2BHJ5-HF001BLUETOOTH EARPHONE

Shenzhen Wushuang Electronic Technology Co., Ltd. Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: 07-13-2024 FCC ID: 2BHJ5-HF001 Ref. #1: Attestation Statements Part 2.911(d)(5)(i) Filing Shenzhen Wushuang Electronic Technology Co., Ltd. certifies 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. Ref. #2: Attestation Statements Part 2.911(d)(5)(ii) Filing Shenzhen Wushuang Electronic Technology Co., Ltd. certifies 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. Applicant: Shenzhen Wushuang Electronic Technology Co., Ltd. Address: No. 202, New No. 6, Lezhujiao East, Huangmabu Community, Hangcheng Street, Baoan District, Shenzhen, Guangdong, China Contact Person: Alan Wang Tel.: Manager Email: [email protected] Sincerely, Signat ure:

Shenzhen Wushuang Electronic Technology Co., Ltd. Address ： No. 202, New No. 6, Lezhujiao East, Huangmabu Community, Hangcheng Street, Baoan District, Shenzhen, Guangdong, China Date: 2024-07-13 Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements Part 2.911(d)(7) Filing SUBJECT: FCC Application for FCC ID: 2BHJ5-HF001 , FRN: 0035676113 Shenzhen Wushuang Electronic Technology Co., Ltd. certifies that, as of the date of the filing of the application, Wilson Tech Service LLC is our designated U.S. agent for service of process for the above referenced FCC ID. Shenzhen Wushuang Electronic Technology Co., Ltd. accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Wilson Tech Service LLC accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Wilson Tech Service LLC Address: 1312 17th Street Suite 692, Denver, CO, 80202, US FRN:0033402033 Contact Person: Wilson Cheung Tel.: +1-716-965-5112 Email: [email protected] Sincerely, Signedon beh alf ofSignedon behalfof ShenzhenWushuangElectronicTechnology Co., Ltd. WilsonTech ServiceLLC Name:Al an Wang Nam e:WilsonCheung Title: ManagerTitle: Manager Signature:Signature: Date: 2024-07-13Date: 2024-07-13

AntennaSpecification Specifications Summary ITEMSPEC. ModelNamePCBAntenna Frequency 2400-2500MHz MAX.GAIN -0.58 dBi PolarizationHorizontal AzimuthBeamPatternOmni-directional Impedance50Ω TestAddress 16TzuChiangRoad,HsinchuIndustrialDistrictHsinchuHsien303, Taiwan TestDate 2023-08-10 TestInstrument vectornetworkanalyzer-R&SZVB20 M anufacturer ShenzhenWushuangElectronicTechnologyCo.,Ltd. Address No.202,NewNo.6,LezhujiaoEast,HuangmabuCommunity, HangchengStreet,BaoanDistrict,Shenzhen,Guangdong,China 1.Mainantenna:24 00 MHz 1.1Horizontal Frequency(MHZ):2441AntennaPolarity:Horizontal MaximumValue(dBi):-0.58 AverageGain(dBi):-3.32 MinimumGain(dBi):-53.04 1.2Vertical Frequency(MHZ):2441AntennaPolarity:Vertical MaximumValue(dBi):-4.01 AverageGain(dBi):-6.64 MinimumGain(dBi):-48.4 2 .Mainantenna:24 50 MHz 2.1Horizontal Frequency(MHZ):2441AntennaPolarity:Horizontal MaximumValue(dBi):-1.19 AverageGain(dBi):- 4 .4 6 MinimumGain(dBi):-5 5 . 8 4 2 .2Vertical Frequency(MHZ):2441AntennaPolarity:Vertical MaximumValue(dBi):- 5 . 14 AverageGain(dBi):-7.64 MinimumGain(dBi):-4 6 . 8 3.Mainantenna:2500MHz 3.1Horizontal Frequency(MHZ):2441AntennaPolarity:Horizontal MaximumValue(dBi): -1.26 AverageGain(dBi):-3.44 MinimumGain(dBi):-5 4 . 71 3 .2Vertical Frequency(MHZ):2441AntennaPolarity:Vertical MaximumValue(dBi):-4.38 AverageGain(dBi):-6.85 MinimumGain(dBi):-4 5 . 82

ShenzhenWushuangElectronicTechnologyCo., Ltd. Date: July 13, 2024 Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Subject; Request for Confidentiality FCC ID: 2BHJ5-HF001 To WhomIt May Concern, Pursuantto the provisionsof the Commission’s rules Title 47 Sections§0.457 and §0.459,we are requestingthe Commissionto withholdthe followingattachment(s)as confidential documentsfrom publicdisclosureindefinitely. Thesedocumentscontaindetailedsystemand equipmentdescriptionsand are consideredas proprietaryinformationin operationof the equipment.The publicdisclosureof these documentsmight be harmfulto our companyand wouldgive competitorsan unfair advantage in the market. SchematicDiagram Block Diagram Parts List OperationalDescription Tune-upProcedure In additionalto abovementioneddocuments,in order to complywith the marketingregulations in Title 47 CFR §2.803 and the importationrules in Title 47 CFR §2.1204,while ensuringthat businesssensitiveinformationremainsconfidentialuntil the actualmarketingof newly authorizeddevices,we requestShort Term Confidentialityof the followingattachment(s); ExternalPhotos Test SetupPhotos InternalPhotos User Manual For 45 days, pursuantto PublicNoticeDA 04-1705. OR For 180 days pursuantto KDB 726920D01. It is our understandingthat all measurementtest reports,FCC ID label formatand correspondenceduringthe certificationreviewprocesscann ot be grantedas confidential documentsand this informationwill be availablefor publicreviewonce the grant of equipment authorizationis issued. Sincerely, Signature: Name: Al an Wang Title: Manager

ShenzhenWushuangElectronicTechnologyCo., Ltd. Date: 2024/07/13 Product Model Number: WJZH-M01 FCC ID: 2BHJ5-HF001 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following: Testing Approvalapplicationsand procedures We declarethat QAI LaboratoriesLtd. is allowedto forwardall informationrelatedto the approvalprojectto the appliedcertificationbody and to the notificationentitiesand to discuss any issuesconcerningthe approvalapplication.Any and all acts carriedout by QAI Laboratories Ltd. on our behalfshall have the same effect as acts of our own. By: Title:Manager Email:[email protected] Telephone:13416820997 On behalfof:Al an Wang

ShenzhenWushuangElectronicTechnologyCo., Ltd. ModelDifferent Model name：BLUETOOTH EARPHONE FCC ID:2BHJ5-HF001 Model number: HF001, HF002, HF003, HF004, HFO05, HF006, HF007, HF008.HF009, HF010,HF011,HF012,HFO13,HF014,HF015,HF016,HF017,HF018, HF019,HF020,HF021,HF022,HF023,HF024,WS001,WS002,WS003, WS004,WS005,WS006,WS007,WS008,WS009,WS010,WS011,WS012, WS013,WS014,WS015,WS016,WS017,WS018,WS019,WS020,WS021, WS022,WS023.WS024 All model ’s the function,softwareand electriccircuitare the same,exceptthe modelnumber. Name:Alan Wang Date: 2024-07-13 Title: Manager Signatureof applicant:

Lable: BLUETOOTH EARPHONE Model: HF001 FCC ID: 2BHJ5-HF001 Input: DC 5V

FCC ID: 2BHJ5-HF001 RF Exposure Evaluation According to KDB 447498 V06 and part 2.1093，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(max. power of channel, including tune-up tolerance, mW) / (min. test separation distance, mm)] · [√f (GHz) ] ≤ 3.0 for 1-g SAR, and ≤ 7.5 for 10-g extremity SAR, where f (GHz) is theRFchanneltransmitfrequencyin GHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultis roundedtoonedecimalplaceforcomparison Here, Soa SARtestis notrequired ModeFreque ncy (MHz) Max Power (dBm) Target power W/ tolerance (dBm) Maxtune uppower tolerance (dBm) Max Power (mW) Min. Distanc e (mm) Calc. threshol ds limit GFSK 2402 1.758 2±13 1.99535.000.6185 3.0 2441 1.695 2 ± 1 3 1.99535.000.6235 3.0 2480 1.954 2±13 1.99535.000.6284 3.0 Π /4-DQ PSK 2402 2.612 2 ± 1 3 1.99535.000.6185 3.0 2441 2.518 2±13 1.99535.000.6235 3.0 2480 2.765 2 ± 1 3 1.99535.000.6284 3.0 8DPSK 2402 -1.187 -1±10 1.00005.000.3100 3.0 2441 -1.423-1±1 0 1.00005.000.3125 3.0 2480 -1.571 -1 ± 1 0 1.00005.000.3150 3.0

Page 1 of 68 Hotline:400-8868-419Fax: 86-755-27790922http://www.nct testing.cn FCC TEST REPORT FCC ID: 2BHJ5-HF001 Product:BLUETOOTHEARPHONE ModelName: HF001,HF002,HF003,HF004,HFO05,HF006, HF007,HF008.HF009,HF010,HF011,HF012, HFO13,HF014,HF015,HF016,HF017,HF018, HF019,HF020,HF021,HF022,HF023,HF024 WS001,WS002,WS003,WS004,WS005, WS006,WS007,WS008,WS009,WS010, WS011,WS012,WS013,WS014,WS015, WS016,WS017,WS018,WS019,WS020, WS021,WS022,WS023.WS024 Brand:N/A ReportNo.:NCT24028281E Preparedfor ShenzhenWushuangElectronicTechnologyCo., Ltd. No. 202, New No. 6, LezhujiaoEast, HuangmabuCommunity, HangchengStreet,BaoanDistrict,Shenzhen,Guangdong,China Preparedby ShenzhenNCT TestingTechnologyCo., Ltd. A101&2FB2, Fuqiao6th Area, XintianCommunity,FuhaiStreet, BaoanDistrict,Shenzhen,People’s Republicof China TEL: 400-8868-419 FAX: 86-755-27790922 ReportNo.:NCT24028281E Page 2 of 68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 1TESTRESULTCERTIFICATION Applicant’sname :ShenzhenWushuangElectronicTechnologyCo.,Ltd. Address: No.202,NewNo.6,LezhujiaoEast,HuangmabuCommunity, HangchengStreet,BaoanDistrict,Shenzhen,Guangdong,China Manufacture'sname:ShenzhenWushuangElectronicTechnologyCo.,Ltd. Address: No.202,NewNo.6,LezhujiaoEast,HuangmabuCommunity, HangchengStreet,BaoanDistrict,Shenzhen,Guangdong,China Productname:BLUETOOTHEARPHONE Modelname:HF001 Additionalmodel: HF002,HF003,HF004,HFO05,HF006,HF007,HF008.HF009, HF010,HF011,HF012,HFO13,HF014,HF015,HF016,HF017, HF018,HF019,HF020,HF021,HF022,HF023,HF024,WS001, WS002,WS003,WS004,WS005,WS006,WS007,WS008,WS009, WS010,WS011,WS012,WS013,WS014,WS015,WS016,WS017, WS018,WS019,WS020,WS021,WS022,WS023.WS024 Standards:FCCCFR47Part15Section15.247 Testprocedure:ANSIC63.10:2013 TestDate:Jul.08,2024toJul.12,2024 DateofIssue:Jul.12,2024 TestResult:Pass ThisdevicedescribedabovehasbeentestedbyNCT,andthetestresultsshowthatthe equipmentundertest(EUT)isincompliancewiththeFCCrequirements.Anditisapplicable onlytothetestedsampleidentifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofNCT,this documentmaybealteredorrevisedbyNCT,personalonly,andshallbenotedintherevision ofthedocument. TestEngineer: KevenWu/Engineer TechnicalManager: HenryWang/Manager ReportNo.:NCT24028281E Page 3 of 68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Contents Page 1TESTRESULTCERTIFICATION...............................................................................................................................2 2TESTSUMMARY..........................................................................................................................................................5 3TESTFACILITY.............................................................................................................................................................6 4GENERALINFORMATION..........................................................................................................................................7 4.1GENERALDESCRIPTIONOFE.U.T.....................................................................................................................7 4.2CHANNELLIST.....................................................................................................................................................8 4.3TESTSETUPCONFIGURATION............................................................................................................................9 4.4TESTMODE.........................................................................................................................................................9 5EQUIPMENTDURINGTEST....................................................................................................................................10 5.1EQUIPMENTSLIST.............................................................................................................................................10 5.2MEASUREMENTUNCERTAINTY.........................................................................................................................12 5.3DESCRIPTIONOFSUPPORTUNITS...................................................................................................................12 6CONDUCTEDEMISSION..........................................................................................................................................13 6.1E.U.T.OPERATION............................................................................................................................................13 6.2EUTSETUP.......................................................................................................................................................13 6.3TESTSET-UP(BLOCKDIAGRAMOFCONFIGURATION).................................................................................14 6.4MEASUREMENTPROCEDURE:...........................................................................................................................14 6.5CONDUCTEDEMISSIONLIMIT...........................................................................................................................14 6.6MEASUREMENTDESCRIPTION..........................................................................................................................14 6.7CONDUCTEDEMISSIONTESTRESULT.............................................................................................................14 7RADIATEDSPURIOUSEMISSIONS......................................................................................................................17 7.1EUTOPERATION...............................................................................................................................................17 7.2TESTSETUP......................................................................................................................................................18 7.3SPECTRUMANALYZERSETUP..................................................…

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ReportNo.:NCT24028281E Page51of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 12DwellTimeTest 12.1TestStandardandLimit TestStandardFCCPart15CSection15.247(a)(1) TestLimit 0.4sec 12.2TestSetup 12.3TestProcedure TheEUTmusthaveitshoppingfunctionenabled.Usethefollowingspectrumanalyzersettings: 1.Span=zerospan,centeredonahoppingchannel 2.SettheRBW=1MHz. 3.SettheVBW=1MHz. 4.Sweeptime=asnecessarytocapturetheentiredwelltimeperhoppingchannel. 5.Detectorfunction=peak. 6.Tracemode=maxhold. 7.Allowtracetofullystabilize. ReportNo.:NCT24028281E Page52of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 12.4TestData Leftearphone Package Type Pulsewidth (ms) Timeslotlength(ms) Dwelltime (ms) Limit(s)Remark DH10.384timeslotlength*1600/2/79*31.6122.880.4Pass DH31.640timeslotlength*1600/4/79*31.6262.400.4Pass DH52.889timeslotlength*1600/6/79*31.6308.160.4Pass Remark:Allthemodeshavetestedandrecordedtheworstmodeinthereport. TestPlots DH12441MHz ReportNo.:NCT24028281E Page53of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn DH32441MHz DH52441MHz ReportNo.:NCT24028281E Page54of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 13100kHzBandwidthofFrequencyBandEdgeRequirement 13.1TestStandardandLimit TestStandard FCCPart15CSection15.247(d) TestLimit inany100kHzbandwidthoutsidethefrequencybandsinwhichthe spreadspectrumintentionalradiatorinoperating,theradiofrequency powerthatisproducedbytheintentionalradiatorshallbeatleast20dB belowthatinthe100kHzbandwidthwithinthebandthatcontainsthe highestlevelofthedesiredpower,Inaddition,radiatedemissionswhich fallintherestrictedbands,asdefinedin§15.205(a),mustalsocomply withtheradiatedemissionlimitsspecifiedin15.209(a). 13.2TestSetup 13.3TestProcedure TheEUTmusthaveitshopping/Non-hoppingfunctionenabled.Usingthefollowingspectrum analyzersetting: 1.SettheRBW=100kHz. 2.SettheVBW=300kHz. 3.Sweeptime=autocouple. 4.Detectorfunction=peak. 5.Tracemode=maxhold. 6.Allowtracetofullystabilize. ReportNo.:NCT24028281E Page55of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 13.4TestData GFSKmode: Lowestchannel ReportNo.:NCT24028281E Page56of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Middlechannel Highestchannel ReportNo.:NCT24028281E Page57of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn π/4-DQPSKmode: Lowestchannel Middlechannel ReportNo.:NCT24028281E Page58of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Highestchannel ReportNo.:NCT24028281E Page59of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 8-DPSKmode: Lowestchannel Middlechannel ReportNo.:NCT24028281E Page60of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn Highestchannel ReportNo.:NCT24028281E Page61of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn GFSKNo-hoppingBandedge-leftside GFSKHoppingBandedge-leftside ReportNo.:NCT24028281E Page62of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn GFSKNo-hoppingBandedge-rightside GFSKHoppingBandedge-rightside ReportNo.:NCT24028281E Page63of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn π/4-DQPSKNo-hoppingBandedge-leftside π/4-DQPSKHoppingBandedge-leftside ReportNo.:NCT24028281E Page64of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn π/4-DQPSKNo-hoppingBandedge-rightside π/4-DQPSKHoppingBandedge-rightside ReportNo.:NCT24028281E Page65of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 8-DPSKNo-hoppingBandedge-leftside 8-DPSKHoppingBandedge-leftside ReportNo.:NCT24028281E Page66of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 8-DPSKNo-hoppingBandedge-rightside 8-DPSKHoppingBandedge-rightside ReportNo.:NCT24028281E Page67of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 14AntennaRequirement 14.1TestStandardandRequirement TestStandard FCCPart15Section15.203/247(c) Requirement 1)15.203requirement: Anintentionalradiatorshallbedesignedtoensurethatnoantennaotherthan thatfurnishedbytheresponsiblepartyshallbeusedwiththedevice.The useofapermanentlyattachedantennaorofanantennathatusesaunique couplingtotheintentionalradiator,themanufacturermaydesigntheunitso thatabrokenantennacanbereplacedbytheuser,buttheuseofastandard antennajackorelectricalconnectorisprohibited. 2)15.247(c)(1)(i)requirement: Systemsoperatinginthe2400-2483.5MHzbandthatisusedexclusivelyfor fixed.Point-to-pointoperationsmayemploytransmittingantennaswith directionalgaingreaterthan6dBiprovidedthemaximumconductedoutput poweroftheintentionalradiatorisreducedby1dBforevery3dBthatthe directionalgainoftheantennaexceeds6dBi. 14.2AntennaConnectedConstruction TheantennaisPCBAntennawhichpermanentlyattached,andtheMax.gainoftheantennais- 0.58dBi.Itcomplieswiththestandardrequirement. ReportNo.:NCT24028281E Page68of68 Hotline:400-8868-419Fax:86-755-27790922http://www.ncttesting.cn 15TESTSETUP&EUTPHOTOGRAPH Pleaseseetheattachmentfordetails. ----------------EndofReport---------------