2BGUU-REP-W66TWS wireless earphone

SHENZHENMAXCOTECHNOLOGYCO.,LTD 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Companyname:SHENZHENMAXCOTECHNOLOGYCO.,LTD Address:20thFloor,BlockA,GanfengTechnologyBuilding,No.993JiaxianRoad,Xiangjiaotang Community,BantianStreet,LonggangDistrict,ShenzhenChina ProductName:TWSwirelessearphone FCCID:2BGUU-REP-W66 Model(s):REP-W66 2.911(d)(5)(i)EquipmentType We,[SHENZHENMAXCOTECHNOLOGYCO.,LTD](“theapplicant”)certifythattheequipmentfor whichauthorizationissoughtthroughcertificationisnot:  Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules.  Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name:ChrisYaoDate:2024.6.18 TitleandCompanyname:Manager/SHENZHENMAXCOTECHNOLOGYCO.,LTD NOTE1 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

SHENZHENMAXCOTECHNOLOGYCO.,LTD 2.911(d)(5)(ii)ApplicantAttestationv1.3 Section2.911(d)(5)(ii)Certification–Applicant(CoveredList) Companyname:SHENZHENMAXCOTECHNOLOGYCO.,LTD Address:20thFloor,BlockA,GanfengTechnologyBuilding,No.993JiaxianRoad,Xiangjiaotang Community,BantianStreet,LonggangDistrict,ShenzhenChina ProductName:TWSwirelessearphone FCCID:2BGUU-REP-W66 Model(s):REP-W66 2.911(d)(5)(ii)Applicantfiling We,[SHENZHENMAXCOTECHNOLOGYCO.,LTD](“theapplicant”)certifythat,asofthedateof thefilingoftheapplication,theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 , establishedpursuantto§1.50002ofthischapter,asanentityproducingcoveredcommunications equipment. Yourssincerely, Name:ChrisYaoDate:2024.6.18 TitleandCompanyname:Manager/SHENZHENMAXCOTECHNOLOGYCO.,LTD NOTE1 Deleteoptionnotapplicabletothisapplication. NOTE2 “CoveredList”;istheListofEquipmentandServicesCoveredBySection2ofTheSecureNetworksAct,availableat https://www.fcc.gov/supplychain/coveredlist References; 1)986446D01CoveredEquipmentv01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2)FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

SHENZHENMAXCOTECHNOLOGYCO.,LTD 2.911(d)(7)USAAgentv1.5 Section2.911(d)(7)USAAgentforServiceofProcess Companyname:SHENZHENMAXCOTECHNOLOGYCO.,LTD Address:20thFloor,BlockA,GanfengTechnologyBuilding,No.993JiaxianRoad, XiangjiaotangCommunity,BantianStreet,LonggangDistrict,ShenzhenChina ProductName:TWSwirelessearphone FCCID:2BGUU-REP-W66 Model(s):REP-W66 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[SHENZHENMAXCOTECHNOLOGYCO.,LTD](“theapplicant”)designate [GSSSERVICEINC] NOTE1 forthepurposeofacceptingserviceofprocessonbehalf oftheapplicant. Applicantconsent:Weacknowledgeourconsenttoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddressofthedesignatedagentandacknowledgeour acceptanceofourobligationtomaintainanagentforserviceofprocessintheUnited Statesfornolessthanoneyearaftereitherwethegranteehavepermanently terminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S., orattheconclusionofanyCommission-relatedadministrativeorjudicialproceeding involvingtheequipment,whicheverislater. Agentobligation:Weacknowledgeourobligationtoacceptserviceofprocessinthe UnitedStatesformattersrelatedtotheapplicableequipmentatourphysicalU.S. addressandemailaddressfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipment withintheU.S.,orattheconclusionofanyCommission-relatedadministrativeor judicialproceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname:GSSSERVICEINC USAAddress:6547NAcademyBlvd#2266 ColoradoSpringsCo80918USA FRNNumber:0033402082 ContactName:MichouxLogan TelephoneNo:001-949-2990192 Email:[email protected] Applicant Companyname:SHENZHENMAXCO TECHNOLOGYCO.,LTD Address:20thFloor,BlockA,Ganfeng TechnologyBuilding,No.993Jiaxian Road,XiangjiaotangCommunity,Bantian Street,LonggangDistrict,Shenzhen China GranteeFRNNumber ：0035523117 FCCGranteeCode:2BGUU ContactName:ChrisYao TelephoneNo:+86-153-97968808 Email:[email protected] SHENZHENMAXCOTECHNOLOGYCO.,LTD 2.911(d)(7)USAAgentv1.5 Signature: Title: Signature: Title:Manager Date:2024-06-18Date:2024.6.18 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforservice ofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-nation al-security-threats-to-the-communications-supply-chain-through-the

SHENZHENMAXCOTECHNOLOGYCO.,LTD AgentAuthorization Company:SHENZHENMAXCOTECHNOLOGYCO.,LTD Address:20thFloor,BlockA,GanfengTechnologyBuilding,No.993JiaxianRoad, XiangjiaotangCommunity,BantianStreet,LonggangDistrict,ShenzhenChina ProductName:TWSwirelessearphone ModelNumber(s):REP-W66 ProductDescription:TWSwirelessearphone WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2024.6.18 Name:ChrisYao Title:Manager Company:SHENZHENMAXCOTECHNOLOGYCO.,LTD

SHENZHENMAXCOTECHNOLOGYCO.,LTD OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:2024.6.18 Subject;RequestforConfidentiality FCCID:2BGUU-REP-W66 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:ChrisYao Title:Manager

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Labelandlabellocation 2cm 1cm TWSwirelessearphone FCCID:2BGUU-REP-W66

EUTPHOTO(InternalPhotos) leftHeadphones rightHeadphones ANT ※※※※※ENDOFREPORT※※※※※

FCCID:2BGUU-REP-W66 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093， UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(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, EDR ModeMax Power(dBm) Max Power(mW) Frequency(MHz)Min. distance(mm) Calc. thresholds limit GFSK5.5123.56240251.1033.0 π/4-DQPSK5.8043.81240251.1803.0 SoaSARtestisnotrequired

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 2 Bandwidth>100MHz 3 Peak gain3dBi 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 2450MHz Avg.gain-0.85 Peakgain3.0 Efficiency82% 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 thisproprietaryinformationshallbekeptinstrictconfidenceandnotdisclosedtoanypersonorfirm withoutthep…

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ProjectNo.:ZKT-240508023E Page 1 of 70 FCCTESTREPORT FCCID:2BGUU-REP-W66 ReportNumber. .................................... :ZKT-240508023E DateofTest ...................................................... :May12,2024toJun.21,2024 Dateofissue.........................................:Jun.21,2024 Totalnumberofpages.........................70 TestResult .......................................... : PASS TestingLaboratory...........................: ShenzhenZKTTechnologyCo.,Ltd. Address ............................................... : 1/F,No.101,BuildingB,No.6,TangweiCommunityIndustrial Avenue,FuhaiStreet,Bao'anDistrict,Shenzhen,China Applicant'sname ............................. : SHENZHENMAXCOTECHNOLOGYCO.,LTD Address...............................................: 20thFloor,BlockA,GanfengTechnologyBuilding,No.993Jiaxian Road,XiangjiaotangCommunity,BantianStreet,LonggangDistrict, Shenzhen,Guangdong Manufacturer'sname ...................... : SHENZHENMAXCOTECHNOLOGYCO.,LTD Address ............................................... : 20thFloor,BlockA,GanfengTechnologyBuilding,No.993Jiaxian Road,XiangjiaotangCommunity,BantianStreet,LonggangDistrict, Shenzhen,Guangdong Testspecification: Standard................................................: FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10:2013 Testprocedure.....................................: / Non-standardtestmethod................:N/A TestReportFormNo........................: TRF-EL-112_V0 TestReportForm(s)Originator.....: ZKTTesting MasterTRF........................................: Dated:2021-04-22 ThisdevicedescribedabovehasbeentestedbyZKT,andthetestresultsshowthattheequipmentunder test(EUT)isincompliancewiththeFCCrequirements.Anditisapplicableonlytothetestedsample identifiedinthereport. Thisreportshallnotbereproducedexceptinfull,withoutthewrittenapprovalofZKT,thisdocumentmay bealteredorrevisedbyZKT,personalonly,andshallbenotedintherevisionofthedocument. Productname.....................................:TWSwirelessearphone Trademark ........................................... :RECCI Model/Typereference ......................... : REP-W66 Ratings..................................................: Input:DC5V,300mA Earphonesbattery:3.7V,30mAh,0.111Wh*2 Boxbattery:3.7V,200mAh,0.74Wh ProjectNo.:ZKT-240508023E Page 2 of 70 Testingprocedureandtestinglocation: TestingLaboratory ....................................... :ShenzhenZKTTechnologyCo.,Ltd. Address............................................................:1/F,No.101,BuildingB,No.6,TangweiCommunity IndustrialAvenue,FuhaiStreet,Bao'anDistrict, Shenzhen,China Jim.Liu Testedby(name+signature).......................: Jackson.Fang Reviewer(name+signature).......................: LakeXie Approved(name+signature) ....................... : ProjectNo.:ZKT-240508023E Page 3 of 70 TableofContents Page 1.VERSION..................................................................................................................................5 2.TESTSUMMARY...................................................................................................................6 2.1TESTFACILITY.........................................................................................................................7 2.2MEASUREMENTUNCERTAINTY......................................................................................7 3.GENERALINFORMATION..................................................................................................8 3.1GENERALDESCRIPTIONOFEUT...................................................................................8 3.2TestSetupConfiguration........................................................................................................9 3.3SupportEquipment.................................................................................................................10 3.4TestMode.................................................................................................................................11 3.5EQUIPMENTSLISTFORALLTESTITEMS................................................................12 4.EMCEMISSIONTEST........................................................................................................14 4.1Conductedemissions............................................................................................................14 4.1.1POWERLINECONDUCTEDEMISSIONLimits.......................................................14 4.1.2TESTPROCEDURE..........................................................................................................14 4.1.3DEVIATIONFROMTESTSTANDARD.......................................................................14 4.1.4TESTSETUP.......................................................................................................................15 4.1.5EUTOPERATINGCONDITIONS..................................................................................15 4.1.6TestResult............................................................................................................................16 4.2Radiatedemissions................................................................................................................18 4.2.1RadiatedEmissionLimits.................................................................................................18 4.2.2TESTPROCEDURE..........................................................................................................18 4.2.3DEVIATIONFROMTESTSTANDARD.......................................................................19 4.2.4TESTSETUP.......................................................................................................................19 4.2.5EUTOPERATINGCONDITIONS..................................................................................20 4.2.6TESTRESULTS..................................................................................................................21 5.RADIATEDBANDEMISSIONMEASUREMENT..............…

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EUTTESTPHOTO ※※※※※ENDOFREPORT※※※※※