2AB5T-KY03TWS BLUETOOTH ADPHONE

KY03 User Guide (1 • Do not use the earbuds at a high volume for any extended period. • To avoid hearing damage, use your earbuds at a comfortable, moderate volume level. • Turn the volume down on your device before placing the earbuds in/on your ears, then turn the volume up gradually until you reach a comfortable listening level. • Do not use the earbuds while driving or you are unable to hear ambient sound, so as to avoid danger. • Focus on your safety and that of others if you use the earbuds while engaging in any activity requiring your attention, e.g., while riding a bicycle or walking in or near traffic, a construction site or railroad and follow applicable laws regarding earbuds use, etc. • Remove the earbuds or adjust your volume to ensure you can hear surrounding sounds, including alarms and warning signals. • If you feel the earbuds generate heat or can't hear sound, please remove them immediately. • Do not use the phone adapter to connect the earbuds and airplane seat sockets, so as to avoid injury or property damage caused by the overheating. • Do not make unauthorized alterations to this product. • Never attempt to disassemble or alter the product in any way. • Use this product only with an agency approved power supply which meets local regulatory requirements (e.g., UL, CSA, VDE, CCC). • If the battery leaks, please do not contact with your skin or eyes. If contact occurs, please consult a doctor immediately. • Do not expose products containing batteries to excessive heat (e.g. from storage in direct sunlight, fire or the like). • Wipe off sweat from the earbuds and the charging case before charging. • IPX5 is not a permanent condition, and resistance might decrease as a result of normal wear. 1. Please read these instructions carefully. 2. Please keep this instruction manual in a proper place. 3. Please pay attention to all warnings. 4. Please follow all instructions described in this manual. 5. Do not use the product at a place where there is water or moisture. 6. Please wipe clean with a dry cloth. 7. Only use attachments/accessories specified by the manufacturer. 8. If you have any question or inquiry about maintenance, please consult with qualified personnel. If there is any damage to the product, please contact the related personnel for repairing, such as damaged power cord or plug, spillage of liquid or objects, exposure to moisture, or dampness, improper work or external causes such as from a collision. -1- Contains small parts which may be a choking hazard. Not suitable for children under age 3. This product contains magnetic material. Consult your physician on whether this might affect your implantable medical device. To avoid harm your hearing, do not listen at high volume for a long time. Please adjust the volume to a safe range. If the earbuds volume is too high, the use time should be shortened. E-mail: [email protected] Phone: +1(929)359-6668 (Mon-Fri 9:00 a.m. to 17:30 p.m. PST) Recommend Website: https://www.cowinaudio.com (Support live chat) Facebook: https://www.facebook.com/cowinelectronics Instagram: https://www.instagram.com/cowinaudio Youtube: https://www.youtube.com/channel/UCQIHuG8eYKa8AFyzOa98RiA Twitter: https://twitter.com/cowinaudio -2- • Do not drop, squeeze, bend or use excessive force to the product. • Do not place the product in a damp, cold, extreme environment or for a prolonged period of time. Excessively high or low temperature may cause a fire / explosion of the battery. Keep away from moisture condition, in order to prevent damage of the built-in circuits. • Do not wipe the product with volatile, irritating liquids. The best way is to clean with a soft cloth or a professional leather cleaner. • Do not disassemble the product by yourself. Otherwise, it may result in a short circuit, fire or electric shock. If you need to replace any part of the product resulting from normal wear and tear or cracking, etc., please contact the merchant. • This product contains magnetic material. Keep the product away from magnetic sensitive products (such as credit cards and video screens) to prevent damage. Product Name: Wireless Bluetooth Earbuds Product Model: KY03 BT Version: V5.0. Support HFP/HSP/A2DP/AVRCP/SPP/PBAP Battery capacity: 400mAH/Single earbud 70mAH Working time: Music playback 6H, talk time 7H Charging time: Charging case 1.5H, earbuds 1H Working current: 12mA Voice support: Status prompt Waterproof rating: IPX5 -3- Earbuds (left x1 right x1) Earbuds charging case x1 USB cable x1 Ear tips x 3 pairsL/M/S size User guide x1 User guide Microphone Touch panel Ear tips Status indicator light PC or adapter USB port 1. Charge the battery with the provided USB cable. When charging the product, LED light indicator flashes blue. 2. When the battery is fully charged, the light is off. The charging time is about 1.5 hours. -4- This product adopts the magnet contact charging method. 1. Put the earbuds into the charging case and close the cover to charge. When processing this step, the earbuds LED light indicator solid in red 2. The charging starts automatically and it takes about 1 hour for a full charge. 3. When the battery is fully charged, the LED light is off. 1. Please check the "L" and "R" (See details of pairing method on the manual) 2. Put the earbuds on your ears. Please adjust the angle according to your ears and make sure they fit in the ear securely and comfortably. Charge the charging caseCharging mode When charging the charging case, the indicator flashes blue. There are 4 LED lights representing battery level. Single press the power switch on the charging case to check the battery level. At the same time, it can charge the earbuds. After fully charged, 4 LED lights become solid. Charge the earbuds with the charging case Discharging mode When you charge earbuds with the charging case, the charging case LED lights flash in blue to display the charging case battery level, until earbuds full charged. Type-C port for charging the produ…

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Differences Description We Shenzhen MeiDong Acoustics Co., LTD state: Product： TWS BLUETOOTH ADPHONE Model Name： KY03, KY03A, KY03B, KY03C, KY03D, KY03E, KY03F Brand Name： Cowin FCC ID: 2AB5T-KY03 The electrical circuit design, layout, components used and internal wiring for above models are identical, only different in model name and colors. Signatory Date 2020-01-09 Signature Name: Huang hua Title: Manager Company: Shenzhen MeiDong Acoustics Co., LTD Address: Cell B, 3th Floor, Tower B, Hongzhuyongqi Technology Park, Lezhujiao, Xixiang, Baoan,Shenzhen, Guangdong, China

C5266091_X8_Ed.1 1/1 Letter of Authorization Shenzhen MeiDong Acoustics Co., LTD Company: Shenzhen MeiDong Acoustics Co., LTD Address: Cell B, 3th Floor, Tower B, Hongzhuyongqi Technology Park, Lezhujiao, Xixiang, Baoan,Shenzhen, Guangdong, China Product Name: TWS BLUETOOTH ADPHONE Model Number: KY03, KY03A, KY03B, KY03C, KY03D, KY03E, KY03F FCC Identifier: 2AB5T-KY03 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Huang hua Date:2020/01/09 Title: Manager Signature of applicant:

C5266091_X10_Ed.1 1/1 Shenzhen MeiDong Acoustics Co., LTD Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 Date: 2020-01-09 Subject: Request for Confidentiality FCC ID: 2AB5T-KY03 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality ID Label/Location No No Attestation Statement No No External Photos No Block Diagram Schematics Test Report No No Test Setup Photos No User’s Manual Internal Photos Parts List / Tune Up RF Exposure Info Operational Description Cover Letter(s) No No SDR Software / Security Info No Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Huang hua Title: Manage

Page 1 of 3 Report No.: STS1912291 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: KY03 Photo 1 Photo 2 Page 2 of 3 Report No.: STS1912291 Photo 3 Photo 4 Page 3 of 3 Report No.: STS1912291 Photo 5 Photo 6

FCC Label&Location FCC ID: 2AB5T-KY03 Size: 0.5cm*2cm Printing, white type FCC ID: 2AB5T-KY03

Page 1 of 4 Report No.: STS1912291 APPENDIX-PHOTOGRAPHS OF EUT CONSTRUCTIONAL DETAILS Model: KY03 Photo 1 Photo 2 Photo 3 BT Antenna Page 2 of 4 Report No.: STS1912291 Photo 4 Page 3 of 4 Report No.: STS1912291 Photo 5 Photo 6 Page 4 of 4 Report No.: STS1912291 Photo 7

FCC ID : 2AB5T-KY03 RF EXPOSURE EVALUATION METHOD 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. FCC ID : 2AB5T-KY03 Maximum measured transmitter power. BT5.0+EDR The Worst Case Mode 2402-2480MHz Detector PEAK GFSK -1±1dBm π/4-DQPSK -1±1dBm 8DPSK 0±1dBm Remark: The worst case gain of the antenna is 2.5dBi. 2.5dBi logarithmic terms convert to numeric result is nearly 1.778 GFSK2.402-1.490 10.3100 3 π/4-DQPSK2.402-1.070 10.3100 3 8DPSK2.402-0.931 1.2589254120.3902 3 Mode Limit M ax im um Peak Conduc ted O utput Power (dBm ) frequency (GHz) Tune up Power(dBm) Tune up Power (mW) Result Threshold at which no SAR required is0.3902≤ 3.0 for 1-g SAR, Separation distance is 5mm.

Any reproduction of this document must be done in full. No single part of this document may be reproduced without permission from STS, All Test Data Presented in this report is only applicable to presented Test sample. Shenzhen STS Test Services Co., Ltd. A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China TEL: +86-755 3688 6288 FAX: +86-755 3688 6277 E-mail:[email protected] P RADIO TEST REPORT Report No: STS1912291W02 Issued for Shenzhen MeiDong Acoustics Co., LTD Cell B, 3th Floor, Tower B, Hongzhuyongqi Technology Park, Lezhujiao, Xixiang, Baoan, Shenzhen, Guangdong, China Product Name: TWS BLUETOOTH ADPHONE Brand Name: Cowin Model Name: KY03 Series Model: KY03A, KY03B, KY03C, KY03D, KY03E, KY03F FCC ID: 2AB5T-KY03 Test Standard: FCC Part 15.247 S T L A B S Page 2 of 73 Report No.: STS1912291W02 TEST RESULT CERTIFICATION Applicant’s Name ................... : Shenzhen MeiDong Acoustics Co., LTD Address .................................. : Cell B, 3th Floor, Tower B, Hongzhuyongqi Technology Park, Lezhujiao, Xixiang, Baoan, Shenzhen, Guangdong, China Manufacture's Name .............. : Shenzhen MeiDong Acoustics Co., LTD Address .................................. : Cell B, 3th Floor, Tower B, Hongzhuyongqi Technology Park, Lezhujiao, Xixiang, Baoan, Shenzhen, Guangdong, China Product Description Product Name ........................ : TWS BLUETOOTH ADPHONE Brand Name ......................... : Cowin Model Name ........................... : KY03 Series Model .......................... : KY03A, KY03B, KY03C, KY03D, KY03E, KY03F Test Standards ....................... : FCC Part15.247 Test Procedure ....................... : ANSI C63.10-2013 This device described above has been tested by STS, the test results show that the equipment under test (EUT) is in compliance with the FCC requirements. And it is applicable only to the tested sample identified in the report. This report shall not be reproduced except in full, without the written approval of STS, this document may be altered or revised by STS, personal only, and shall be noted in the revision of the document. Date of Test ............................... : Date of receipt of test item ......... : 19 Nov. 2019 Date (s) of performance of tests : 19 Nov. 2019 ~ 25 Dec. 2019 Date of Issue ............................. : 25 Dec. 2019 Test Result ................................. : Pass Testing Engineer : (Chris Chen) Technical Manager : (Sunday Hu) Authorized Signatory : (Vita Li) Page 3 of 73 Report No.: STS1912291W02 Table of Contents Page 1. SUMMARY OF TEST RESULTS 6 1.1 TEST FACTORY 7 1.2 MEASUREMENT UNCERTAINTY 7 2. GENERAL INFORMATION 8 2.1 GENERAL DESCRIPTION OF THE EUT 8 2.2 DESCRIPTION OF THE TEST MODES 10 2.3 TABLE OF PARAMETERS OF TEXT SOFTWARE SETTING 10 2.4 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 11 2.5 DESCRIPTION OF NECESSARY ACCESSORIES AND SUPPORT UNITS 12 2.6 EQUIPMENTS LIST 13 3. EMC EMISSION TEST 14 3.1 CONDUCTED EMISSION MEASUREMENT 14 3.2 RADIATED EMISSION MEASUREMENT 18 4. CONDUCTED SPURIOUS & BAND EDGE EMISSION 30 4.1 LIMIT 30 4.2 TEST PROCEDURE 30 4.3 TEST SETUP 30 4.4 EUT OPERATION CONDITIONS 30 4.5 TEST RESULTS 31 5. NUMBER OF HOPPING CHANNEL 46 5.1 LIMIT 46 5.2 TEST PROCEDURE 46 5.3 TEST SETUP 46 5.4 EUT OPERATION CONDITIONS 46 5.5 TEST RESULTS 47 6. AVERAGE TIME OF OCCUPANCY 48 6.1 LIMIT 48 6.2 TEST PROCEDURE 48 6.3 TEST SETUP 48 6.4 EUT OPERATION CONDITIONS 48 6.5 TEST RESULTS 49 7. HOPPING CHANNEL SEPARATION MEASUREMEN 55 7.1 LIMIT 55 Page 4 of 73 Report No.: STS1912291W02 Table of Contents Page 7.2 TEST PROCEDURE 55 7.3 TEST SETUP 55 7.4 EUT OPERATION CONDITIONS 55 7.5 TEST RESULTS 56 8. BANDWIDTH TEST 62 8.1 LIMIT 62 8.2 TEST PROCEDURE 62 8.3 TEST SETUP 62 8.4 EUT OPERATION CONDITIONS 62 8.5 TEST RESULTS 63 9. OUTPUT POWER TEST 69 9.1 LIMIT 69 9.2 TEST PROCEDURE 69 9.3 TEST SETUP 70 9.4 EUT OPERATION CONDITIONS 70 9.5 TEST RESULTS 71 10. ANTENNA REQUIREMENT 72 10.1 STANDARD REQUIREMENT 72 10.2 EUT ANTENNA 72 Page 5 of 73 Report No.: STS1912291W02 Revision History Rev. Issue Date Report NO. Effect Page Contents 00 25 Dec. 2019 STS1912291W02 ALL Initial Issue Page 6 of 73 Report No.: STS1912291W02 1. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: KDB 558074 D01 15.247 Meas Guidance v05r02. FCC Part 15.247,Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS -- 15.247(a)(1) Hopping Channel Separation PASS -- 15.247(a)(1)&(b)(1) Output Power PASS -- 15.209 Radiated Spurious Emission PASS -- 15.247(d) Conducted Spurious & Band Edge Emission PASS -- 15.247(a)(iii) Number of Hopping Frequency PASS -- 15.247(a)(iii) Dwell Time PASS -- 15.247(a)(1) Bandwidth PASS -- 15.205 Restricted bands of operation PASS -- Part 15.247(d)/part 15.209(a) Band Edge Emission PASS -- 15.203 Antenna Requirement PASS -- NOTE: (1) ‘N/A’ denotes test is not applicable in this Test Report. (2) All tests are according to ANSI C63.10-2013. Page 7 of 73 Report No.: STS1912291W02 1.1 TEST FACTORY SHENZHEN STS TEST SERVICES CO., LTD Add. : A 1/F, Building B, Zhuoke Science Park, No.190 Chongqing Road, HepingShequ, Fuyong Sub-District, Bao’an District, Shenzhen, Guang Dong, China FCC test Firm Registration Number: 625569 IC test Firm Registration Number: 12108A A2LA Certificate No.: 4338.01 1.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ±U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2, providing a level of confidence of approximately 95 %. No. Item Uncertainty 1 RF output power, conducted ±0.68dB 2 Unwanted Emissions, conducted ±2.988dB 3 All emissions, radiated 30-1GHz ±6.7dB 4 All emissions, radiated 1G-6GHz ±5.5dB 5 All emissions, radiated>6G ±5.8dB 6 Conducted Emission (9KHz-150KHz) ±4.43dB 7 Conducted Emission (150KHz-30MHz) ±5dB Page 8 of 73 Report No.: STS1912291W02 2. GENERAL INFORMATION 2.1 GE…

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Page 1 of 2 FCC ID: 2AB5T-KY03 DSS Setup photo Model name: KY03 DSS conduction DSS radiation L Page 2 of 2 FCC ID: 2AB5T-KY03 DSS radiation H