2BKIZ-X28Protable Wireless Speaker

Xuchanghaoyushangmao Co., Ltd.

Application Details

Equipment Class: DSS - Part 15 Spread Spectrum Transmitter
Date of Grant: Dec 23, 2025
Application Purpose: Original Equipment
Equipment Note: Protable Wireless Speaker
Frequency Range: 2402.00000000 - 2480.00000000
Company: Xuchanghaoyushangmao Co., Ltd.
Country: China

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Users Manual

FCCID：2BKIZ-X28 FCCID：2BKIZ-X28

Attestation Statements

Rev1/26/2023 (XuchanghaoyushangmaoCo.,Ltd.) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2025-12-19 Ref:AttestationStatementsPart2.911(d)(5)(i)Filing FCCID:2BKIZ-X28 (XuchanghaoyushangmaoCo.,Ltd.)certifiesthattheequipmentforwhichauthorizationissoughtis not“covered”equipmentprohibitedfromreceivinganequipmentauthorizationpursuanttosection 2.903oftheFCCrules. (XuchanghaoyushangmaoCo.,Ltd.)certifiesthattheequipmentforwhichauthorizationissoughtdoes notincludecybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab,Inc.oranyofits successorsandassignees,includingequipmentwithintegratedKasperskyLab,Inc.(oranyofits successorsandassignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01CoveredEquipmentGuidancesectionB(2a). Deviceisinherentlycompliantbasedonhardwarelimitationsorsoftwarecontrols. or ASoftwareBillofMaterials(SBOM)isprovidedtotheTCBforreview,and Theend-userorthirdpartiescannotinstalladditionalsoftwareonthisdevice. Sincerely, (Wangwanyu) Rev1/26/2023 (XuchanghaoyushangmaoCo.,Ltd.) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA Date:2025-12-19 Ref:AttestationStatementsPart2.911(d)(5)(ii)Filing FCCID:2BKIZ-X28 (XuchanghaoyushangmaoCo.,Ltd.)certifiesthat,asofthedateofthefilingoftheapplication,the applicantisnotidentifiedontheCoveredList(asaspecificallynamedentityoranyofitssubsidiariesor affiliates)asanentityproducing“covered”equipment. Sincerely, (Wangwanyu)

Cover Letter(s)

AntennaDescribe 1：AntennaDescribe AntennaPCB AntennaGain 4.51dBi FrequencyRange2.4Ghz-2.483Ghz ConnectorTypeDirect Locationofmearement(company name) SHENZHENSHIXINZHONGXI N TECHNOLOGY.CO.,LTD 2：ExternalViewDrawing Pictureof antenna Address：Room 102, Building 5, Shengyada Company, No. 443, Guangming Street, Dongzhou Community, Guangming Subdistrict, Guangming District, Shenzhen City 3：MeasurementResult 3.1ReturnLoss(S11) 3.2SmithChart 3.3Gain

Cover Letter(s)

XuchanghaoyushangmaoCo.,Ltd. Date：2025-12-19 ProductModelNumber:X28 FCCID：2BKIZ-X28 Towhomitmayconcern Re:ProductCertificationRepresentativeAuthorizationLetter WeauthorizeQAILaboratoriesLtd.3980NorthFraserWay,BurnabyB.C. CanadaV5J5K5toactonourbehalfonallmattersconcerningtheabove namedequipment. Thisshallincludethefollowing: Testing Approvalapplicationsandprocedures WedeclarethatQAILaboratoriesLtd.isallowedtoforwardallinformation relatedtotheapprovalprojecttotheappliedcertificationbodyandtothe notificationentitiesandtodiscussanyissuesconcerningtheapproval application.AnyandallactscarriedoutbyQAILaboratoriesLtd.onour behalfshallhavethesameeffectasactsofourown. By: ContactListedonFCCWesbite Title:Manager Email:[email protected] Telephone:15836517502 Onbehalfof:XuchanghaoyushangmaoCo.,Ltd.

Cover Letter(s)

XuchanghaoyushangmaoCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:December19,2025 Subject;RequestforConfidentiality FCCID:2BKIZ-X28 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthese documentsmightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantage inthemarket. SchematicDiagram BlockDiagram PartsList OperationalDescription Tune-upProcedure SoftwareSecurityRequirementsforUNIIdevices 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:Wangwanyu Title:Manager

Cover Letter(s)

XuchanghaoyushangmaoCo.,Ltd. ProductSimilarityDeclaration Productname:ProtableWirelessSpeaker Modelname:X28 FCCID:2BKIZ-X28 We(XuchanghaoyushangmaoCo.,Ltd.)herebystatethatallthe modelsareelectricalidenticalincludingthesamesoftware parameterandhardwaredesign(i.e.,circuitdesign,PCBLayout, RFmodule/circuit,antennatype(s)andantennalocation, componentsonPCB,etc.,),samemechanicalstructureand design(includingproductenclosure,materials,etc.,),Themodel hastwocolors.theseproductaresamePCBLayout,Schematics, BOM.Onlyfordifferentappearancecolorfordifferentmarket require. Signature: Name:Wangwanyu Title:Manager Place:Room601,6thFloor,Unit4,Building1,QiyiRoadAdministrativeOfficeGarden,Weidu District,XuchangCity,HenanProvince Date:2025-12-19

ID Label/Location Info

Size:50*30mm

RF Exposure Info

MAXTestingCo.,Ltd.ReportNo.:MAX25110197P01-R01RF RFTESTREPORT ReportReferenceNo. ....................... :MAX25110197P01-R01RF FCCID.................................................:2BKIZ-X28 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature)..: Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue ......................................... :December17,2025 TestingLaboratoryName ................ : MAXLABTestingCo.,Ltd. Address.................................................: 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname ............................... : XuchanghaoyushangmaoCo.,Ltd. Address.................................................: Room601,6thFloor,Unit4,Building1,QiyiRoadAdministrative OfficeGarden,WeiduDistrict,XuchangCity,HenanProvince Testspecification..............................: Standard................................................:KDB447498D01GeneralRFExposureGuidancev06 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLABTesting Co.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthereader's interpretationofthereproducedmaterialduetoitsplacementandcontext. Testitemdescription........................: ProtableWirelessSpeaker TradeMark............................................: N/A Manufacturer.........................................: XuchanghaoyushangmaoCo.,Ltd. Model/Typereference ......................... : X28 ListedModels......................................: N/A Modulation...........................................:GFSK,π/4DQPSK,8-DPSK Frequency .............................................. From2402MHzto2480MHz Rating ..................................................... :DC3.7VFromBatteryorDC5VbyUSBport Result.....................................................:PASS MAXTestingCo.,Ltd.ReportNo.:MAX25110197P01-R01RF RFEXPOSUREEVALUATIONMETHOD AccordingtoKDB447498D01GeneralRFExposureGuidancev06,Unlessspecificallyrequiredbythe publishedRFexposureKDBprocedures,standalone1-gheadorbodyand10-gextremitySARevaluation forgeneralpopulationexposureconditions,bymeasurementornumericalsimulation,isnotrequiredwhen thecorrespondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-gSARtestexclusion thresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance,mm)]·[√f (GHz) ] ≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f (GHz) istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeusedto evaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF)Radiation asspecifiedin§1.1307(b) EUTSpecification Frequencyband(Operating)WLAN:2.412GHz~2.462GHz WLAN:5.150GHz~5.250GHz WLAN:5.725GHz~5.850GHz OthersBT:2402-2480MHz DevicecategoryPortable(<20cmseparation) Mobile(>20cmseparation) Others ExposureclassificationOccupational/Controlledexposure(S=5mW/cm 2 ) GeneralPopulation/Uncontrolledexposure(S=1mW/cm 2 ) AntennadiversitySingleantenna Multipleantennas Txdiversity Rxdiversity Tx/Rxdiversity Max.outputpower4.881dBm(0.000308W) Antennagain(Max)4.51dBi EvaluationappliedMPEEvaluation SAREvaluation MAXTestingCo.,Ltd.ReportNo.:MAX25110197P01-R01RF RFEXPOSUREEVALUATIONMETHOD SARTestExclusionThresholdsfor100MHz–6GHzand≤50mm ApproximateSARTestExclusionPowerThresholdsatSelectedFrequenciesandTestSeparation DistancesareillustratedinthefollowingTable. The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparationdistance, mm)]·[√f(GHz)]≤3.0for1-gSARand≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation Theresultisroundedtoonedecimalplaceforcomparison Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis ≤ 50 mmandfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmisappliedtodetermineSARtest exclusion. MAXTestingCo.,Ltd.ReportNo.:MAX25110197P01-R01RF Maximummeasuredtransmitterpower. BR+EDR+BLE Operating Mode Freque ncy Measur ed Power max. power Antenna Gain min.test separation distance [√f(GHz)] ResultLimit (MHz)(dBm)(mW)(dBi)(mm) GFSK 24024.8813.084.5151.5500.95373 24413.2232.104.5151.5620.65623 2480-2.4260.574.5151.5750.18023 π/4DQPSK 24024.2752.684.5151.5500.82953 24412.6111.824.5151.5620.57013 2480-2.9340.514.5151.5750.16033 8-DPSK 24024.4202.774.5151.5500.85773 24412.7311.884.5151.5620.58603 2480-2.8690.524.5151.5750.16273 The1-gand10-gSARtestexclusionthresholdsfor100MHzto6GHzattestseparation distances≤50mmaredeterminedby: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]·[√f(GHz)] ThetestResultislessthan3.0for1-gSARand≤7.5for10-gextremitySAR. Conclusion:NoSARisrequired.

Test Report

MAXLABTestingCo.,Ltd.ReportNo.:MAX25110197P01-R01 Page 1 of42 FCCPART15SUBPARTCTESTREPORT FCCPART15.247 ReportReferenceNo. ....................... :MAX25110197P01-R01 FCCID. ................................................ :2BKIZ-X28 Compiledby (position+printedname+signature)..: Engineer/CindyZheng Supervisedby (position+printedname+signature) .. : Manager/HaleyWen Approvedby (position+printedname+signature)..: RFManager/VivianJiang Dateofissue.........................................:December17,2025 TestingLaboratoryName................: MAXLABTestingCo.,Ltd. Address ................................................. : 1/F,BuildingB,XinshidaiGRPark,ShiyanStreet,Bao'anDistrict, Shenzhen,Guangdong,518052,People’sRepublicofChina Applicant’sname...............................: XuchanghaoyushangmaoCo.,Ltd. Address ................................................. : Room601,6thFloor,Unit4,Building1,QiyiRoadAdministrative OfficeGarden,WeiduDistrict,XuchangCity,HenanProvince Testspecification..............................: Standard................................................: FCCPart15.247: ANSIC63.10-2020 KDB558074D01V05r02:April2,2019 MAXLABTestingCo.,Ltd.Allrightsreserved. Thispublicationmaybereproducedinwholeorinpartfornon-commercialpurposesaslongasthe MAXLABTestingCo.,Ltd.isacknowledgedascopyrightownerandsourceofthematerial.MAXLAB TestingCo.,Ltd.takesnoresponsibilityforandwillnotassumeliabilityfordamagesresultingfromthe reader'sinterpretationofthereproducedmaterialduetoitsplacementandcontext. Testitemdescription........................: ProtableWirelessSpeaker TradeMark............................................: N/A Manufacturer.........................................: XuchanghaoyushangmaoCo.,Ltd. Model/Typereference ......................... : X28 ListedModels ...................................... : N/A Modulation...........................................:GFSK,π/4DQPSK,8-DPSK Frequency..............................................From2402MHzto2480MHz Rating.....................................................:DC3.7VFromBatteryorDC5VbyUSBport Result.....................................................:PASS MAXLABTestingCo.,Ltd.ReportNo.:MAX25110197P01-R01 Page 2 of42 TESTREPORT EquipmentunderTest:ProtableWirelessSpeaker Model/Type:X28 ListedModels:N/A ModelDeclaration:N/A Applicant : XuchanghaoyushangmaoCo.,Ltd. Address: Room601,6thFloor,Unit4,Building1,QiyiRoadAdministrative OfficeGarden,WeiduDistrict,XuchangCity,HenanProvince Manufacturer : XuchanghaoyushangmaoCo.,Ltd. Address: Room601,6thFloor,Unit4,Building1,QiyiRoadAdministrative OfficeGarden,WeiduDistrict,XuchangCity,HenanProvince TestResult:PASS Thetestreportmerelycorrespondstothetestsample. Itisnotpermittedtocopyextractsofthesetestresultwithoutthewrittenpermissionofthetest laboratory. MAXLABTestingCo.,Ltd.ReportNo.:MAX25110197P01-R01 Page 3 of42 Contents 1TESTSTANDARDS..............................................................................................................................4 2SUMMARY.................................................................................................................................................5 2.1GeneralRemarks..........................................................................................................................................5 2.2ProductDescription.....................................................................................................................................5 2.3EquipmentUnderTest.................................................................................................................................5 2.4ShortdescriptionoftheEquipmentunderTest(EUT).............................................................................5 2.5EUToperationmode.....................................................................................................................................5 2.6BlockDiagramofTestSetup.......................................................................................................................6 2.7RelatedSubmittal(s)/Grant(s)...................................................................................................................6 2.8Modifications.................................................................................................................................................6 3TESTENVIRONMENT........................................................................................................................7 3.1Addressofthetestlaboratory....................................................................................................................7 3.2TestFacility...................................................................................................................................................7 3.3Environmentalconditions............................................................................................................................7 3.4Summaryofmeasurementresults..............................................................................................................8 3.5Statementofthemeasurementuncertainty..............................................................................................8 3.6EquipmentsUsedduringtheTest..............................................................................................................9 4TESTCONDITIONSANDRESULTS.......................................................................................11 4.1ACPowerConductedEmission................................................................................................................11 4.2RadiatedEmission......................................................................................................................................14 4.3MaximumPeakOutputPower...................................................................................................................20 4.420dBBandwidth.....................................…

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Test Setup Photos

FCCID：2BKIZ-X28 FCCID：2BKIZ-X28