2BFWH-Z8Wireless headphone

FCCCaution: Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothefollowingtwoconditions: (1)Thisdevicemaynotcauseharmfulinterference,and(2)thisdevicemustacceptanyinterference received,includinginterferencethatmaycauseundesiredoperation. Anychangesormodificationsnotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoid theuser'sauthoritytooperatetheequipment. NOTE:ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassBdigitaldevice, pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotectionagainst harmfulinterferenceinaresidentialinstallation.Thisequipmentgenerates,usesandcanradiateradio frequencyenergyand,ifnotinstalledandusedinaccordancewiththeinstructions,maycauseharmful interferencetoradiocommunications.However,thereisnoguaranteethatinterferencewillnotoccurina particularinstallation. Ifthisequipmentdoescauseharmfulinterferencetoradioortelevisionreception, whichcanbedeterminedbyturningtheequipmentoffandon,theuserisencouragedtotrytocorrectthe interferencebyoneormoreofthefollowingmeasures: --Reorientorrelocatethereceivingantenna. --Increasetheseparationbetweentheequipmentandreceiver. --Connecttheequipmentintoanoutletonacircuitdifferent fromthattowhichthereceiverisconnected. --Consultthedealeroranexperiencedradio/TVtechnicianforhelp. ThedevicehasbeenevaluatedtomeetgeneralRFexposurerequirement.Thedevicecanbeusedin portableexposureconditionwithoutrestriction. Bluetooth headset Z8 User manual

1/1 USAMEIHUATRADINGINCLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAMEIHUATRADINGINCforServiceofProcess: CompanyName:USAMEIHUATRADINGINC FRN:0033406166 ContactName:HarleyQuinn Address:5379PineValleyCtBoulderCO 80301UnitedStates TelephoneNo:1-312-363-9424 Email:[email protected] Applicant: Companyname:ShenzhenChenchiTechnologyCo.,Ltd ProductDescription:Bluetoothheadset Granteecode:2BFWH FCCID:2BFWH-Z8 FRN:0035290782 ContactName:QiZhou Email:[email protected] Address:301-5,BuildingA,HanfuSmartCity,LonggangDistrict,Shenzhen,China [ShenzhenChenchiTechnologyCo.,Ltd]certifiesthat,asofthedateofthisfilingofthe applicationwiththeTCB,[USAMEIHUATRADINGINC]isourdesignatedUSagentforservice ofprocessfortheabovereferencedFCCID.[ShenzhenChenchiTechnologyCo.,Ltd]accepts tomaintainanagentfornolessthanoneyearafterthegranteehasterminatedallmarketing andimportationortheconclusionofanycommissionrelatedproceedinginvolvingequipment. [USAMEIHUATRADINGINC]accepts,asofthedateofthefilingoftheapplication,the obligationofthedesignatedUSagentforserviceofprocessfortheabovereferenceFCCID. TheUSAMEIHUATRADINGINCforServiceofProcessisawareofandagreestocomplywith therequirementsoutlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC 22-84,andclause§2.911. TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. ThisAgreementisvalidforpermanment. Date:25/04/2024 Applicant’sName:QiZhou Title:GeneralManager Signature US Agent’s Name: Harley Quinn Title:Manager Signature

Covered Equipment Identification Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows: We, applicant Company Name: Shenzhen Chenchi Technology Co., Ltd Address: 301-5, Building A, Hanfu Smart City, Longgang District, Shenzhen, China Phone: +86-13380322042 certify that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-04-25 Signature Date Printed Name of Signee / Title: Qi Zhou / General Manager Company: Shenzhen Chenchi Technology Co., Ltd Address: 301-5, Building A, Hanfu Smart City, Longgang District, Shenzhen, China Phone: +86-13380322042 Fax: N/A Email: [email protected]

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BFWH-Z8 Z8, Z9, Z10, Z11, Z12, Z13, Z14, Z15, Z16, Z17, Z18, Z19, Z20, Z21, Z22, Z23, Z24, Z25, Z26, Z27, Z28, Z29, Z30 We, applicant Company Name: Shenzhen Chenchi Technology Co., Ltd Address: 301-5, Building A, Hanfu Smart City, Longgang District, Shenzhen, China Phone: +86-13380322042 certify that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-04-25 Signature Date Printed Name of Signee / Title: Qi Zhou / General Manager Company: Shenzhen Chenchi Technology Co., Ltd Address: 301-5, Building A, Hanfu Smart City, Longgang District, Shenzhen, China Phone: +86-13380322042 Fax: N/A Email: [email protected]

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BFWH-Z8 Z8, Z9, Z10, Z11, Z12, Z13, Z14, Z15, Z16, Z17, Z18, Z19, Z20, Z21, Z22, Z23, Z24, Z25, Z26, Z27, Z28, Z29, Z30 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Parts Lists • the Tune Up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2024-04-25 Signature Date Printed Name of Signee / Title: Qi Zhou / General Manager Company: Shenzhen Chenchi Technology Co., Ltd Address: 301-5, Building A, Hanfu Smart City, Longgang District, Shenzhen, China Phone: +86-13380322042 Fax: N/A Email: [email protected]

Shenzhen Chenchi Technology Co., Ltd 301-5, Building A, Hanfu Smart City, Longgang District, Shenzhen, China Date: April 25, 2024 FCC ID: 2BFWH-Z8 Model Number: Z8, Z9, Z10, Z11, Z12, Z13, Z14, Z15, Z16, Z17, Z18, Z19, Z20, Z21, Z22, Z23, Z24, Z25, Z26, Z27, Z28, Z29, Z30 To: Federal Communication Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21048 To Whom It May Concern, We, Shenzhen Chenchi Technology Co., Ltd hereby declare that our product (Bluetooth headset) Model Number: Z8, Z9, Z10, Z11, Z12, Z13, Z14, Z15, Z16, Z17, Z18, Z19, Z20, Z21, Z22, Z23, Z24, Z25, Z26, Z27, Z28, Z29, Z30 board, Schematic, Hardware version, Software version, structure and internal photos are same, named and appearance differently due to marketing purposes. Should you have any questions or comments regarding this matter, please have my best attention. Sincerely, (Signed) Name / Title: Qi Zhou/ General Manager Company: Shenzhen Chenchi Technology Co., Ltd Address: 301-5, Building A, Hanfu Smart City, Longgang District, Shenzhen, China Phone: +86-13380322042 Fax Number: N/A E-Mail: [email protected]

FCCID：2BFWH-Z8 FCCID：2BFWH-Z8 FCCID：2BFWH-Z8 FCCID：2BFWH-Z8

FCCID:2BFWH-Z8 Label Size:10mm*5mm FCCID:2BFWH-Z8 LabelLocation

FCCID：2BFWH-Z8 FCCID：2BFWH-Z8 ANT FCCID：2BFWH-Z8 FCCID：2BFWH-Z8

RFExposureevaluation FCCID2BFWH-Z8 ProductNameBluetoothheadset Model/TypereferenceZ8 ExposurecategoryGeneralpopulation/uncontrolledenvironment EUTTypeProductionUnit DeviceTypePortableDevice 1.Reference ANSIC95.1–1999:IEEEStandardforSafetyLevelswithRespecttoHumanExposureto RadioFrequencyElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortable DevicesRFExposureProceduresandEquipmentAuthorizationPolicies. FCCCFR47part11.1310:Radiofrequencyradiationexposurelimits. FCCCFR47part22.1093:Radiofrequencyradiationexposureevaluation:portabledevices 2.Requirement AccordingtoKDB447498D01GeneralRFExposureGuidancev06Section4.3.1Standalone SARtestexclusionconsiderations:“UnlessspecificallyrequiredbythepublishedRFexposure KDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluationforgeneral populationexposureconditions,bymeasurementornumericalsimulation,isnotrequired whenthecorrespondingSARTestExclusionThresholdcondition,listedbelow,issatisfied. Thesetestexclusionconditionsarebasedonsource-basedtime-averagedmaximum conductedoutputpoweroftheRFchannelrequiringevaluation,adjustedfortune-uptolerance, andtheminimumtestseparationdistancerequiredfortheexposureconditions.22The minimumtestseparationdistanceisdeterminedbythesmallestdistancefromtheantenna andradiatingstructuresoroutersurfaceofthedevice,accordingtothehostformfactor, exposureconditionsandplatformrequirements,toanypartofthebodyorextremityofauser orbystander(see5)ofsection4.1).ToqualifyforSARtestexclusion,thetestseparation distancesappliedmustbefullyexplainedandjustifiedbytheoperatingconfigurationsand exposureconditionsofthetransmitterandapplicablehostplatformrequirements,typicallyin theSARmeasurementorSARanalysisreport,accordingtotherequiredpublishedRF exposureKDBprocedures.WhennootherRFexposuretestingorreportingisrequired,a statementofjustificationandcompliancemustbeincludedintheequipmentapproval,inlieuof theSARreport,toqualifyfortheSARtestexclusion.Whenrequired,thedevicespecific conditionsdescribedintheotherpublishedRFexposureKDBproceduresmustbesatisfied beforeapplyingtheseSARtestexclusionprovisions;forexample,handheldPTTtwo-way radios,handsets,laptops&tabletsetc.23” [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where: •f(GHz)istheRFchanneltransmitfrequencyinGHz •PoweranddistanceareroundedtothenearestmWandmmbeforecalculation •Theresultisroundedtoonedecimalplaceforcomparison •3.0and7.5arereferredtoasthenumericthresholdsinthestep2below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50 mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto5)insection4.1isappliedto determineSARtestexclusion. Whenoneofthefollowingtestexclusionconditionsissatisfiedforallcombinationsof simultaneoustransmissionconfigurations,furtherequipmentapprovalisnotrequiredto incorporatetransmittermodulesinhostdevicesthatoperateinthemixedmobileandportable hostplatformexposureconditions.Thegranteeisresponsiblefordocumentingthisaccording toClassIpermissivechangerequirements.AntennasthatqualifyforstandaloneSARtest exclusionmustapplytheestimatedstandaloneSARtodeterminesimultaneoustransmission testexclusion. a)The[∑of(thehighestmeasuredorestimatedSARforeachstandaloneantenna configuration,adjustedformaximumtune-uptolerance)/1.6W/kg]+[∑ofMPEratios]is≤ 1.0. b)TheSARtopeaklocationseparationratiosofallsimultaneouslytransmittingantennapairs operatinginportabledeviceexposureconditionsareall≤0.04,andthe[∑ofMPEratios]is ≤1.0. 3.MaximumPeakOutputPower Left ModulationPacketTypeChannel PeakOutputPower (dBm) PeakOutputPower (mW) GFSKDH5 0 3.4392.208 39 2.1011.622 78 2.5591.803 π/4DQPSK2-DH5 0 3.2772.127 39 2.6621.846 783.1412.061 8DPSK3-DH5 0 3.4152.196 39 2.8641.934 78 2.8401.923 Right ModulationPacketTypeChannel PeakOutputPower (dBm) PeakOutputPower (mW) GFSKDH5 0 3.5322.255 39 2.0911.618 78 2.5741.809 π/4DQPSK2-DH5 0 3.3732.174 39 2.7611.888 783.2772.127 8DPSK3-DH5 0 2.8061.908 39 2.9541.974 78 3.4332.204 4.ManufacturingTolerance Left BR/EDR DH5 ChannelChannel0Channel39Channel78 Target(dBm)4.02.03.0 Tolerance±(dB)1.01.01.0 2DH5 ChannelChannel0Channel39Channel78 Target(dBm)4.03.04.0 Tolerance±(dB)1.01.01.0 3DH5 ChannelChannel0Channel39Channel78 Target(dBm)3.03.04.0 Tolerance±(dB)1.01.01.0 Right BR/EDR DH5 ChannelChannel0Channel39Channel78 Target(dBm)4.02.03.0 Tolerance±(dB)1.01.01.0 2DH5 ChannelChannel0Channel39Channel78 Target(dBm)4.03.04.0 Tolerance±(dB)1.01.01.0 3DH5 ChannelChannel0Channel39Channel78 Target(dBm)3.03.04.0 Tolerance±(dB)1.01.01.0 5.EvaluationResult Band/Modef(GHz) Antenna Distance (mm) RFoutputpower SARTest Exclusion Threshold SARTest Exclusion dBmmW BR/EDR2.480553.160.9960<3.0Yes Remark: 1.Outputpowerincludingtuneuptolerance; 2.Whentheminimumtestseparationdistanceis<5mm,adistanceof5mmaccordingtof)in section4.1isappliedtodetermineSARtestexclusion. 5.Conclusion ThemeasurementresultscomplywiththeFCCLimitper47CFR2.1093fortheuncontrolled RFExposureandSARExclusionThresholdperKDB447498v06. ------Endofthereport------

深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 1 OF 8 YF 3216 H4 R 2G4502 1 2 3 4 5 3.2 x 1.6 x 1.2 (mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification 1. Product Number 1 2 3 4 5 412, Building 7, Phase II, Nanshan Yungu Entrepreneurship Park, No. 2 Pingshan 1st Road, Pingshan Community, Taoyuan Street, Nanshan District, Shenzhen, China SHEN ZHEN YINGFENG ANTENNA TECHNOLOGY CO.,LTD 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 2 OF 8 2. Features *Stable and reliable in performances *Low temperature coefficient of frequency *Low profile, compact size *RoHS compliance *SMT processes compatible 3. Applications *Bluetooth earphone systems *Hand-held devices when WiFi /Bluetooth functions are needed, e.g., Smart phone. *IEEE802.11 b/g/n *ZigBee *Wireless PCMCIA cards or USB dongle 4. Description Ying feng chip antenna series are specially designed for WiFi/Bluetooth applications. Based on yingfeng proprietary design and processes, this chip antenna has excellent stability and sensitivity to consistently provide high signal reception efficiency. 5. Electrical Specifications (40 x 40 mm 2 ground plane) 5-1. Electrical Table Characteristics Specifications Unit Outline Dimensions 3.2x1.6x1.2 mm Working Frequency 2400~2500 MHz VSWR 2 Max. Impedance 50  Polarization Linear Polarization Gain Peak 2 (typical) dBi Efficiency 75 (typical) % 5-2. Return Loss & VSWR Return Loss (S11) Smith Chart(S11) 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 3 OF 8 6 Outline Dimensions of Antenna & Evaluation Board (unit: mm) 6-1. Antenna Dimensions Configuration and Dimensions: 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 4 OF 8 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 5 OF 8 7.Radiation Pattern (40x 40 mm 2 ground plane) 7-1. 3D Gain Pattern @ 2450 MHz Z X Y Y X Z 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 6 OF 8 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 7 OF 8 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : harry Designed by : andy Checked by : andy Approved by：oliver TITLE：3.2x1.6 x 1.2mm) WiFi/Bluetooth Ceramic Chip Antenna (YF300C) Engineering Specification DOCUMENT YF3216H4R2G4502 REV. NO. C PAGE 8 OF 8

ReportNo.:CISRR24040804401 AppendixA ReportNo.:CISRR24040804401 FCCID:2BFWH-Z8 ProductName:Bluetoothheadset ModelNo.:Z8 TestEngineer:LucasHuang Supervisedby:RoryHuang ReportNo.:CISRR24040804401 ConductedPeakOutputPower TestResult Left ModulationPacketTypeChannel PeakOutput Power (dBm) PeakOutput Power (mW) Limit (dBm) Result GFSKDH5 03.4392.208 30 PASS 392.1011.622PASS 782.5591.803PASS π/4DQPSK2-DH5 03.2772.127 20.97 PASS 392.6621.846PASS 783.1412.061PASS 8DPSK3-DH5 03.4152.196PASS 392.8641.934PASS 782.8401.923PASS Right ModulationPacketTypeChannel PeakOutput Power (dBm) PeakOutput Power (mW) Limit (dBm) Result GFSKDH5 03.5322.255 30 PASS 392.0911.618PASS 782.5741.809PASS π/4DQPSK2-DH5 03.3732.174 20.97 PASS 392.7611.888PASS 783.2772.127PASS 8DPSK3-DH5 02.8061.908PASS 392.9541.974PASS 783.4332.204PASS ReportNo.:CISRR24040804401 99%Bandwidth TestResult Left ModulationChannel99%BW(MHz) GFSK 00.86840 390.89020 780.87080 π/4DQPSK 01.2010 391.1930 781.1940 8DPSK 01.2140 391.2090 781.2060 TestGraphs GFSK_DH5_Channel0π/4DQPSK_2-DH5_Channel0 GFSK_DH5_Channel39π/4DQPSK_2-DH5_Channel39 ReportNo.:CISRR24040804401 GFSK_DH5_Channel78π/4DQPSK_2-DH5_Channel78 8DPSK_3-DH5_Channel08DPSK_3-DH5_Channel39 8DPSK_3-DH5_Channel78 ReportNo.:CISRR24040804401 Right TestResult ModulationChannel99%BW(MHz) GFSK 00.86560 390.88080 780.87100 π/4DQPSK 01.2060 391.1930 781.1890 8DPSK 01.2120 391.2040 781.2050 TestGraphs GFSK_DH5_Channel0π/4DQPSK_2-DH5_Channel0 GFSK_DH5_Channel39π/4DQPSK_2-DH5_Channel39 ReportNo.:CISRR24040804401 GFSK_DH5_Channel78π/4DQPSK_2-DH5_Channel78 8DPSK_3-DH5_Channel08DPSK_3-DH5_Channel39 8DPSK_3-DH5_Channel78 ReportNo.:CISRR24040804401 20dBBandwidth TestResult Left ModulationChannelCenterFrequency(MHz)20dBBandwidth(MHz) GFSK 02402MHz0.9400 392441MHz0.9700 782480MHz1.000 π/4DQPSK 02402MHz1.300 392441MHz1.310 782480MHz1.310 8DPSK 02402MHz1.290 392441MHz1.280 782480MHz1.290 TestGraphs GFSK_DH5_Channel0GFSK_DH5_Channel39 GFSK_DH5_Channel78π/4DQPSK_2-DH5_Channel0 ReportNo.:CISRR24040804401 π/4DQPSK_2-DH5_Channel39π/4DQPSK_2-DH5_Channel78 8DPSK_3-DH5_Channel08DPSK_3-DH5_Channel39 8DPSK_3-DH5_Channel78 ReportNo.:CISRR24040804401 Right TestResult ModulationChannelCenterFrequency(MHz)20dBBandwidth(MHz) GFSK 02402MHz0.9400 392441MHz0.9900 782480MHz0.9500 π/4DQPSK 02402MHz1.310 392441MHz1.310 782480MHz1.300 8DPSK 02402MHz1.280 392441MHz1.290 782480MHz1.300 TestGraphs GFSK_DH5_Channel0GFSK_DH5_Channel39 GFSK_DH5_Channel78π/4DQPSK_2-DH5_Channel0 ReportNo.:CISRR24040804401 π/4DQPSK_2-DH5_Channel39π/4DQPSK_2-DH5_Channel78 8DPSK_3-DH5_Channel08DPSK_3-DH5_Channel39 8DPSK_3-DH5_Channel78 ReportNo.:CISRR24040804401 CarrierFrequenciesSeparation TestResult Left ModulationPacket LeftCenter frequency (MHz) RightCenter frequency (MHz) Hopping Frequency Separation (MHz) Limit(MHz)Result GFSKDH52440.04512440.99990.95490.627PASS π/4DQPSK2-DH52440.01292441.19411.18110.867PASS 8DPSK3-DH52439.98482441.03291.04820.86PASS TestGraphs GFSKπ/4DQPSK 8DPSK ReportNo.:CISRR24040804401 Right TestResult ModulationPacket LeftCenter frequency (MHz) RightCenter frequency (MHz) Hopping Frequency Separation (MHz) Limit(MHz)Result GFSKDH52439.86632440.85260.98640.627PASS π/4DQPSK2-DH52440.05382440.99940.94560.873PASS 8DPSK3-DH52439.88192440.90161.01970.853PASS TestGraphs GFSKπ/4DQPSK 8DPSK ReportNo.:CISRR24040804401 ConductedOutOfBandEmission TestResult Left Non-Hopping ModulationPacketChannel OOB Emission Frequency (MHz) OOB Emission Level (dBm) Limit (dBm) OverLimit (dB) Result GFSKDH5 0 2400.00-48.197-17.32-30.877PASS 7205.96-36.962-17.32-19.642PASS 399763.72-40.117-18.13-21.987PASS 78 2483.50-51.854-17.62-34.234PASS 9920.20-40.187-17.62-22.567PASS π/4DQPSK2-DH5 0 2400.00-49.074-17.64-31.434PASS 9608.08-39.906-17.64-22.266PASS 399763.72-39.902-18.38-21.522PASS 78 2483.50-52.694-17.77-34.924PASS 9920.20-40.552-17.77-22.782PASS 8DPSK3-DH5 0 2400.00-48.697-17.49-31.207PASS 9608.08-39.518-17.49-22.028PASS 399763.72-39.616-18.28-21.336PASS 78 2483.50-52.064-17.77-34.294PASS 9920.20-40.401-17.77-22.631PASS Hopping ModulationPacketChannel OOB Emission Frequency (MHz) OOB Emission Level (dBm) Limit (dBm) OverLimit (dB) Result GFSKDH5 Hopping 2398.22-49.761-17.33-32.431PASS 2400.00-52.413-17.33-35.083PASS 2483.50-52.831-17.85-34.981PASS 2398.47-49.787-17.3-32.487PASS 2400.00-52.357-17.3-35.057PASS 2483.50-50.673-17.63-33.043PASS π/4DQPSK2-DH5 2396.82-49.445-17.35-32.095PASS 2400.00-49.807-17.35-32.457PASS 2483.50-51.034-18.26-32.774PASS 2396.64-50.605-18.3-32.305PASS 2400.00-52.601-18.3-34.301PASS 2483.50-50.505-18.27-32.235PASS 8DPSK3-DH5 2395.41-50.785-17.75-33.035PASS 2400.00-52.854-17.75-35.104PASS 2483.50-52.400-20.21-32.190PASS 2398.99-50.255-17.36-32.895PASS 2400.00-51.508-17.36-34.148PASS 2483.50-52.836-20.94-31.896PASS TestGraphs ReportNo.:CISRR24040804401 OutOfBandEmission GFSK_DH5_Channel0 OutOfBandEmission π/4DQPSK_2-DH5_Channel0 SpuriousEmission GFSK_DH5_Channel0 SpuriousEmission π/4DQPSK_2-DH5_Channel0 OutOfBandEmissionOutOfBandEmission ReportNo.:CISRR24040804401 GFSK_DH5_Channel39π/4DQPSK_2-DH5_Channel39 SpuriousEmissions GFSK_DH5_Channel39 SpuriousEmissions π/4DQPSK_2-DH5_Channel39 OutOfBandEmission GFSK_DH5_Channel78 OutOfBandEmission π/4DQPSK_2-DH5_Channel78 ReportNo.:CISRR24040804401 SpuriousEmission GFSK_DH5_Channel78 SpuriousEmission π/4DQPSK_2-DH5_Channel78 OutOfBandEmission 8DPSK_3-DH5_Channel0 SpuriousEmission 8DPSK_3-DH5_Channel0 OutOfBandEmission 8DPSK_3-DH5_Channel39 SpuriousEmissions 8DPSK_3-DH5_Channel39 ReportNo.:CISRR24040804401 OutOfBandEmission 8DPSK_3-DH5_Channel78 SpuriousEmission 8DPSK_3-DH5_Channel78 OutOfBandEmission(Left) GFSK_DH5_ChannelHopping OutOfBandEmission(Left) π/4DQPSK_2-DH5_ChannelHopping ReportNo.:CISRR24040804401 OutOfBandEmission(Right) GFSK_DH5_ChannelHopping OutOfBandEmission(Right) π/4DQPSK_2-DH5_ChannelHopping OutOfBandEmission(Left) GFSK_DH5_ChannelHopping OutOfBandEmission(Left) π/4DQPSK_2-DH5_ChannelHopping OutOfBandEmission(Right)OutOfBandEmission(Right) ReportNo.:CISRR24040804401 GFSK_DH…

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ReportNo.:CISRR24040804401 Page:1of43 TESTREPORT ReportNo.:CISRR24040804401 ProjectNo.CISR240408044 FCCID2BFWH-Z8 Applicant:ShenzhenChenchiTechnologyCo.,Ltd Address:301-5,BuildingA,HanfuSmartCity,LonggangDistrict,Shenzhen,China ManufacturerShenzhenChenchiTechnologyCo.,Ltd Address301-5,BuildingA,HanfuSmartCity,LonggangDistrict,Shenzhen,China ProductName:Bluetoothheadset TradeMark:-- Model/Typereference:Z8 ListedModel(s):Z9,Z10,Z11,Z12,Z13,Z14,Z15,Z16,Z17,Z18,Z19,Z20,Z21,Z22,Z23, Z24,Z25,Z26,Z27,Z28,Z29,Z30 Standard:Part15SubpartCSection15.247 Testdate:April08,2023~April16,2024 IssuedateApril16,2024 Testresult:Complied Preparedby:RoryHuangApprovedby:GenryLong Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. ReportNo.:CISRR24040804401 Page:2of43 Contents 1.REPORTVERSION.........................................................................................................................................3 2.SUMMARYOFTESTRESULT.......................................................................................................................4 3.SUMMARY.....................................................................................................................................................5 3.1.ProductDescription....................................................................................................................................5 3.2.RadioSpecificationDescription................................................................................................................5 3.3.ModificationofEUT.....................................................................................................................................6 3.4.TestingSite...................................................................................................................................................6 3.5.FieldStrengthCalculation..........................................................................................................................6 3.6.DISTURBANCECalculation........................................................................................................................6 4.TESTCONFIGURATION.............................................................................................................................7 4.1.Testfrequencylist.......................................................................................................................................7 4.2.Testmode.....................................................................................................................................................7 4.3.Supportunitusedintestconfigurationandsystem...............................................................................7 4.4.Testsampleinformation.............................................................................................................................7 4.5.Testingenvironmentalcondition...............................................................................................................8 4.6.Statementofthemeasurementuncertainty.............................................................................................8 4.7.EquipmentUsedduringtheTest...............................................................................................................9 5.TESTCONDITIONSANDRESULTS.....................................................................................................10 5.1.AntennaRequirement...............................................................................................................................10 5.2.ACConductedEmission...........................................................................................................................11 5.3.PeakOutputPower....................................................................................................................................14 5.4.20dBBandwidth........................................................................................................................................15 5.5.99%OccupiedBandwidth.........................................................................................................................16 5.6.CarrierFrequenciesSeparation...............................................................................................................17 5.7.HoppingChannelNumber........................................................................................................................18 5.8.DwellTime..................................................................................................................................................19 5.9.DutyCycleCorrectionFactor(DCCF).....................................................................................................20 5.10.PseudorandomFrequencyHoppingSequence...................................................................................21 5.11.ConductedBandedgeandSpuriousEmission...................................................................................22 5.12.RadiatedBandedgeEmission...............................................................................................................23 5.13.RadiatedSpuriousEmission..................................................................................................................25 6.TESTSETUPPHOTOS............................................................................................................................33 7.EXTERNALANDINTERNALPHOTOS.................................................................................................36 7.1Externalphotos............................................................................................................................................36 7.2Internalphotos.........................................................................................................…

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FCCID：2BFWH-Z8 RadiatedEmission Below1GHz: Above1GHz: FCCID：2BFWH-Z8 ACConductedEmission