2BUXQ-MT1478DIY Bluetooth speaker

GOLDENHORSEARTS&CRAFTSCO.,LTD CoveredEquipmentCertificationAttestationLetter 03/06/2026 FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 USA ATTN.:ReviewingEngineer FCCID:2BUXQ-MT1478 GOLDENHORSEARTS&CRAFTSCO.,LTD(“theapplicant”)certifiesthattheequipment forwhichauthorizationissoughtisnot“covered”equipmentprohibitedfromreceivingan equipmentauthorizationpursuanttosection2.903oftheFCCrules. Note:Iftheequipmentforwhichtheapplicantseeksauthorizationisproducedby anyoftheentitiesidentifiedonthecurrentCoveredList,theapplicantshould includeanexplanationonwhytheequipmentisnot“covered”equipment. GOLDENHORSEARTS&CRAFTSCO.,LTD(“theapplicant”)certifiesthat,asofthedate ofthefilingoftheapplication,theapplicantisnotidentifiedontheCoveredList(asa specificallynamedentityoranyofitssubsidiariesoraffiliates)asanentityproducing “covered”equipment. GOLDENHORSEARTS&CRAFTSCO.,LTD (“theapplicant”)certifiesthattheequipment forwhichauthorizationissoughtdoesnotincludecybersecurityoranti-virussoftware producedorprovidedbyKasperskyLab,Inc.oranyofitssuccessorsandassignees, includingequipmentwithintegratedKasperskyLab,Inc.(oranyofitssuccessorsand assignees)cybersecurityoranti-virussoftwarepursuanttoDA-24-886andKDB986446 D01CoveredEquipmentGuidancesectionB(2a). Signed: Printedname:RitaDong Title:sales CompanyName:GOLDENHORSEARTS&CRAFTSCO.,LTD Date:03/06/2026

GOLDEN HORSE ARTS & CRAFTS CO., LTD * the applicant must designate a contact located in the United States for purposes of acting as the appl icant’s agent for service of process, regardless of whether the applicant is a domestic or forei gn ent ity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 03/06/2026 TO: Feder al Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 ATTN.: Reviewing Engineer FCC ID: 2BUXQ-MT1478 FRN of applicant: 0038076832 Per section 2.911(d)(7) of the FCC rules, [GOLDEN HORSE ARTS & CRAFTS CO., LTD] (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: C ompany Name: FCC US Agent, LLC FCC Registration Number (FRN): 0033402884 Physical U.S. Company Address: 3722 Illinois Avenue, Saint Charles, IL 60174, USA Contact Person: Tim Payne Agent Email Address: [email protected] The abov e contact person accepts the obligation for service of process. The appl icant 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. A pplicant Signed: Agent Signed (if different from Applicant): Signed: Printed name: Rita Dong Title: sales Company Name: GOLDEN HORSE ARTS & CRAFTS CO., LTD Date: 03/06/2026 S igned: Printed name: Tim Payne Title: sales Company Name: FCC US Agent, LLC Date: 03/06/2026

DATE:03/06/2026 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 AuthoritytoActasAgent Onourbehalf,IappointShenzhenEUTestingLaboratoryLimited (101,BuildingB1,FuqiaoFourthArea,QiaotouCommunityFuhaiSubdistrictBaoan District,Shenzhen,China)(NameofAgentcompanynameandaddress)toactasour agentinthepreparationofthisapplicationforequipmentcertification.Icertifythat submitteddocumentsproperlydescribethedeviceorsystemforwhichequipment certificationissought.Ialsocertifythateachunitmanufactured,importedormarketed,as definedintheFederalCommunicationsCommission’sregulationswillhaveaffixedtoita labelidenticaltothatsubmittedforapprovalwiththisapplication. Forinstanceswhereourauthorizedagentsignstheapplicationforcertificationonour behalf,Iacknowledgethatallresponsibilityforcomplyingwiththetermsandconditions forcertification,stillresideswithGOLDENHORSEARTS&CRAFTSCO.,LTD (NO.1XINGYEROADBAILONGSHANSUB-DISTRICTYUNHECOUNTYLISHUI ZHEJIANG,CHINA)(ApplicantNameandaddress) Signed: Printedname:RitaDong Title:sales CompanyName:GOLDENHORSEARTS&CRAFTSCO.,LTD Date:03/06/2026

Date03/06/2026 FederalCommunicationsCommission Authorization&EvaluationDivision 7345OaklandMillsRoad Columbia,Maryland21046 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorizeComplianceTesting,LLCtoactonourbehalfinallmatters relatingtoapplicationforequipmentauthorization,includingthesigningofalldocumentsrelatingto thesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderissubjecttothedenialof benefits,includingFCCbenefits,pursuanttoSection5301oftheAnti-DrugAbuseActof1988,21 U.S.C.853(a). Sincerely, Signed: Printedname:RitaDong Title:sales CompanyName:GOLDENHORSEARTS&CRAFTSCO.,LTD Date:03/06/2026

DATE03/06/2026 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:___2BUXQ-MT1478______ ProductName:___DIYBluetoothspeaker___ RequestforConfidentiality PursuanttoSections0.457and0.459ofthecommission’srules,weherebyrequestthat thefollowingdocumentsbeheldconfidential: (Listherethedocumentsforwhichyouareseekingconfidentiality–forexample...)  Schematics Blockdiagram Operationdescription Thesematerialscontaintradesecretsandproprietaryinformationandarenot customarilyreleasedtothepublic.Thepublicdisclosureofthisinformationmightbe harmfultothecompanyandprovideunjustifiedbenefitstoourcompetitors. Signed: Printedname:RitaDong Title:sales CompanyName:GOLDENHORSEARTS&CRAFTSCO.,LTD Date:03/06/2026

DATE:03/06/2026 EquipmentAutorisationDivision FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 FCCID:2BUXQ-MT1478 ProductName:DIYBluetoothspeaker RequestforShort-TermConfidentiality PursuanttoSections0.457and0.459ofthecommissionrules,andinaccordancewiththeFCCPublicnotice datedJune15,2004(DA04-1705),weherebyrequestshort-termconfidentialityforthefollowingitemspriorto marketingthedevice.: TestSetupPhotos ExternalPhotos InternalPhotos UserManual Theapplicantrequeststheexhibitsselectedaboveasshorttermconfidentialbewithheldfrompublicview foraperiodof180daysfromthedateoftheGrantofEquipmentAuthorizationandpriortomarketing.This istoavoidprematurereleaseofsensitiveinformationpriortomarketingorreleaseoftheproducttothe public. Signed: Printedname:RitaDong Title:sales CompanyName:GOLDENHORSEARTS&CRAFTSCO.,LTD Date:03/06/2026

LabelLocation Label Size:25*30mm ProductName:DIYBluetoothspeaker ModelNo.:MT1478 FCCID:2BUXQ-MT1478

RFEXPOSUREEVALUATION FCCID:2BUXQ-MT1478 AccordingtoFCC1.1310:Thecriterialistedinthefollowingtableshallbeused toevaluatetheenvironmentimpactofhumanexposuretoradiofrequency(RF) RadiationasspecifiedinKDB447498D01: RoutineSARevaluationreferstothatspecificallyrequiredby§2.1093,using measurementsorcomputersimulation.WhenroutineSARevaluationisnot required,portabletransmitterswithoutputpowergreaterthantheapplicable lowthresholdrequireSARevaluationtoqualifyforTCBapproval. BT: Channel (MHz) Maximum outputpower (dBm) Tuneup tolerance (dBm) MaxTune UpPower (dBm) Distance (mm) Calculation results Limit Operating Mode 2402-1.81-1.81±1-0.8150.2573 BT 2441-2.76-2.76±1-1.7650.2083 2480-2.15-2.15±1-1.1550.2423 24020.720.72±11.7250.4613 2441-0.29-0.29±10.7150.3683 24800.250.25±11.2550.4203 24021.251.25±12.2550.5203 24410.290.29±11.2950.4213 24800.750.75±11.7550.4713 BLE: Channel (MHz) Maximum outputpower (dBm) Tuneup tolerance (dBm) MaxTune UpPower (dBm) Distance (mm) Calculation results Limit Operating Mode 2402-1.93-1.93±1-0.9350.2503 BLE2440-2.90-2.90±1-1.9050.2023 2480-2.37-2.37±1-1.3750.2303 TestResults:PASS.

TESTREPORT ReportNo.:8427EU122109W2 Applicant:GOLDENHORSEARTS& CRAFTSCO.,LTD Address:NO.1XINGYEROADBAILONGSHANSUB-DISTRICT YUNHECOUNTYLISHUIZHEJIANG,CHINA ProductName:DIY Bluetoothspeaker ModelNo.:MT1478 Trademark:N/A FCC ID:2BUXQ-MT1478 Test Standard(s):47 CFRPart 15.247 Test Result:Pass Dateof Receipt:Jan. 21, 2026 Test Date:Jan. 22, 2026- Feb. 02, 2026 Dateof Issue:Feb. 26, 2026 ISSUEDBY: SHENZHENEU TESTINGLABORATORYLIMITED Preparedby:Reviewedand Approvedby: LandonQiu/ EngineerSallyZhang/Manager Page2 of 57ReportNo.: 8427EU122109W2 TRF Version:A01 RevisionRecord ReportVersionIssuedDateDescriptionStatus V0Feb. 26, 2026OriginalValid Page3 of 57ReportNo.: 8427EU122109W2 TRF Version:A01 Tableof Contents 1COVERPAGE...................................................................................................................................................1 2GENERALINFORMATION........................................................................................................................5 2.1APPLICANTINFORMATION...................................................................................................................5 2.2MANUFACTURERINFORMATION...........................................................................................................5 2.3FACTORYINFORMATION......................................................................................................................5 2.4GENERALDESCRIPTIONOFE.U.T......................................................................................................5 2.5TECHNICALINFORMATIONOFE.U.T....................................................................................................6 3TESTSUMMARY.......................................................................................................................................7 3.1TESTSTANDARD................................................................................................................................7 3.2TESTVERDICT...................................................................................................................................7 3.3TESTLABORATORY............................................................................................................................8 4TESTCONFIGURATION...........................................................................................................................9 4.1TESTENVIRONMENT...........................................................................................................................9 4.2TESTEQUIPMENT...............................................................................................................................9 4.3DESCRIPTIONOFSUPPORTUNIT......................................................................................................11 4.4TESTMODE.....................................................................................................................................11 4.5DESCRIPTIONOFCALCULATION........................................................................................................11 4.5.1FieldStrengthCalculation..................................................................................................11 4.5.2DisturbanceCalculation.....................................................................................................11 4.6MEASUREMENTUNCERTAINTY..........................................................................................................11 4.7DEVIATIONFROMSTANDARDS..........................................................................................................12 4.8ABNORMALITIESFROMSTANDARDCONDITION..................................................................................12 5EVALUATIONRESULTS(EVALUATION)..............................................................................................13 5.1ANTENNAREQUIREMENT..................................................................................................................13 5.1.1Test Specification...............................................................................................................13 5.1.2Test Data ............................................................................................................................13 6RADIOSPECTRUMMATTERTESTRESULTS(RF) ............................................................................14 6.1CONDUCTEDEMISSIONATACPOWERLINE......................................................................................14 6.1.1Test Specification...............................................................................................................14 6.1.2E.U.T.Operation.................................................................................................................14 6.1.3Test SetupDiagram...........................................................................................................14 6.1.4Test Data ............................................................................................................................14 6.26DB BANDWIDTH.............................................................................................................................17 6.2.1Test Specification...............................................................................................................17 6.2.2E.U.T.Operation.................................................................................................................17 6.2.3Test SetupDiagram...........................................................................................................18 6.2.4Test Data ............................................................................................................................18 6.3MAXIMUMCONDUCTEDOUTPUTPOWER...........................................................................................19 6.3.1Test Specification...............................................................…

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Inverted F Antenna Specification Summary ITEM ANT SPEC Model Name 2.4G ANT Horizontal Vertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.26 -0.76 -0.58 -5.25 -2.46 -1.86 MAX. Gain -0.58dBi Polarization Horizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance 50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) Adress: Building 9, Jinshi Garden, No. 107 Shihua West Road, Xiangzhou District, Zhuhai City, Guangdong Province, China Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -1.26174 -30.0801 -7.18716 2450 -0.765802 -36.5604 -7.48023 2500 -0.585582 -22.0315 -6.59127 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dB) Frequency (MHz) Max Min Avg 2400 -5.2537 -22.1424 -12.4294 2450 -2.4652 -24.5837 -10.4702 2500 -1.86120 -29.5214 -9.20432 ANT Test Labs：Attestation of Global Compliance Co., Ltd.