2AML5-BTW98Wireless Earphone

KVANCE TECHNOLOGY CO.,LTD Model Difference 2022-09-16 EUT NAME: Wireless Earphone FCC ID: 2AML5-BTW98 MODEL : BTW98, BTW86, BTW88, BTW92, BTW91, BTW95, BTW96, BTW106, BTW39, BTW40, BTW41, BTW42, BTW45, BTW46, BTW51 All the model are the same circuit and RF module, except model names and trademark. Trademark Model KVANCE BTW98 GEMS BTW86, BTW88 VEECOH BTW92, BTW91, BTW95 Rythflo BTW96, BTW106, BTW39, BTW40 Tonemac BTW41, BTW42, BTW45, BTW46, BTW51 Regards Sincerely Client’s signature: Client’s name / title : Levy Xie / Manager Contact information / address: 4 floor, Building A, No. 103, Baonan Road, Longgang District, Shenzhen, Guangdong, 518116, China

KVANCE TECHNOLOGY CO.,LTD 2022.09.16 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: CONFIDENTIALITY REQUEST FOR EUT NAME: Wireless Earphone Trademark: KVANCE, GEMS, VEECOH, Rythflo, Tonemac MODEL : BTW98, BTW86, BTW88, BTW92, BTW91, BTW95, BTW96, BTW106, BTW39, BTW40, BTW41, BTW42, BTW45, BTW46, BTW51 FCC ID : 2AML5-BTW98 To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the - Block Diagram - Schematics - Operational Description required to be submitted with this application be permanently withheld from public review. The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. Please contact me if there is any information you may need. Sincerely, Client’s signature: Client’s name / title : Levy Xie / Manager Contact information / address: 4 floor, Building A, No. 103, Baonan Road, Longgang District, Shenzhen, Guangdong, 518116, China

KVANCE TECHNOLOGY CO.,LTD 2022.09.16 Eurofins Electrical and Electronic Testing NA, Inc. 914 W. Patapsco Avenue Baltimore, MD 21230 USA RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize Shenzhen BCTC Testing Co., Ltd to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Client’s signature: Client’s name / title : Levy Xie / Manager Contact information / address: 4 floor, Building A, No. 103, Baonan Road, Longgang District, Shenzhen, Guangdong, 518116, China

External Photos

Size:10*5mm Wireless Earphone FCC ID: 2AML5-BTW98 Label location Label location

Internal Photos Antenna Antenna

CUSTOMER: SPECIFICATION FOR APPROVED PRODUCTS: FPC Antenna PART NO: Spec.: YL-BTW98-V2 Data: 2022. 8.10 SUPPLIER PREPARED BY CHECKED BY APPROVED BY CUSTOMER ACCEPTED BY CHECKED BY APPROVED BY REMARK:Please send us one(or copy)of this approval with stamp after accepting,other copies filed by the customer. Tel: 18820170917 Fax: 0755-26976277 ShenZhen City WINWAVE Technology CO.,LTD. BTW98-FPC Antenna ANTENNASPECIFICATION Contents .................................................................................................... 1 1. Project Information.................................................................. 3 1.1. Appearance and Dimensions............................................ 3 2. Electrical Characteristics..........................................................4 2.1. Test Environment Conditions...................................4 2.2. Measurement method........................................................4 2.2.1. VSWR.........................................................................4 2.2.2. Log Mag.......................................................................4 2.3. Efficiency and Gain ............................................... 5 2.3.1. Test system...............................................................5 2.3.2. No-source test data.............................................. 5 2.3.3. 3D Radiation Drawing.............................................................6 2.3.4. directional drawing of horizontal plane......................6 3. Notes.................................................................................................6 4. Reliability test...................................................................... 7 1 ANTENNASPECIFICATION Revision history VERSIONS DATESTATE V1 2022-01-10 First Version 2 V 2 2022-03-21 Second Version ANTENNASPECIFICATION 1. Project Information 1.1. Appearance and Dimensions 3 Test point Specifications Test result Overall dimensions OK Golden finger 4.9*2mm，6*2.5mm OK Drawing Inspection items Inspection results Material specification 25um copper+12.5um glue+12.5umPI OK Ma terial Half and half（ Electrolytic copper） OK Material gummed paper（3M300LSE） OK Electroplate Gold plating OK Appearance Surface: matte black OK 27.2mm*7.6mm ANTENNA SPECIFICATION 2. Electrical Characteristics 2.1. Test Environment Conditions Temperature OrdinaryTemperature (5 to 35°C) Humidity OrdinaryHumidity (25 to 85% RH) 2.2. Measurement method 4 2.3. ANTENNA SPECIFICATION Efficiency and Gain 2.3.1. Test system 2.3.2. No-source test data 5 ANTENNASPECIFICATION 2.3.3. 3D Radiation Drawing 2.3.4. directional drawing of horizontal plane 6 ANTENNASPECIFICATION 3. Notes 1、Pay attention not to be too close to the metal during installation to avoid affecting the antenna performance。 2、This antenna is only suitable for this model, and the position of the antenna cannot be changed. 6 ANTENNA SPECIFICATION 4. Reliability test Item Test methods and conditions Specifications and requirements Storage conditions Temperature, humidity and air pressure are as follows: 1、Temperature:-30°C~+80°C 2、Air pressure: 45%-85% 3、Pressure :86Kpa-106Kpa Salt spray test salinity is in range of 5% ;PH6.5-7.2;Temperature 35 ± 1°C;Corrosion time 16H. There is no change in appearance, and all antenna parameters are consistent with those of previous tests Vibration test 10-2000-10HZ amplitude 1.52mm Ten times along the X,Y,Z direction Drop Test Drop from 1m onto the board Pull test Bearing capacity≧4N Constant temperature and humidity humidity ：40°C± 2°C,90-95%RH Duration：4H recovery time：1-2H High and low temperature test 70°C -20°C 5 cycles ，Under normal conditions 1-2H 7

RF EXPOSURE EVALUATION METHOD FCC ID: 2AML5-BTW98 Applicable standard： In accordance with FCC 47 CFR part 2 (2.1093) this device has been defined as a portable device which is defined as a transmitting device designed to be used so that the radiating structure(s) of the device is/are within 20 centimeters of the body of the user. Portable devices must be evaluated using the specified in FCC 47 CFR part 2 (2.1093) and ANSI/IEEEC95.1-1992. and had been tested in accordance with the measurement methods and procedures specified in IEEE 1528-2003. Per FCC KDB 447498 D01 v06, the 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances s 50 mm are determined by: SAR Test Exclusion Thresholds for 100 MHz – 6 GHz and ≤ 50 mm Approximate SAR Test Exclusion Power Thresholds at Selected Frequencies and Test Separation Distances are illustrated in the following Table. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR,where f(GHz) is the RF channel transmit frequency in GHz Power and distance are rounded to the nearest mW and mm before calculation The result is rounded to one decimal place for comparison The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. BT Modulation Test Channel Output Power (dBm) Limit (dBm) GFSK Low -1.323 21 GFSK Middle -0.618 21 GFSK High -0.594 21 π/4DQPSK Low -0.437 21 π/4DQPSK Middle 0.262 21 π/4DQPSK High 0.275 21 max possible output power (PK,conducted)：0±1dBm 2.6dBi logarithmic terms convert to numeric result is nearly 1.82 1dBm=1.26mW 2402MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.26/5*√2.402=0.391≤3.0 2441MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.26/5*√2.441=0.394≤3.0 2480MHz [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance,mm)] · [√f(GHz)]= 1.26/5*√2.48=0.397≤3.0 Conclusion: 1. [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] < 3.0. 2. SAR Test Exclusion Thresholds is 3.0 for separation distance 5mm. Therefore, SAR test is not required.

No.：BCTC/RF-EMC-005 Page 1 of 59 Edition：A.5 TEST REPORT Shenzhen BCTC Testing Co., Ltd. Report No.: BCTC2209323276E Applicant: KVANCE TECHNOLOGY CO., LTD Product Name: Wireless Earphone Model/Type Ref.: BTW98 Tested Date: 2022-09-02 to 2022-09-07 Issued Date: 2022-09-07 Report No.: BCTC2209323276E No.：BCTC/RF-EMC-005 Page 2 of 59 Edition：A.5 FCC ID: 2AML5-BTW98 The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Testing Co., Ltd, this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. Product Name: Wireless Earphone Trademark: KVANCE, GEMS, VEECOH, Rythflo, Tonemac Model/Type Ref.: BTW98 BTW86, BTW88, BTW92, BTW91, BTW95, BTW96, BTW106, BTW39, BTW40, BTW41, BTW42, BTW45, BTW46, BTW51 Prepared For: KVANCE TECHNOLOGY CO., LTD Address: 4 floor, Building A, No. 103, Baonan Road, Longgang District, Shenzhen, Guangdong, 518116, China Manufacturer: SHENZHEN SOUND BASS TECHNOLOGY CO.,LTD Address: 4 floor, Building B, No. 103, Baonan Road, Longgang District, Shenzhen, Guangdong, 518116, China Prepared By: Shenzhen BCTC Testing Co., Ltd. Address: 1-2/F., Building B, Pengzhou Industrial Park, No.158, Fuyuan 1st Road, Zhancheng, Fuhai Subdistrict, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: 2022-09-02 Sample tested Date: 2022-09-02 to 2022-09-07 Issue Date: 2022-09-07 Report No.: BCTC2209323276E Test Standards: FCC Part15.247 ANSI C63.10-2013 Test Results: PASS Remark: This is Bluetooth Classic radio test report. Tested by: Approved by: Lei Chen/Project Handler Zero Zhou/Reviewer Report No.: BCTC2209323276E No.：BCTC/RF-EMC-005 Page 3 of 59 Edition：A.5 Table Of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information And Test Setup ..................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 table of parameters of text software setting ........................................................ 10 5. Test Facility And Test Instrument Used ............................................................... 11 5.1 Test Facility ......................................................................................................... 11 5.2 Test Instrument Used .......................................................................................... 11 6. Conducted Emissions .......................................................................................... 12 6.1 Block Diagram Of Test Setup .............................................................................. 12 6.2 Limit .................................................................................................................... 13 6.3 Test Procedure ................................................................................................... 13 6.4 EUT Operating Conditions .................................................................................. 13 6.5 Test Result .......................................................................................................... 14 7. Radiated Emissions ............................................................................................. 16 7.1 Block Diagram Of Test Setup .............................................................................. 16 7.2 Limit .................................................................................................................... 17 7.3 Test Procedure ................................................................................................... 18 7.4 EUT Operating Conditions .................................................................................. 19 7.5 Test Result .......................................................................................................... 19 8. Radiated Band Emission Measurement And Restricted Bands Of Operation ..... 23 8.1 Block Diagram Of Test Setup .............................................................................. 23 8.2 Limit .................................................................................................................... 23 8.3 Test Procedure ................................................................................................... 24 8.4 EUT Operating Conditions .................................................................................. 24 8.5 Test Result .......................................................................................................... 25 9. Conducted Emission ........................................................................................... 26 9.1 Block Diagram Of Test Setup .............................................................................. 26 9.2 Limit .................................................................................................................... 26 9.3 Test Procedure ...........................................................................................…

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Report No.: BCTC2209323276E No.：BCTC/RF-EMC-005 Page 57 of 59 Edition：A.5 17. EUT Test Setup Photographs Conducted emissions Radiated Measurement Photos Report No.: BCTC2209323276E No.：BCTC/RF-EMC-005 Page 58 of 59 Edition：A.5