2BCM7-X58Wireless Headset

ShenzhenChaoyinElectronicsCo.,Ltd 6/5/2024 NemkoNorthAmerica,Inc. 303RiverRoad Ottawa,Ontario,Can K1V1H2 AUTHORITYTOACTASAGENT-FCC Onourbehalf,IappointShenzhenChaoyinElectronicsCo.,Ltd,toactasouragentinthe preparationofthisapplicationforequipmentcertification.Icertifythatsubmitteddocumentsproperly describethedeviceorsystemforwhichequipmentcertificationissought.Ialsocertifythateachunit manufactured,importedormarketed,asdefinedinFCCregulationswillhaveaffixedtoitalabel identicaltothatsubmittedforapprovalwiththisapplication. Insigningthisletter,Applicantcertifiesthatneithertheapplicantnoranypartytotheapplicationis notsubjecttoadenialofFederalbenefits,thatincludeFCCbenefits,pursuanttoSection5301ofthe Anti-DrugAbuseActof1988,21U.S.C.§862becauseofaconvictionforpossessionordistribution ofacontrolledsubstance.See47CFR1.2002(b)forthedefinitionofa"party"forthesepurposes. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonourbehalf,I acknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsforcertification,as specifiedbyNemkoNorthAmericaInc.,stillresidesstillresideswithus. Sincerely, Printedname:AMYMa

ShenzhenChaoyinElectronicsCo.,Ltd. June17,2024 NemkoNorthAmerica,Inc. 303RiverRoad Ottawa,Ontario,Canada K1V1H2 REQUESTFORCONFIDENTIALITY-FCC FCCID:2BCM7-X58 PursuanttoSections0.457(d)and0.459oftheCommission’sRulesandFCCGuidancedocument 726920,weherebyrequestpermanentconfidentialtreatmentofexhibitsidentifiedassuchinthe tablebelowandrequesttheyarepermanentlywithheldfrompublicreviewbasedonthedocuments containingtradesecretsandproprietaryinformationnotcustomarilyreleasedtothepublic.The publicdisclosureofthisinformationmightbeharmfultotheapplicantandprovideunjustifiedbenefits toitscompetitors. ExhibitTypeofConfidentialityRequested BlockDiagrams☒Permanent☐ShortTerm ExternalPhotos------------------☐ShortTerm InternalPhotos ☐Permanent* ☐ShortTerm OperationDescription☒Permanent☐ShortTerm PartsList&Placement/BOM ☐ Permanent ☐ShortTerm Tune-UpProcedure ☐Permanent ☐ShortTerm SchematicDiagrams☒Permanent☐ShortTerm TestSetupPhotos------------------☐ShortTerm User’sManual ☐Permanent* ☐ShortTerm Theasteriskeditems(*)requirefurtherinformationtobeprovidedinthisjustificationletterbeforepermanentconfidentiality willbeextendedtotheseexhibits.PleaserefertoFCCKDB726920D01foundat: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731andreviewsectionII,3)regarding specificinformationthatmustaccompanytheserequests. Note:anydocumentsheldundertheShort-Termconfidentialitywillautomaticallybecomepublic aftertherequestedtimeifanappropriateextensionrequesthasnotbeenreceived.Anyexhibits (i.e.,schematicdiagrams)thatmayhavealreadybeenrequestedtohave“Permanent” confidentialityasshownaboveneednotberepeatedunderShort-Termconfidentialityrequest. Sincerely, Signed: Printedname:AMYMa Title:Manager CompanyName:ShenzhenChaoyinElectronicsCo.,Ltd.

ShenzhenChaoyinElectronicsCo.,Ltd Thedifferencebetweentheleftheadsetandtherightheadset Productdescription:WirelessHeadset Modelname:X58, TWS,X1,X2,X3,X4,X5,X6,X7,X8,X9,X10,X11,X12,X13,X14,X15,X16,X17, X18,X19,X20,X21,X22,X23,X24,X25,X26,X27,X28,X29,X30,X31,X32,X33, X34,X35,X36,X37,X38,X39,X50,X51,X52,X53,X54,X55,X56,X57,X59,X60, X61,X62,X63,X64,X65,X66,X67,X68,X69,X70,X71,X72,X73,X74,X75,X76, X77,X78,X79,X80,X81,X82,X83,X84,X85,X86,X87,X88,X89,X90,X91,X92, X93,X94,X95,X96,X97,X98,X99,DX-25,DX-26,DX-21,DX-22,DX-27,DX-23 FCCID:2BCM7-X58 ThecircuitprincipleoftheleftandrightearphonesisthesameasthatoftheRFchip, onlythePCBwiringandlayoutaredifferent Client’ssignature: Client’sname/title:AMYMa/Manager Contactinformation/address:515,5thFloor,Building405,SandaIndustrialZone, ZhenxingRoad,LicunCommunity,HuaqiangbeiStreet,FutianDistrict,Shenzhen

FamilyCertificationAttestationLetter 6/7/2024 NemkoCanadaInc 303RiverRoad Ottawa K1V1H2 Canada CompanyName:ShenzhenChaoyinElectronicsCo.,Ltd FCCID:2BCM7-X58 Models:X58, TWS,X1,X2,X3,X4,X5,X6,X7,X8,X9,X10,X11,X12,X13,X14,X15,X16,X17,X18, X19,X20,X21,X22,X23,X24,X25,X26,X27,X28,X29,X30,X31,X32,X33,X34,X35, X36,X37,X38,X39,X50,X51,X52,X53,X54,X55,X56,X57,X59,X60,X61,X62,X63, X64,X65,X66,X67,X68,X69,X70,X71,X72,X73,X74,X75,X76,X77,X78,X79,X80, X81,X82,X83,X84,X85,X86,X87,X88,X89,X90,X91,X92,X93,X94,X95,X96,X97, X98,X99,DX-25,DX-26,DX-21,DX-22,DX-27,DX-23 WeherebyrequestFamilyCertificationfortheabovementionedModelsbasedonthembeing electricallyidentical. X58istestedmodel,othermodelsarederivativemodels.Themodelisexactlythesamein circuit,PCBlayout,RFChip,appearance.SothetestdataofX58canrepresentthe remainingmodels Signed: Printedname:AMYMa Title:Manager Date:6/7/2024

FCCID:2BCM7-X58 EUTPHOTOS(ExternalPhotos) Leftearphone FCCID:2BCM7-X58 FCCID:2BCM7-X58 FCCID:2BCM7-X58 Rightearphone FCCID:2BCM7-X58 FCCID:2BCM7-X58 FCCID:2BCM7-X58 ※※※※※ENDOFREPORT※※※※※

Size:3mmX10mm FCCID:2BCM7-X58

FCCID:2BCM7-X58 EUTPHOTOS(InternalPhotos) Note:TheRFchipoftheleftandrightearphonesisthesame,onlythereisadifferenceinthecircuitlayout Leftearphone FCCID:2BCM7-X58 ANT FCCID:2BCM7-X58 Rightearphone FCCID:2BCM7-X58 FCCID:2BCM7-X58 FCCID:2BCM7-X58 ANT FCCID:2BCM7-X58 ※※※※※ENDOFREPORT※※※※※

FCCID:2BCM7-X58 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093，Unless specificallyrequiredbythepublishedRFexposureKDBprocedures,standalone1-gheador bodyand10-gextremitySARevaluationforgeneralpopulationexposureconditions,by measurementornumericalsimulation,isnotrequiredwhenthecorrespondingSARTest ExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtest exclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f (GHz) ]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Here, ForBluetooth Mode Max Power (dBm) Tune-up power (dBm) Max Power (mW) Frequency(MHz) Min. Distance (mm) Calc. thresholds limit BR/EDR -3.03-3±1 0.63248050.19843.0 SoaSARtestisnotrequired

2.4GHz1608ChipAntenna:RANT1608F245C04 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT1608F245C04 (A)(B)(C)(D)(E)(F) ElectricalSpecification DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 1.6x0.8mm( ± 0.1mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=04 WorkingFrequencyRange2400~2500MHz Bandwidth120MHz(Min.) PeakGain2.7dBi(Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature( °C )-40~85 °C ResistancetoSolderingHeats 10sec.(@280 °C ) TerminationNi/Au(Leadless) Dimension(mm) L 1.60±0.10 W 0.80 ± 0.10 T 0.80 ± 0.10 Add:Room 707, Building F, Tongan Zhichuangyuan, xixiang street, Baoan District, Shenzhen. 2.4GHz1608ChipAntenna:RANT1608F245C04 _ 1 EvaluationBoardReference PCBDimensionAntennaLayoutReference Unit:mm ElectricalCharacteristics ReturnLoss&Radiation ELECTRICALCHARACTERISTICSS11 Radiation ElectricalCharacteristics Freque ncy EfficPercenGain 2400-1.6472.27%2.38 2450-1.3375.34%2.7 2500-1.5972.98%2.59 Add:Room 707, Building F, Tongan Zhichuangyuan, xixiang street, Baoan District, Shenzhen. 2.4GHz1608ChipAntenna:RANT1608F245C04 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 16087”4K/Reel 4.0±0.5 4.0±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType1608 1.90±0.203.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 Add:Room 707, Building F, Tongan Zhichuangyuan, xixiang street, Baoan District, Shenzhen. 2.4GHz1608ChipAntenna:RANT1608F245C04 _ ReliabilityTable TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 Add:Room 707, Building F, Tongan Zhichuangyuan, xixiang street, Baoan District, Shenzhen. 2.4GHz 1 6 0 8 Chip Antenna: RANT1608F245C04 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 12019/03/01NewDatasheet 22020/02/22Add2Dradiationcharacteristic Add:Room 707, Building F, Tongan Zhichuangyuan, xixiang street, Baoan District, Shenzhen.

Project No.: ZHT-240521010E Page 1 of 96 FCC TEST REPORT FCC ID:2BCM7-X58 Report Number. .............................. : ZHT-240521010E Date of Test ...................................... .: May 21, 2024 to May 30, 2024 Date of issue ..................................... : May 30, 2024 Test Result ...................................... : PASS Testing Laboratory. ........................ : Guangdong Zhonghan Testing Technology Co., Ltd. Address ........................................... : Room 104, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Applicant's name ......................... : Shenzhen Chaoyin Electronics Co.,Ltd Address ........................................... : 515, 5th Floor, Building 405, Sanda Industrial Zone, Zhenxing Road,Licun Community, Huaqiangbei Street, Futian District, Shenzhen Manufacturer's name ................... : Shenzhen Chaoyin Electronics Co.,Ltd Address ........................................... : 515, 5th Floor, Building 405, Sanda Industrial Zone, Zhenxing Road,Licun Community, Huaqiangbei Street, Futian District, Shenzhen Test specification: Standard ........................................... : FCC CFR Title 47 Part 15 Subpart C Section 15.247 Test procedure.................................. : KDB558074 D01 15.247 Meas Guidance v05r02 ANSI C63.10:2013 Non-standard test method .............. : N/A This device described above has been tested by ZHT, and 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 ZHT, this document may be altered or revised by ZHT, personal only, and shall be noted in the revision of the document. Product name ................................. : Wireless Headset Trademark ....................................... : / Model/Type reference ....................... : X58, TWS, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15, X16, X17, X18, X19, X20, X21, X22, X23, X24, X25, X26, X27, X28, X29, X30, X31, X32, X33, X34, X35, X36, X37, X38, X39, X50, X51, X52, X53, X54, X55, X56, X57, X59, X60, X61, X62, X63, X64, X65, X66, X67, X68, X69, X70, X71, X72, X73, X74, X75, X76, X77, X78, X79, X80, X81, X82, X83, X84, X85, X86, X87, X88, X89, X90, X91, X92, X93, X94, X95, X96, X97, X98, X99, DX-25, DX-26, DX-21, DX-22, DX-27, DX-23 Model Difference..............................: X58 is tested model, other models are derivative models .The model is exactly the same in circuit, PCB layout, RF Chip, appearance. So the test data of X58 can represent the remaining models Ratings .............................................. : Input: 5 V0.2 A Project No.: ZHT-240521010E Page 2 of 96 Testing procedure and testing location: Testing Laboratory ..................................... : Guangdong Zhonghan Testing Technology Co., Ltd. Address ...................................................... : Room 104, Building 1, Yibaolai Industrial Park, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Kevin Yang Tested by (name + signature) .................... : Baret Wu Reviewer (name + signature) ..................... : Levi Lee Approved (name + signature) .................... : Project No.: ZHT-240521010E Page 3 of 96 Table of Contents Page 2.1 TEST FACILITY ............................................................................................................................... 7 2.2 MEASUREMENT UNCERTAINTY .................................................................................................. 7 3. GENERAL INFORMATION ............................................................................................................... 8 3.1 GENERAL DESCRIPTION OF EUT ................................................................................................ 8 3.3 Support Equipment ........................................................................................................................ 10 3.4 Test Mode ...................................................................................................................................... 10 3.5 EQUIPMENTS LIST FOR ALL TEST ITEMS ................................................................................ 11 4. EMC EMISSION TEST .................................................................................................................... 13 4.1 Conducted emissions .................................................................................................................... 13 4.1.1 POWER LINE CONDUCTED EMISSION Limits ........................................................................ 13 4.1.2 TEST PROCEDURE ................................................................................................................... 13 4.1.3 DEVIATION FROM TEST STANDARD ...................................................................................... 13 4.1.4 TEST SETUP .............................................................................................................................. 14 4.1.5 EUT OPERATING CONDITIONS ............................................................................................... 14 4.1.6 TEST RESULTS ......................................................................................................................... 14 4.2 Radiated emissions........................................................................................................................ 15 4.2.1 Radiated Emission Limits ........................................................................................................... 15 4.2.2 TEST PROCEDURE ................................................................................................................... 15 4.2.3 DEVIATION FROM TEST STANDARD ..............................…

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FCCID:2BCM7-X58 EUTTESTPHOTOS Thetestwasfortheleftearphone