2BBWH-MD528Bluetooth headset

MD528/538 无线游戏耳机 使用说明书 使用本产品请仔细阅读说明书，妥善保存以备参考 配置参数 配对名称：MD528/538 待机时间：240小时 芯片版本：5.3 通话时间:约48H 充电接口：type-c 充电时间：约1-2H 产品介绍 1.充电盒*1 2.左右耳机*1 3.数据线*1 4.产品说明书*1 双耳配对连接 1.拿起耳机自动开机互配 ，互配成功，主耳机白绿灯交替闪烁，副耳机LED灯熄灭( 如若没有互配只需双击任意一台耳机即可互配）。 2.打开设备蓝牙列表搜索“MD528/538”; 3.点击完成连接(LED灯熄灭)。 如果连接失败，将耳机放回充电盒后关盖，重复上述操作。 双耳同时离开设备到超出距离，耳机进入回连状态，3分钟内如果没有回连到设备， 双耳机则自动关机。 首次连接后，耳机重新开机后自动回连上一次配对设备（需手机蓝牙已打开） 12 操作方式 (1)拿起耳机立即自动开机，亮1秒绿灯后白绿灯交替闪烁。 (2)耳机关机状态时，按住开机键1-2秒，语音提示“开机”亮1秒绿灯后白绿灯交替闪烁。 1.开机 2.关机 (1)将耳机放回充电盒并关上盖，耳机充电时会自动关机。 (2)在耳机开机情况下，长按开机键3秒耳机关机，语音提示关机。 3:清除TWS配对记录 当有一台损坏不能开机，能开机的那台耳机开机未连接手机状态下三击开机键。 重新开机双击即可连接新的耳机组成TWS。 接听/挂断 电话 连接状态下 L/R耳机单击一次 语音助手 长按左边功能键 2秒“嘟”一声唤起Siri 播放下一曲 音乐状态下 右耳（R）单击三次 音量+ 音乐状态下 右耳(R)单击二次 播放/暂停 音乐 连接状态下 L/R耳机单击一次 拒接电话 长按两秒 播放上一曲 音乐状态下 左耳（L）单击三次 音量- 音乐状态下 左耳（L）单击二次 操作说明 Made in China 合格证 检查员：08 产品保修卡 该卡为产品保修凭证，请妥善保管 不良现象 MD528MD538 L R MD528/538 Bluetooth headset AN INSTRUCTION MANUAL MD528 MD538 Please read the manual carefully and keep it for reference CONFIGURATION PARAMETER Pairing Name: md528/538standby time: 240 hours Chip version: 5.3t alk time: About 48H Charging interface: type -Ccharging time: About 1-2h PRODUCT INTRODUCTION 1.Charging box*12.Left and right headphones*1 3.data line*14.Product specification*1 1 BINAURAL PAIRING CONNECTION 1.Pick up the headphones and automatically start the mutual configuration. The mutual configuration is successful. The white and green lights of the main headphones flash alternately, and the LED lights of the auxiliary headphones go out (if there is no mutual configuration, just double-click any headphones to configure each other). 2.Open the Bluetooth device list and search for "md528/538"; 3.Click to complete the connection (LED light goes out). If the connection fails, put the headset back into the charging box, close the cover and repeat the above operation. When both ears leave the device at the same time and exceed the distance, the headset enters the back connection state. If there is no back connection to the device within 3 minutes, the headset will automatically shut down. After the first connection, the headset will automatically connect back to the last paired device after it is restarted (if the Bluetooth of the mobile phone is turned on) 2 OPERATION MODE (1)Pick up the headset and start it automatically immediately. After the green light is on for 1 second, the white and green lights flash alternately. (2)When the headset is turned off, press and hold the power on button for 1-2 seconds, and the voice prompt "power on" is on for 1 second, and the green light flashes alternately after the green light. 1.POWER ON 2.SHUT DOWN (1)Put the headset back into the charging box and close the cover. The headset will turn off automatically when charging. (2)When the headset is turned on, long press the start button for 3 seconds the headset will be turned off, and the voice prompt will be turned off. 3:CLEAR TWS PAIRING RECORD When one headset is damaged and cannot be turned on, the headset that can be turned on is turned on, and the mobile phone is not connected, press the start button three times. Restart and double-click to connect a new headset to form TWS. Answer / end a call Connected L / R headset click once Voice assistant Long press the left function key A two second beep evokes Siri Play the next song Music state Right ear (R) click three times Volume+ Music state Right ear (R) click twice Play / pause music Connected L / R headset click once Refuse to answer the phone Press and hold for two seconds Play the previous song Music state Left ear (L) click three times Volume- Music state Left ear (L) click twice OPERATING INSTRUCTIONS Made in China certificate inspector：08 Product warranty card This card is the product warranty certificate, please keep it properly Undesirable phenomenon L R Warning: This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1 ) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Changes or modifications not expressly approved by the party responsible for compliance could void the user' s authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: --Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver --Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. --Consult the dealer or an experienced radio/TV technician for help NOTE: This device and its antenna(s) must not be co-located or operation in conjunction with any other antenna or transmitter. RF exposure: The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Section Company n Address: 40 Shenzhen, Product N a FCCID: 2B Model(s): M 2.911(d)(5 ) We, [Shen z which autho  Pro  Ide n Yours sinc e Name: Li Z Title: Gene Company n Signature: NOTE 1 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s She 2.911(d) name: Shen 05, Building China ame: Blueto BWH-MD5 2 MD528, MD )(i) Equipm zhen SHUK orization is hibited fro m ntified as an erely, Zebin ral Manag e name: Shen ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t nzhen S )(5)(i) Ce nzhen SHUK g A, Lvchen oth heads e 28 538, Y17, S mentType KE Technolo sought thro m receiving n equipmen er nzhen SHUK of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the SHUKE T ertificatio KE Technol g Science a et S230, MINI1 ogy Trading ough certific an equipme nt type in the KE Technolog and Services C list SearchResul t 63 published o nts/2023/02/06 Technol on – Equi ogy Trading and Techno 13, S518, S Co.,Ltd] (“t cation is not ent authoriz e “Covered gy Trading C Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ ogy Tra 2. ipmentTy g Co.,Ltd ology Park, B SK19, SK18 the applican t: zation pursu List” NOTE 1 Co.,Ltd ection 2 of Th witch=P&id=32 /protecting-ag ding Co 911 (d)(5)(i) Eq ype Bantian Str , D20, JS2 7 nt”) certify th uant to § 2.9 e Secure Netw 5672 ainst-national- o.,Ltd quipment Type A eet, Longga 70 hat the equ 903; of the F Date: Jun works Act, ava -security-threa Attestation v1.2 ang District ipment for FCC rules. e 30, 2023 ailable at ats-to-the-com 2 , m

Section Company n Address: 40 Shenzhen, Product N a FCCID: 2B Model(s): M 2.911(d)(5 ) We, [Shenz the filing of establishe d equipment. Yours sinc e Name: Li Z Title: Gene Company n Signature: NOTE 1 Delete option NOTE 2 “Covered List https://www.f c References; 1) 986446 D 0 https://apps.fc 2) Federal R e https://www.fe munications-s She 2.911(d) name: Shen 05, Building China ame: Blueto BWH-MD5 2 MD528, MD )(ii) Applica zhen SHUK fthe applica d pursuant t erely, Zebin ral Manag e name: Shen not applicable ”; is the List o cc.gov/supplyc 01 Covered Eq cc.gov/oetcf/kd egister docume ederalregister. supply-chain-t nzhen S )(5)(ii) Ce nzhen SHUK g A, Lvchen oth headse 28 538, Y17, S ant filing KE Technolo ation, the ap to §1.50002 er nzhen SHUK e to this applic of Equipment a chain/covered quipment v01 db/forms/FTS ent 2022-2826 gov/documen hrough-the SHUKE T ertificatio KE Technol g Science a t S230, MINI1 ogy Trading pplicant is n 2 of this cha KE Technol cation. and Services C list SearchResul t 63 published o nts/2023/02/06 Technol on – App ogy Trading and Techno 13, S518, S Co.,Ltd] (“t not identifie apter, as an ogy Tradin g Covered By S tPage.cfm?sw on 02/06/23 6/2022-28263/ ogy Tra plicant (C g Co.,Ltd ology Park, B SK19, SK18 the applican ed NOTE 1 on t entity prod g Co.,Ltd ection 2 of Th witch=P&id=32 /protecting-ag ding Co 2.911 (d)(5 Covered L Bantian Str , D20, JS2 7 nt”) certify th the “Covere ucing cover Da e Secure Netw 5672 ainst-national - o.,Ltd 5)(ii) Applicant A List ) eet, Longga 70 hat, as of th ed List” NOTE 2 red commu ate: June 30 works Act, ava -security-threa Attestation v1.3 ang District he date of 2 , nications 0, 2023 ailable at ats-to-the-com 3 , m

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Annex A External Photos Report No.:HK2306262672-1E/2E Page 1 of 4 Report No.:HK2306262672-1E/2E Page 2 of 4 Report No.:HK2306262672-1E/2E Page 3 of 4 Report No.:HK2306262672-1E/2E Page 4 of 4

FCC ID LABEL: Ca. 5mm x 15mm label location FCC ID: 2BBWH-MD528

Annex B Internal Photos Report No.:HK2306262672-1E/2E Page 1 of 5 Antenna Report No.:HK2306262672-1E/2E Page 2 of 5 Report No.:HK2306262672-1E/2E Page 3 of 5 Antenna Report No.:HK2306262672-1E/2E Page 4 of 5 Report No.:HK2306262672-1E/2E Page 5 of 5

FCC RF Exposure EUT Description: Bluetooth headset Model No.: MD528 FCC ID: 2BBWH‐MD528 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v06 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: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Frequency (MHz) Output power （dBm） Tune Up Power （dBm） Max Tune Up power dBm/mW Min test separati on distance mm Result Limit (mW/cm 2 ) SAR Test Exclusion 2402 1.56 1±1 2/1.585 5 0.491 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2306262672‐1E/2E, antenna gain= 3dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine RF Exposure test exclusion. The test exclusion threshold is 0.491 which is<= 3, RF Exposure testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f (GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

SymbolsLWTA Dimensions 1.60±0.200.80±0.200.80±0.200.30±0.10 NumberTerminalName ① INPUT ② NC Dimensions(Unit: mm) w ①② ( Side View) ( Bottom View) ( Top View) A T L HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page1 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 Applications 1.Bluetooth 2.WirelessLAN 3.ISM band 2.4GHz wirelessapplications Features 1.Surfacemounteddeviceswithasmalldimensionof1.6×0.8×0.8mmmeetfutureminiaturization trend. 2.EmbeddedandLTCC(lowtemperatureco-firedceramic)technologyisabletointegratewith systemdesignaswellasbeatifyingthehousingoffinalproduct. 3.Highstabilityandlowtolerance. P/N:HY160808 SRF07 MatchingCircuits P/N:HY160808 SRF07 设计指导： 1、原则上，净空区左侧边缘距离板边的间距W1应该尽量大，且 注意与底部电池的间距。 2、主净空区的宽度W2最优为1.5mm~2.5mm。 3、凹槽的长度L的长度为2mm~5mm。 4、0603天线和0603天线底部的两颗物料可以上下互换位置。 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page2 1 W=2 1 W2=2 1.5 Feeding line (微带线) 2 5 0201/0402 footprint 0603 footprint 0201/0402 footprint 0.5 Unit:mm 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. 2 L=4 W1 Application example-1 P/N:HY160808 SRF07 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page3 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. Application example-2 P/N:HY160808 SRF07 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page4 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. ElectricalCharacteristics CharacteristicCurves FeatureSpecification 1 Centralfrequency2.45GHz&5.5GHz 2 Bandwidth>100MHz 3 Peak gain>3dBi 4 VSWR<2 5 PolarizationLinear 6 AzimuthbeamwidthOmnidirectional 7 Impedance50Ω P/N:HY160808 SRF07 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page5 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. RadiationPattern Y-ZPlane X-ZPlane coordinates： 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page6 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. P/N:HY160808 SRF07 3D RadiationPattern Frequency 2450MHz5500MHz Avg.gain-0.85-1.30 Peakgain3.03.5 Efficiency82%78% 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page7 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. P/N:HY160808 SRF07 Temperature：40±2°C Humidity：90~95%RH Duration：500h Recovery conditions：Room temperature Recovery Time：24h (Class1) or 48h (Class2) Test Temperature Operating Temperature Temperature RelativeHumidity 25°C±3°C -25°C~+85°C 5~40°C 20~70% Notenoughsolder Weak holding forcemay cause bad connection between the chipandPCB. RecommendedSolderingAmounts The optimal solder fillet amounts forre-flowsoldering 天线厚度 以下 The optimal solder fillet amounts for wavesoldering DependabilityTest Too much solder Cracks tend to occur due to large stress. MoistureProof OptimumSolderAmount forReflowSoldering Solderability At least 95% of the terminal electrode is covered by newsolder. Preheating conditions:80 to 120°C;10~30s. Solder Tem p e r at u r e :2 3 5 ±5°C Duration:2 ±0.5s , Solder Tempe r ature:24 5±5°C Du rat ion:2±0.5s 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthepriorwrittenconsentofHanyangAntennaDesignCo.Ltd. Page8 汉阳天线设计有限公司 HanyangAntenna Design Co. Ltd. P/N:HY160808 SRF07 10±1S AppliedForce:5NDuration:10±1S Preheating conditions: up-category temperature, 1h Recovery time:24±1h InitialMeasurement Cycling Times: 5 times, 1 cycle, 4steps: Preheating80to120°C;10~30s.SolderTemperature:235±5°C;Duration:2±0.5s;SolderTemperature:245±5°C Duration:2±0.5s;Preheating100to200°C;10±2min. SolderTemperature:265±5°C;Duration:10±1s Cleanthecapacitorwithsolventandexamineitwitha10X(min.)microscope. RecoveryTime:24±2h Recoverycondition:Roomtemperature Test Board: Al 2 O 3 orPCBWarp:1mm Speed:0.5mm/sec. Unit:mm Themeasurementshouldbemadewiththeboardinthe bendingposition. Resistance to Soldering Heat ResistancetoFlexureofSubstrate Temperature CycleTest 深圳市宝安区前进二路宝运达物流信息大厦12A11 青岛市崂山区松岭路399号海信产业园A1号楼606 电话：0755-23069700 传真：0755-23069700 HanyangAntennaDesignCo.Ltd.haspossessionofproprietaryinformationprovidedinthisreportand thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoa…

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Page 1 of 47 Report No.: HK2306262672-1E FCC Test Report FCC PART 15 SUBPART C 15.247 Test Report On Behalf of Shenzhen SHUKE Technology Trading Co.,Ltd For Bluetooth headset Model No.: MD528, MD538, Y17, S230, MINI13, S518, SK19, SK18, D20, JS270 FCC ID: 2BBWH-MD528 Prepared For: Shenzhen SHUKE Technology Trading Co.,Ltd 405, Building A, Lvcheng Science and Technology Park, Bantian Street, Longgang District, Shenzhen, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: June 25, 2023 ~ June 29, 2023 Date of Report: June 29, 2023 Report Number: HK2306262672-1E Page 2 of 47 Report No.: HK2306262672-1E Test Result Certification Applicant’s Name .................. : Shenzhen SHUKE Technology Trading Co.,Ltd Address .................................. : 405, Building A, Lvcheng Science and Technology Park, Bantian Street, Longgang District, Shenzhen, China Manufacture's Name ............. : Shenzhen SHUKE Technology Trading Co.,Ltd Address .................................. : 405, Building A, Lvcheng Science and Technology Park, Bantian Street, Longgang District, Shenzhen, China Product Description Trade Mark ............................. : N/A Product Name ........................... : Bluetooth headset Model and/or type reference...: MD528, MD538, Y17, S230, MINI13, S518, SK19, SK18, D20, JS270 Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test .................................... . Date (s) of Performance of Tests .... . June 25, 2023 ~ June 29, 2023 Date of Issue .................................... June 29, 2023 Test Result ........................................ Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Technical Director Page 3 of 47 Report No.: HK2306262672-1E Table of Contents Page 1. Summary .............................................................................................................................................................. 5 1.1. Test Standards ......................................................................................................................................................... 5 1.2. Test Description ....................................................................................................................................................... 5 1.3. Information of the Test Laboratory ......................................................................................................................... 6 1.4. Statement of the Measurement Uncertainty .......................................................................................................... 6 2. General Information ............................................................................................................................................. 7 2.1. Environmental Conditions ....................................................................................................................................... 7 2.2. General Description of EUT ..................................................................................................................................... 7 2.3. Description of Test Modes and Test Frequency ....................................................................................................... 8 2.4. Equipments Used during the Test ............................................................................................................................ 9 2.5. Related Submittal(s) / Grant (s) ............................................................................................................................. 10 2.6. Modifications ........................................................................................................................................................ 10 2.7. Description of Test Setup ....................................................................................................................................... 10 3. Test Conditions and Results ................................................................................................................................. 11 3.1. Conducted Emissions Test ..................................................................................................................................... 11 3.2. Radiated Emissions and Band Edge ....................................................................................................................... 14 3.3. Maximum Peak Conducted Output Power ............................................................................................................ 25 3.4. 20dB Bandwidth .................................................................................................................................................... 26 3.5. Frequency Separation ........................................................................................................................................... 29 3.6. Number of Hopping Frequency ............................................................................................................................. 31 3.7. Time of Occupancy (Dwell Time) .......................................................................................................................... 33 3.8. Out‐of‐Band Emissions ....................................................................................................................…

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Page 1 of 47 Report No.: HK2306262672-2E FCC Test Report FCC PART 15 SUBPART C 15.247 Test Report On Behalf of Shenzhen SHUKE Technology Trading Co.,Ltd For Bluetooth headset Model No.: MD528, MD538, Y17, S230, MINI13, S518, SK19, SK18, D20, JS270 FCC ID: 2BBWH-MD528 Prepared For: Shenzhen SHUKE Technology Trading Co.,Ltd 405, Building A, Lvcheng Science and Technology Park, Bantian Street, Longgang District, Shenzhen, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: June 25, 2023 ~ June 29, 2023 Date of Report: June 29, 2023 Report Number: HK2306262672-2E Page 2 of 47 Report No.: HK2306262672-2E Test Result Certification Applicant’s Name .................. : Shenzhen SHUKE Technology Trading Co.,Ltd Address .................................. : 405, Building A, Lvcheng Science and Technology Park, Bantian Street, Longgang District, Shenzhen, China Manufacture's Name ............. : Shenzhen SHUKE Technology Trading Co.,Ltd Address .................................. : 405, Building A, Lvcheng Science and Technology Park, Bantian Street, Longgang District, Shenzhen, China Product Description Trade Mark ............................. : N/A Product Name ........................... : Bluetooth headset Model and/or type reference...: MD528, MD538, Y17, S230, MINI13, S518, SK19, SK18, D20, JS270 Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test .................................... . Date (s) of Performance of Tests .... . June 25, 2023 ~ June 29, 2023 Date of Issue .................................... June 29, 2023 Test Result ........................................ Pass Prepared by: Project Engineer Reviewed by: Project Supervisor Approved by: Technical Director Page 3 of 47 Report No.: HK2306262672-2E Table of Contents Page 1. Summary .............................................................................................................................................................. 5 1.1. Test Standards ......................................................................................................................................................... 5 1.2. Test Description ....................................................................................................................................................... 5 1.3. Information of the Test Laboratory ......................................................................................................................... 6 1.4. Statement of the Measurement Uncertainty .......................................................................................................... 6 2. General Information ............................................................................................................................................. 7 2.1. Environmental Conditions ......................................…

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