2AYJ7CHE-645Wireless Earphones

CHE-645InstructionManual FirstUseNote Ensurethewirelessheadphonearefullchargedbeforeyoustarttouse. HowtoWear Selectthebestfittingeartipandthenwearheadphone.Makesurethatitfitssnugly andseamlesslyinsideyoureartogetthebestsoundandNoiseCanceling performance. PowerOn：Longpress5Stheleftorrightearbuds. PowerOff 1、Puttheearbudsintocase,itwillpoweroff； 2、Itwillpoweroffwithoutconnectionandoperationofyourphoneafter3min； HowtoConnect Forthefirsttimepairing,Longpress3Sthepowerbuttontopoweronandsearch bluetooth“CHE-645”onyourphone,andtaptoconnect. (headphonewillautore-connecttothelasttimedeviceinconnectivityrecords). HowtoCharge ChargingtheheadphonewithincludedcableandyourDC5V/1Aadapter(PCUSB portorotherDC5Valsocompatible). FunctionalOperation Music PressX1:theleftorrightearbuds. PressX2:theleftforprevioussong;therightfornextsong. LongPress2s：thelefttoreducethevolume(-);therighttoincreasethevolume(+). IncomingCall PressX1:theleftorrightearbudstoanswer/endacall. PressX2:eitherearbudtorejectacall. SiriVoiceAssistant PressX3:eitherearbudtoactivateSirivoiceassistant. FCCSTATEMENT: ThisdevicecomplieswithPart15oftheFCCRules.Operationissubjecttothe followingtwoconditions: Thisdevicemaynotcauseharmfulinterference,and Thisdevicemustacceptanyinterferencereceived,includinginterferencethatmay causeundesiredoperation. Warning:Changesormodificationsnotexpresslyapprovedbythepartyresponsible forcompliancecouldvoidtheuser'sauthoritytooperatetheequipment. NOTE:Thisequipmenthasbeentestedandfoundtocomplywiththelimitsfora ClassBdigitaldevice,pursuanttoPart15oftheFCCRules.Theselimitsaredesigned toprovidereasonableprotectionagainstharmfulinterferenceinaresidential installation.Thisequipmentgeneratesusesandcanradiateradiofrequencyenergy and,ifnotinstalledandusedinaccordancewiththeinstructions,maycauseharmful interferencetoradiocommunications.However,thereisnoguaranteethat interferencewillnotoccurinaparticularinstallation.Ifthisequipmentdoescause harmfulinterferencetoradioortelevisionreception,whichcanbedeterminedby turningtheequipmentoffandon,theuserisencouragedtotrytocorrectthe interferencebyoneormoreofthefollowingmeasures: Reorientorrelocatethereceivingantenna. Increasetheseparationbetweentheequipmentandreceiver. Connecttheequipmentintoanoutletonacircuitdifferentfromthattowhichthe receiverisconnected. Consultthedealeroranexperiencedradio/TVtechnicianforhelp. RFwarningstatement: ThedevicehasbeenevaluatedtomeetgeneralRFexposurerequirement.Thedevice canbeusedinportableexposureconditionwithoutrestriction. Label WirelessOpenEarphonesmini ModelNo:CHE-645 Capacity:3.7V/320mAh（1.184Wh）Input:5V/300mA ティ・ア-ル・エイ株式会社MadeinChina FCCID：2AYJ7CHE-645

Federal Communications Commission Authorization and Evaluation Division Equipment Authorization B「anch 7435 Oakland Mills Road Columbia, MD 21046 3/10/2023 U.S. A� nation TRA Company Ltd. acknowledges their consent fo「 the following contact located in the United States to act as their agent for service of process for the equipment for which authorization is sought ( FCC ID: ) 2AYJ7CHE-645. Name and company of U.S. agent: Cheero USA, Inc Physical U.S. address of agent: 2 48, E50thSt, Apt.2N, New York, NY 10022 FRN of U.S. agent: 0033510017 Email add「ess of U.S. agent: [email protected] Cheero USA, Inc. acknowledges their obligation to accept service of process on behalf of TRA Comp any Ltd. TRA Company Ltd. accepts its obligation to maintain an agent for service of process in the United States fo「 no less than one year after either the grantee has permanently terminated all marketing and i mportation of the applicable equipment within the U.S., o「 the conclusion of any Commission于elated administrative or」udicial proceeding involving the equipment, whichever is later B y signing this fo「m, we confirm the above and that we are aware of the application requirements li sted unde「§ 2.911 ( d ) ( 7 ) . Sincerely, EDA ' n,(L)(p) L 16 · z:- 1u�'av - sn [J�potu] - 81' Si I 归 nature Wiktor Fronczak Manager TRA Company Ltd. ） -上吩叮 Signature Susumu Suwazono Manager Cheero USA, Inc. The infonnation provided in this letter is based on the referenced rnle parts of Title 4 7 of the CFR as well as KDB 986446 DO 1 An expiration date for this letter does not exist. In case the U.S. agent changes, the grantee is obi igated to notify the FCC

-TRACOMPANYLTD.- TheinformationprovidedinthisletterisbasedonthereferencedrulepartsofTitle47oftheCFRaswellasKDB986446D01. FederalCommunicationsCommission AuthorizationandEvaluationDivision EquipmentAuthorizationBranch 7435OaklandMillsRoad Columbia,MD21046 10/18/23 Towhomitmayconcern: We,[TRACOMPANYLTD.],herebycertifythattheequipmentforwhichauthorizationissought(FCC ID:[2AYJ7CHE-645])isnot“covered”equipmentprohibitedfromreceivinganequipment authorizationpursuantto§2.903oftheFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,wearenotidentifiedontheCovered List(https://www.fcc.gov/supplychain/coveredlist)asanentityproducing“covered”equipment. Bysigningthisform,weconfirmtheaboveandthatweareawareoftheapplicationrequirements listedunder§2.911(b)and(d)(5)and(6). Sincerely, Signature [WiktorFronczak] [Manager] [TRACOMPANYLTD.] 6 2 _ [ m o d e l ] C o v e r e d E q u _ 2 . 9 1 1 ( d ) ( 5 ) ( i ) a n d ( i i ) - U , V 0 2

Label location： The product is too small to place complete label information, so the label is placed in the user manual. Label：

ProjectNo.:18220WC301991Page 1 of 5 AppendixIII--InternalPhotograph ProjectNo.:18220WC301991Page 2 of 5 ProjectNo.:18220WC301991Page 3 of 5 ProjectNo.:18220WC301991Page 4 of 5 ProjectNo.:18220WC301991Page 5 of 5 ANT

RFEXPOSUREEVALUATION FCCID:2AYJ7CHE-645 AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeused toevaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF) Radiationasspecifiedin§1.1307(b): RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnot required,portabletransmitterswithoutputpowergreaterthantheapplicable lowthresholdrequireSARevaluationtoqualifyforTCBapproval. Channel (MHz) Maximum output power (dBm) Tuneup tolerance (dBm) MaxTuneUp Power(dBm) Distance (mm) Calculation results Limit Operating Mode 24020.140.14 ±1 1.1450.4033 GFSK 24410.790.79 ±1 1.7950.4723 24800.920.92±11.9250.4903 24021.011.01 ±1 2.0150.4923 π/4-DQPSK 24411.621.62 ±1 2.6250.5713 24801.801.80±12.850.6003 Result:NoStandaloneSARtestisrequired.

Page1of40 AppendixTestData ReportNo.:18220WC30199101TestSampleNo.:1-2-2 StartTestDate:2023.09.12FinishTestDate:2023.09.13 TestEngineer:Auditor: Temperature:25.3 °C RelativeHumidity:48% Pressure:102kPa AppendixA:20dBEmissionBandwidth TestResult TestModeAntennaFrequency[MHz] 20db EBW[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict DH5Ant1 24020.9602401.5412402.501------ 24410.9632440.5352441.498------ 24800.9392479.5472480.486------ 2DH5Ant1 24021.2872401.3732402.660------ 24411.3262440.3372441.663------ 24801.2812479.3762480.657------ Page2of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page3of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page4of40 2DH5_Ant1_2480 Page5of40 AppendixB:OccupiedChannelBandwidth TestResult TestModeAntennaFrequency[MHz] OCB[MHz] FL[MHz]FH[MHz]Limit[MHz]Verdict DH5Ant1 24020.858792401.57582402.4346------ 24410.877652440.56782441.4455------ 24800.867052479.56942480.4365------ 2DH5Ant1 24021.19312401.40832402.6014------ 24411.18262440.41292441.5955------ 24801.17392479.41652480.5904------ Page6of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page7of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page8of40 2DH5_Ant1_2480 Page9of40 AppendixC:Maximumconductedoutputpower TestResultPeak Test Mode AntennaFrequency[MHz] ConductedPeak Power[dBm] Conducted Limit[dBm] Verdict DH5Ant1 24020.14≤20.97PASS 24410.79≤20.97PASS 24800.92≤20.97PASS 2DH5Ant1 24021.01≤20.97PASS 24411.62≤20.97PASS 24801.80≤20.97PASS Page10of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page11of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page12of40 2DH5_Ant1_2480 Page13of40 AppendixD:Carrierfrequencyseparation TestResult TestModeAntennaFrequency[MHz]Result[MHz]Limit[MHz]Verdict DH5Ant1Hop0.998≥0.963PASS 2DH5Ant1Hop1.000≥0.884PASS Page14of40 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop Page15of40 AppendixE:Timeofoccupancy TestResult TestModeAntennaFrequency[MHz] BurstWidth [ms] TotalHops [Num] Result[s]Limit[s]Verdict DH1Ant1Hop0.3813170.121≤0.4PASS DH3Ant1Hop1.6381590.26≤0.4PASS DH5Ant1Hop2.8871110.32≤0.4PASS 2DH1Ant1Hop0.3903180.124≤0.4PASS 2DH3Ant1Hop1.6431530.251≤0.4PASS 2DH5Ant1Hop2.8911090.315≤0.4PASS Page16of40 TestGraphs DH1_Ant1_Hop DH3_Ant1_Hop Page17of40 DH5_Ant1_Hop Page18of40 2DH1_Ant1_Hop 2DH3_Ant1_Hop Page19of40 2DH5_Ant1_Hop Page20of40 Page21of40 AppendixF:Numberofhoppingchannels TestResult TestModeAntennaFrequency[MHz]Result[Num]Limit[Num]Verdict DH5Ant1Hop79≥15PASS 2DH5Ant1Hop79≥15PASS Page22of40 TestGraphs DH5_Ant1_Hop 2DH5_Ant1_Hop Page23of40 AppendixG:Bandedgemeasurements TestResult TestModeAntennaChNameFrequency[MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 Low2402-0.21-41.42≤-20.21PASS High24800.45-54.67≤-19.55PASS LowHop_2402-0.27-54.93≤-20.27PASS HighHop_24800.52-54.26≤-19.48PASS 2DH5Ant1 Low2402-0.07-41.23≤-20.07PASS High24800.63-55.55≤-19.37PASS LowHop_2402-0.99-55.11≤-20.99PASS HighHop_24800.55-54.96≤-19.45PASS Page24of40 TestGraphs DH5_Ant1_Low_2402 DH5_Ant1_High_2480 DH5_Ant1_Low_Hop_2402 Page25of40 DH5_Ant1_High_Hop_2480 2DH5_Ant1_Low_2402 Page26of40 2DH5_Ant1_High_2480 2DH5_Ant1_Low_Hop_2402 2DH5_Ant1_High_Hop_2480 Page27of40 Page28of40 AppendixH:ConductedSpuriousEmission TestResult TestModeAntennaFrequency[MHz] FreqRange [MHz] RefLevel [dBm] Result [dBm] Limit [dBm] Verdict DH5Ant1 2402 Reference-0.88-0.88---PASS 30~1000-0.88-68.86≤-20.88PASS 1000~26500-0.88-47.12≤-20.88PASS 2441 Reference0.310.31---PASS 30~10000.31-67.69≤-19.69PASS 1000~265000.31-44.64≤-19.69PASS 2480 Reference0.030.03---PASS 30~10000.03-68.59≤-19.97PASS 1000~265000.03-45.77≤-19.97PASS 2DH5Ant1 2402 Reference-4.27-4.27---PASS 30~1000-4.27-68.85≤-24.27PASS 1000~26500-4.27-47.15≤-24.27PASS 2441 Reference0.410.41---PASS 30~10000.41-68.97≤-19.59PASS 1000~265000.41-44.62≤-19.59PASS 2480 Reference-1.26-1.26---PASS 30~1000-1.26-68.26≤-21.26PASS 1000~26500-1.26-45.7≤-21.26PASS Page29of40 TestGraphs DH5_Ant1_2402_0~Reference DH5_Ant1_2402_30~1000 DH5_Ant1_2402_1000~26500 Page30of40 DH5_Ant1_2441_0~Reference DH5_Ant1_2441_30~1000 Page31of40 DH5_Ant1_2441_1000~26500 DH5_Ant1_2480_0~Reference DH5_Ant1_2480_30~1000 Page32of40 DH5_Ant1_2480_1000~26500 2DH5_Ant1_2402_0~Reference Page33of40 2DH5_Ant1_2402_30~1000 2DH5_Ant1_2402_1000~26500 2DH5_Ant1_2441_0~Reference Page34of40 2DH5_Ant1_2441_30~1000 2DH5_Ant1_2441_1000~26500 Page35of40 2DH5_Ant1_2480_0~Reference 2DH5_Ant1_2480_30~1000 2DH5_Ant1_2480_1000~26500 Page36of40 Page37of40 AppendixI:DutyCycle TestResult TestModeAntennaFrequency[MHz] ONTime [ms] Period [ms] DutyCycle [%] DutyCycle Factor[dB] DH5Ant1 24022.883.7477.011.13 24412.893.7577.071.13 24802.893.7577.071.13 2DH5Ant1 24022.893.7577.071.13 24412.893.7577.071.13 24802.903.7577.331.12 Page38of40 TestGraphs DH5_Ant1_2402 DH5_Ant1_2441 DH5_Ant1_2480 Page39of40 2DH5_Ant1_2402 2DH5_Ant1_2441 Page40of40 2DH5_Ant1_2480 ---End---

ReportNo.:18220WC30199101FCCID:2AYJ7CHE-645Page1of38 FCCTestReport Applicant:TRACOMPANYLTD. Address: Osaka-shi,Chuo-ku,Kitahama-higashi6-6, Osaka,540-0031Japan ProductName:WirelessEarphones ReportDate:Oct.18,2023 ShenzhenAnbotekComplianceLaboratoryLimited ReportNo.:18220WC30199101FCCID:2AYJ7CHE-645Page2of38 Contents 1.GeneralInformation.................................................................................................................................6 1.1.ClientInformation...........................................................................................................................6 1.2.DescriptionofDevice(EUT)..........................................................................................................6 1.3.AuxiliaryEquipmentUsedDuringTest..........................................................................................7 1.4.Operationchannellist....................................................................................................................8 1.5.DescriptionofTestModes.............................................................................................................8 1.6.MeasurementUncertainty.............................................................................................................9 1.7.TestSummary..............................................................................................................................10 1.8.DescriptionofTestFacility...........................................................................................................11 1.9.Disclaimer.....................................................................................................................................11 1.10.TestEquipmentList...................................................................................................................12 2.Antennarequirement..............................................................................................................................14 2.1.Conclusion...................................................................................................................................14 3.ConductedEmissionatACpowerline..................................................................................................15 3.1.EUTOperation.............................................................................................................................15 3.2.TestSetup....................................................................................................................................15 3.3.TestData......................................................................................................................................16 4.OccupiedBandwidth..............................................................................................................................18 4.1.EUTOperation.............................................................................................................................18 4.2.TestSetup....................................................................................................................................19 4.3.TestData......................................................................................................................................19 5.MaximumConductedOutputPower......................................................................................................20 5.1.EUTOperation.............................................................................................................................20 5.2.TestSetup....................................................................................................................................20 5.3.TestData......................................................................................................................................20 6.ChannelSeparation...............................................................................................................................21 6.1.EUTOperation.............................................................................................................................21 6.2.TestSetup....................................................................................................................................21 6.3.TestData......................................................................................................................................21 7.NumberofHoppingFrequencies...........................................................................................................22 7.1.EUTOperation.............................................................................................................................22 7.2.TestSetup....................................................................................................................................22 7.3.TestData......................................................................................................................................22 8.DwellTime..............................................................................................................................................23 8.1.EUTOperation.............................................................................................................................24 8.2.TestSetup....................................................................................................................................24 8.3.TestData......................................................................................................................................24 9.Emissionsinnon-restrictedfrequencybands.......................................................................................25 9.1.EUTOperation.............................................................................................................................26 9.2.TestSetup...........................................…

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version01 TRACOMPANYLTD. DeclarationconcerningAntennaSpecification Itisherebydeclaredthattheproduct ModelNo.:CHE-645,CHE-O-001 FCCID:2AYJ7CHE-645 fulfillstherequirementinFCCtestrelatingtotheantennatype. ThedevicespecifiedaboveconfirmstotheFCCrecommendationsfor internal antennatype(s) describedbelow: ModelNo.ofantenna:1ATN1395 Typeofantenna:FPCAntenna Gainoftheantenna:-4.32dBi Frequencyrange:2400-2500MHz Themountingoftheantennaisfixedtotheradiomoduleandnootherantennashouldbeused. Companyname:TRACOMPANYLTD. Address:Osaka-shi,Chuo-ku,Kitahama-higashi6-6,Osaka,540-0031Japan City:Osaka ZIP/Postalcode:540-0031 Country:Japan Place:Date:10/19/2023 Signature:

深圳艾创力科技有限公司 Shenzhen iTRONIC Technology CO.LTD 物料承认书 APPROVAL SHEET 品名规格/PART NAME：B105B 物料编码/PART NO：1502B105BA0000 供应商名称/MANUFACTUERE：SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 供应商地址/ADD： 广东省深圳市宝安区新安街道留仙二路 美生创 谷科技园 夏谷 504-505室 日期/DATE: 2023.07.10 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 承 认 书 SPECIFICATION FOR APPROVL 客 户： CUSTOMER： 艾创力 客 户 编 号： CUSTOMER P/N： B105B 本 厂 编 号： OUR MODEL NO： ATN1395 规 格： SPECIFICATIONS： 2.4G 蓝牙天线（R/L相同） 样 品 数： Q’TY： 1 PC S 日 期： DATE： 2023.07.10 深圳市艾特诺通讯设备有限公司 A T N 客户 CUSTOMER 结构 Structure 射频 RF 核准 Approver 结构 Structure 电子 Electronics 核准 Approver 地址：深圳市宝安区新安街道留仙二路美生创谷科技园夏谷504 -505室 Address: 504-505,XiaGu,Wonderful life creative valley,Xinan,Baoan,ShenZhen. Tel（电话）：0755-29308863 Fax（传真）：0755-29308861 Page 1 Version：A1.2 ATN-QD-PAS-0002 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 目录 Contents 封面Cover ...... 1 目录contents ...... 2 一、产品规格Product Specification ...... 3 二、匹配电路Matching circuit ...... 3 三、测试数据报告Test Data Report ...... 4 四、工程图纸Product Chart ...... 5 五、样品尺寸检测报告Size test report ...... 6 六、包装信息Packaging Information ...... 7 Page 2 Version：A1.2 ATN-QD-PAS-0002 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 一、产品规格Product Specification 2.1、Material&Mechanical Characteristics 材质Material FPC 尺寸Dimension 13.17*11.24mm 2.2、储存条件Storage conditions 储存温度Storage Temperature 22°C±5°C 相对湿度relative humidity 35-65% 二、匹配电路Matching circuit Page 3 Version：A1.2 ATN-QD-PAS-0002 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 三、测试数据报告Test Data Report 3.1 S11 Parameter 3.2 增益和效率 Gain & Efficiency 3 .3 方向图 Radiation pattern Page 4 Version：A1.2 ATN-QD-PAS-0002 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 四、工程图纸Product Drawing Page 5 Version：A1.2 ATN-QD-PAS-0002 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 五、样品尺寸检测报告 Size test report 尺寸检验报告 Dimension test report 项目project：B105B 品名 Product Name： ANT 类别category： FPC 数量Quantity：5 个 日期Date：2023.06.27 检验依据标准：Inspection basis and standard ■工程图纸Engineering drawings □标准样板Standard template□其它 Other 检验项目Inspection items 样品测验值test value 判定结果 determine 1 2 3 4 5 外观检验 Appearance inspectio 1.油污划痕、压伤 等 不良 √ √ √ √ √ OK 2、其它Other 尺寸检验 Dimensiona l inspection 1 1. 5±0.5 1.8 1.78 1.78 1.8 1.6 ok 2 11.24±0.15 11.3 11.28 11.28 11.32 11.32 ok 3 2±0.5 1.8 1.88 2.0 1.7 1.8 ok 4 Ф1.2±0.15 1.2 1.14 1.14 1.16 1.16 ok 5 Ф2.7±0.15 2.66 2.64 2.66 2.66 2.64 ok 6 8.46±0.15 8.5 8.54 8.52 8.5 8.54 ok 7 / 8 Page 6 Version：A1.2 ATN-QD-PAS-0002 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION TECHNOLOGY CO.,LTD. 六、包装信息Manner of packing 深圳市艾特诺通讯设备有限公司 SHENZHEN ATN COMMUNICATION EQUIPMENT CO.LTD 产品包装Product packaging 版本edition：：V1.0 页码Page：1/1 1.离型纸隔层摆放保护天线 B arrier paper protection products 2.密封袋封装效果 Sea ling bag packaging effect 3.纸箱封箱效果（贴出货标签和ROHS标签）Carton sealing effect Page 7 Version：A1.2 ATN-QD-PAS-0002

ProjectNo.:18220WC301991Page 1 of 2 AppendixI--TestSetupPhotograph_RF ConductedEmissionatACpowerline Emissionsinfrequencybands(below1GHz) ProjectNo.:18220WC301991Page 2 of 2 Emissionsinfrequencybands(above1GHz)