2AKMBTW-E3ATruly Wireless Earphones

PLEASE READ CAREFULLY BEFORE USE. BE SURE TO FOLLOW THESE INSTRUCTIONS. The precautions listed below are to prevent risk of harm to the user and others, as well as to prevent property damage, and to help the user use this unit properly and safely. Be sure to follow these instructions. After reading this manual, be sure to keep it in a safe place where it can be referenced at any time. • Be sure to request inspections or repairs from the dealer where you purchased the unit or from qualified Yamaha service personnel. • Yamaha cannot be held responsible for injury to you or damage of the products caused by improper use or modifications to the unit. • This product is for ordinary homes. Do not use for applications requiring high reliability, such as managing lives, health care or high-value assets. This content indicates “risk of serious injury or death.” Handling caution • Do not listen with the earphones or headphones while driving or cycling. Also avoid using them where hearing must not be impaired, like at a railroad crossing and a site of construction. 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 the device immediately. - An unusual smell, unusual sound or smoke is emitted from the unit. - Foreign material or water gets into the interior of the unit. - The unit produces an unusual amount of heat. (Risk of burns or injuries) - There is a crack or damage in the unit. - The unit is dropped. Continued use could cause electric shocks, a fire, or malfunctions. Immediately request an inspection or repair from the dealer where you purchased the unit or from qualified Yamaha service personnel. Charging • Be sure to use the supplied USB power cable. Failure to observe the above may cause a fire, burns, or malfunctions. • 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 fire, electric shock, or malfunction. For details on charging, refer to this User’s Guide. • Charges within the specified charging temperature range. Charging at a temperature outside the range may cause leakage, overheating, explosion, or damage. • Use the included charging case to charge the earphones. Using a charger other than the included charging case may cause fluid leakage, overheating, rupture or damage. • Do not use the supplied USB power cable for other units. Failure to observe the above may cause a fire, burns, or malfunctions. • Do not cover the unit with blankets, clothing, etc. while being used or charged. It may cause overheating and fire. • Never charge when the unit is wet. Doing so may cause electric shock, fire, or malfunction due to short circuiting. • Do not do anything that could damage the supplied power USB power cable. - Do not place it near a heater. - Do not bend it excessively or alter it. - Do not scratch it. - Do not place it under a heavy object. Using the power cord with the core of the cord exposed could cause electric shocks or a fire. Battery use • Disposal of a battery into fire or a hot oven, or mechanically crushing or cutting of a battery, that can result in an explosion. • Leaving a battery in an extremely high temperature surrounding environment that can result in an explosion or the leakage of flammable liquid or gas. • A battery subjected to extremely low air pressure that may result in an explosion or the leakage of flammable liquid or gas. Do not disassemble • Do not disassemble or modify this unit. Failure to observe this may cause a fire, electric shocks, injury, or malfunctions. Water warning • The charging case and the included USB power cable are not waterproof. • Do not expose the unit to rain, use it near water or in damp or wet conditions, or place on it any containers (such as vases, bottles or glasses) containing liquids which might spill into any openings or places where water may drop. A liquid such as water getting into the unit may cause a fire, electric shocks, or malfunctions. When charging, make sure that the earphones are not wet. If they are wet, wipe them off with a soft, dry cloth. • Do not handle the charging case with wet hands. Failure to observe this may cause electric shocks or malfunctions. Fire warning • Do not place any burning items or open flames near the unit, since they may cause a fire. Handling caution • Be careful not to drop or apply strong impact to this unit. Failure to observe this may cause electric shocks, a fire, or malfunctions. Wireless unit • Do not use this unit in areas where the use of radio waves is restricted. Radio waves from this unit may affect electro-medical devices. When using this unit in an airplane, follow the instructions of the crew. • Do not use this unit within 15 cm (6 in) of persons with a heart pacemaker implant or a defibrillator implant. Radio waves from this unit may affect electro-medical devices, such as a heart pacemaker implant or defibrillator implant. This content indicates “risk of injury.” Hearing loss • Do not use the unit for a long period of time at a high or uncomfortable volume level. Otherwise, hearing loss may result. Do not exceed 40 hours/week at 80 dB(A) or 5 hours/ week at 89 dB(A). If you experience any problems, 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 caution • Keep small parts out of the reach of infants. Your children may accidentally swallow them. • Do not pull on the included USB power cable while it is connected. Pulling on a connected cable may cause damage. • Do not use the earphones with the eartips detached or broken. Otherwise, injuries or inflammation may result. • In case the earphones irritate your skin, stop use immediately. Continued use may worsen injuries or inflammation. • Securely attach the eartips and the ear sleeves…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 6 External Photos for SZEM1910019132CR FCC ID:2AKMBTW-E3A SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 6 1 EUT Constructional Details SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 6 of 6

Label: Label Location: bottom of the charging case

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 6 Internal Photos for SZEM1910019132CR FCC ID:2AKMBTW-E3A SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 6 1 EUT Constructional Details SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 6 Antenna SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 5 of 6 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 6 of 6

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913204 Page: 1 of 8 Keny Xu EMC Laboratory Manager 1 Cover page SAR Evaluation Report Application No.: SZEM1910019132CR Applicant: Kingstate Electronics(Dongguan)Co., Ltd Address of Applicant: Shi Chong Industrial Park, Shi Chong Avenue, Xiang Xi Village, Shi Pai Town, Dong Guan City, Guang Dong Province, China. Manufacturer: Kingstate Electronics(Dongguan)Co., Ltd Address of Manufacturer: Shi Chong Industrial Park, Shi Chong Avenue, Xiang Xi Village, Shi Pai Town, Dong Guan City, Guang Dong Province, China. Factory: Kingstate Electronics(Dongguan)Co., Ltd Address of Factory: Shi Chong Industrial Park, Shi Chong Avenue, Xiang Xi Village, Shi Pai Town, Dong Guan City, Guang Dong Province, China. Equipment Under Test (EUT): EUT Name: Truly Wireless Earphones Model No.: TW-E3A Trade Mark: YAMAHA FCC ID: 2AKMBTW-E3A Standards: 47 CFR Part 1.1307 47 CFR Part 2.1093 KDB447498D01 General RF Exposure Guidance v06 Date of Receipt: 2019-10-10 Date of Test: 2019-10-12 to 2019-10-24 Date of Issue: 2019-10-25 Test Result : PASS* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913202 Page: 2 of 8 2 Version Revision Record Version Chapter Date Modifier Remark 01 2019-10-25 Original Authorized for issue by: Harry Wu /Project Engineer Eric Fu /Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913202 Page: 3 of 8 3 Contents Page 1 COVER PAGE .............................................................................................................................................. 1 2 VERSION ...................................................................................................................................................... 2 3 CONTENTS .................................................................................................................................................. 3 4 GENERAL INFORMATION .......................................................................................................................... 4 4.1 GENERAL DESCRIPTION OF EUT ............................................................................................................. 4 4.2 TEST LOCATION ...................................................................................................................................... 5 4.3 TEST FACILITY ........................................................................................................................................ 5 4.4 DEVIATION FROM STANDARDS ................................................................................................................. 5 4.5 ABNORMALITIES FROM STANDARD CONDITIONS ....................................................................................... 5 4.6 OTHER INFORMATION REQUESTED BY THE CUSTOMER ............................................................................. 5 5 SAR EVALUATION ...................................................................................................................................... 6 5.1 RF EXPOSURE COMPLIANCE REQUIREMENT ............................................................................................ 6 5.1.1 Standard Requirement ..................................................................................................................... 6 5.1.2 Limits ................................................................................................................................................ 6 5.1.3 EUT RF Exposure ......................................................................................................................... 6-8 SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913202 Page: 4 of 8 4 General Information 4.1 General Description of EUT Power supply: Earphone: Lithium Battery: DC3.7V, 60mAh, 0.222Wh Charge Case: DC5V, 0.5A Cable: Type-C Cable:30cm, unshielded Serial No.: Z010249UW For BT Operation Frequency: 2402MHz to 2480MHz Bluetooth Version: V5.0 Spectrum Spread Technology: Frequency Hopping Spread Spectrum(FHSS) Modulation Type: GFSK, π/4DQPSK, 8DPSK Number of Channels: 79 Channel Spacing: 1MHz Antenna Type: Integral Antenna Antenna Gain: -5dBi For BLE Operation Frequency: 2402MHz to 2480MHz Bluetooth Version: V5.0 Channel Spacing: 2MHz Modulation Type: GFSK Number of Channels: 40 Antenna Type: Integral Antenna Antenna Gain: -5dBi Data Rate: 1Mb/s, 2Mb/s SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913202 Page: 5 of 8 4.2 Test Location All tests were performed at: SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch No. 1 Workshop, M-10, Middle section, Science & Technology Park, Shenzhen, Guangdong, China 518057 Telephone: +86 (0) 755 2601 2053 Fax: +86 (0) 755 2671 0594 No tests were sub-contracted. 4.3 Test Facility The test facility is recognized, certified, or accredited by the following organizations: • CNAS (No. CNAS L2929) CNAS has accredited SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch EMC Lab to ISO/IEC 17025:2005 General Requirements for the Competence of Testing and Calibration Laboratories (CNAS-CL01 Accreditation Criteria for the Competence of Testing and Calibration Laboratories) for the competence in the field of testing. • A2LA (Certificate No. 3816.01) SGS-CSTC Standards Technical Services Co., Ltd., Shenzhen EMC Laboratory is accredited by the American Association for Laboratory Accreditation(A2LA). Certificate No. 3816.01. • VCCI The 3m Fully-anechoic chamber for above 1GHz, 10m Semi-anechoic chamber for below 1GHz, Shielded Room for Mains Port Conducted Interference Measurement and Telecommunication Port Conducted Interference Measurement of SGS-CSTC Standards Technical Services Co., Ltd. have been registered in accordance wi…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913203 Page: 1 of 143 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZEM1910019132CR Applicant: Kingstate Electronics(Dongguan)Co., Ltd Address of Applicant: Shi Chong Industrial Park, Shi Chong Avenue, Xiang Xi Village, Shi Pai Town, Dong Guan City, Guang Dong Province, China. Manufacturer: Kingstate Electronics(Dongguan)Co., Ltd Address of Manufacturer: Shi Chong Industrial Park, Shi Chong Avenue, Xiang Xi Village, Shi Pai Town, Dong Guan City, Guang Dong Province, China. Factory: Kingstate Electronics(Dongguan)Co., Ltd Address of Factory: Shi Chong Industrial Park, Shi Chong Avenue, Xiang Xi Village, Shi Pai Town, Dong Guan City, Guang Dong Province, China. Equipment Under Test (EUT): EUT Name: Truly Wireless Earphones Model No.: TW-E3A Trade Mark: YAMAHA FCC ID: 2AKMBTW-E3A Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2019-10-10 Date of Test: 2019-10-12 to 2019-10-24 Date of Issue: 2019-10-25 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913203 Page: 2 of 143 Revision Record Version Chapter Date Modifier Remark 01 2019-10-25 Original Authorized for issue by: Harry Wu /Project Engineer Eric Fu /Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913203 Page: 3 of 143 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Minimum 6dB Bandwidth 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 11.8.1 47 CFR Part 15, Subpart C 15.247a(2) Pass Conducted Peak Output Power 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 11.9.1 47 CFR Part 15, Subpart C 15.247(b)(3) Pass Power Spectrum Density 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 11.10.2 47 CFR Part 15, Subpart C 15.247(e) Pass Conducted Band Edges Measurement 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 11.13.3.2 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions 47 CFR Part 15, Subpart C 15.247 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 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2013) Section 6.4,6.5,6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Report No.: SZEM191001913203 Page: 4 of 143 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 ......................................................................................................... 6 4.3 MEASUREMENT UNCERTAINTY .............................................................................................................. 6 4.4 TEST LOCATION .................................................................................................................................... 7 4.5 TEST FACILITY ...................................................................................................................................... 7 4.6 DEVIATION FROM STANDARDS ............................................................................................................... 7 4.7 ABNORMALITIES FROM STANDARD CONDITIONS ..................................................................................... 7 5 EQUIPMENT LIST ...................................................................................................................................... 8 6 RADIO SPECTRUM TECHNICAL REQUIREMENT ............................................................................... 12 6.1 ANTENNA REQUIREMENT .................................................................................................................... 12 6.1.1 Test Requirement: ....................................................................................................................... 12 6.1.2 Conclusion ................................................................................................................................... 12 7 RADIO SPECTRUM MATTER TEST RESULTS ..................................................................................... 13 7.1 MINIMUM 6DB BANDWIDTH .................................................................................................................. 13 7.1.1 E.U.T. Operation .......................................................................................................................... 13 7.1.2 Test Setup Diagram ..................................................................................................................... 13 7.1.3 Measurement Procedure and Data............................................................................................. 13 7.2 CONDUCTED PEAK OUTPUT POWER .......................................…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 1 of 4 Setup Photos for SZEM1910019132CR FCC ID:2AKMBTW-E3A SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 2 of 4 1 Photographs 1.1 Radiated Emissions which fall in the restricted bands Test Setup SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 3 of 4 1.2 Radiated Spurious Emissions Test Setup SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch Page: 4 of 4