHz) Verdict Ant1 Limit 1M SISO 2402 -11.44 <=8 Pass 2440 -11.24 <=8 Pass 2480 -11.04 <=8 Pass 2M SISO 2402 -14.91 <=8 Pass 2440 -14.68 <=8 Pass 2480 -14.54 <=8 Pass EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 87 of 126 4.1.2 Test Graph 1M_LCH_2402MHz_DataRate=_Ant1_NTNV 1M_MCH_2440MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 88 of 126 1M_HCH_2480MHz_DataRate=_Ant1_NTNV 2M_LCH_2402MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 89 of 126 2M_MCH_2440MHz_DataRate=_Ant1_NTNV 2M_HCH_2480MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 90 of 126 5. Unwanted Emissions In Non-restricted Frequency Bands 5.1 Ref 5.1.1 Test Result Mode TX Type Frequency (MHz) Ant Level of Reference (dBm) 1M SISO 2402 1 4.06 2440 1 4.14 2480 1 4.27 2M SISO 2402 1 4.00 2440 1 4.10 2480 1 4.23 Note1: Refer to FCC Part 15.247 (d) and ANSI C63.10-2013, the channel contains the maximum PSD level was used to establish the reference level. EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 91 of 126 5.1.2 Test Graph 1M_LCH_2402MHz_DataRate=_Ant1_NTNV 1M_MCH_2440MHz_DataRate=_Ant1_NTNV EMC-TRF-01 Rev 1.0 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Report No.: GZCR210802093602 Page: 92 of 126 1M_HCH_2480MHz_DataRate=_Ant1_NTNV 2M_LCH_2402MHz_D…

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SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch EMC-ARF-04 Rev 1.0 Page: 1 of 5 Appendix Test Setup Photo for GZCR2108020936AT SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Page: 2 of 5 Test Setup Photo Radiated Emissions which fall in the restricted bands Left earbud Right earbud SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Page: 3 of 5 SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Page: 4 of 5 Radiated Spurious Emissions (Below 1GHz) Left earbud Right earbud SGS-CSTC Standards Technical Services Co., Ltd. Guangzhou Branch Page: 5 of 5 Radiated Spurious Emissions (Above 1GHz) Left earbud Right earbud