2A86Y-TG688Bluetooth speaker

Shenzhenchengtaielectronicandtechnologyco.,LTD 6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China AttestationStatements NotCoveredEntityApplicant&NotCoveredEquipment To:FederalCommunicationsCommissionDate:Feb.2,26 7435OaklandMillsRoad, Columbia,MD21046,USA Ref:InformationRequiredbySection2.911(d)(5)(i)&(ii) FCCID:2A86Y-TG688 Shenzhenchengtaielectronicandtechnologyco.,LTD(“theapplicant”)certifiesthat,asofthedateof thefilingoftheapplication,theapplicantisnotidentifiedontheCoveredList,establishedpursuantto§ 1.50002ofreferencechapter,asanentityproducing“covered”communicationequipment.The equipmentforwhichauthorizationissoughtisnot“covered”telecommunicationsequipmentandvideo surveillanceequipmentproducedbyentitiesidentifiedontheCommission’sCoveredListthatprohibited fromreceivinganequipmentauthorizationpursuanttosection§2.903oftheFCCrules. Sincerelyyours, ApplicantSignature PrintedName:FangRuan Title:Manager Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China Tel.:+8617093468875 Email:[email protected]

Shenzhenchengtaielectronicandtechnologyco.,LTD Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China 1|Page AttestationStatements To:FederalCommunicationsCommissionDate:Feb.2,26 7435OaklandMillsRoad, Columbia,MD21046,USA Subject:AttestationofCompliancewithFCCCoveredListSoftwareRequirements FCCID:[2A86Y-TG688] ProductName:[Bluetoothspeaker] Thisletterservesasanattestationthattheequipmentidentifiedabove☒is/☒isnot(selectone)"covered" softwareasdefinedundertheFederalCommunicationsCommission(FCC)CoveredListrequirements,as outlinedinFCC22-84andKDB986446. Specifically,theundersignedcertifiesthattheequipmentforwhichauthorizationissought: 1.Doesnotcontaincybersecurityoranti-virussoftwareproducedorprovidedbyKasperskyLab, Inc.oranyofitssuccessors,assignees,parents,subsidiaries,affiliates,oranyentitythathasrebranded orrelabeledsoftwareproducedbytheaforementionedentities. 2.Doesnothavethecapabilitytostore,run,ordeliveranysoftwareidentifiedontheFCCCoveredList, includingbutnotlimitedtocybersecurityandanti-virussoftware. Tosupportthisattestation,theappendixevaluationdocumentationhasbeenpreparedandisincludedinthe certificationfiling. Thisattestationisbasedonathoroughevaluationofthedevice'sdesign,functionality,andsoftware environment.Theundersignedaffirmsthattheinformationprovidedisaccurateandcompletetothebestof theirknowledge. Sincerelyyours, ApplicantSignature PrintedName:FangRuan Title:Manager Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China Tel.:+8617093468875 Email:[email protected] Shenzhenchengtaielectronicandtechnologyco.,LTD Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China 2|Page EvaluationregardingtotheCoveredListSoftware: Compliance Methodology EvaluationProcessResults Deviceis Inherent compliance ☒ TheChipset(s)usedislimitedtorun theCybersecurityoranti-virus software. Compliance ☒ TheMemoryusedislimitedtorunthe Cybersecurityoranti-virussoftware. Compliance ☒ Thereisstoragecapacitylimitationfor storeorinstalltheCybersecurityor anti-virussoftware. Compliance ☒ Operatingsystemusedislimitedto run,installordelivertheCybersecurity oranti-virussoftware. Compliance Deviceisnot Inherent compliance ☐ EvaluationBasedonSoftware BillofMaterials(SBoM) Seeattached“SBoM“ Note:TheSBoMcontentislimited tothescopeofcoveredlist software(e.g.antivirusand cybersecuritysoftware). ☐ EvaluationBasedonScanfor Softwareonthedevice ☐ EvaluationBasedonFilesystemscan ☐ EvaluationBasedonRunning softwarecheck

Shenzhenchengtaielectronicandtechnologyco.,LTD Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China FileNo.:2026SNUSDA005 U.S.AgentLetterofAttestation To:FederalCommunicationsCommission 7435OaklandMillsRoad,Columbia,MD21046,USA Date:Feb.3,26 Ref: AttestationStatement–Part 2.911(d)(7)filing FCCID:2A86Y-TG688 [Shenzhenchengtaielectronicandtechnologyco.,LTD](“theapplicant”)certifiesthat,asofthedate ofthefilingoftheapplication,[TTSMARKETINC.](“theagent”)isourdesignatedU.S.agentfor serviceofprocessfortheabovereferenceFCCID.Theapplicantacceptstomaintainanagentfor serviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S., ortheconclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingthe equipment,whicheverislater.Theapplicantfurtheracknowledgesitisourresponsibilitytoinform theFCCwhenevertheagentinformationchanges. [TTSMARKETINC.]("theagent)understanditistheagent'sobligationtoacceptserviceofprocess intheUnitedStatesformattersrelatedtotheapplicableequipment,andatthephysicalU.S. addressandemailaddress. DesignatedU.S.Agent CompanyName:TTSMARKETINC. FRN:0036806057 GC:N/A Address:1178BroadwaySte324,NewYork,NY 10001.USA Signature: ContactPerson:MaverickLim Tel:001-(646)305-2908Email:[email protected] Applicant CompanyName:Shenzhenchengtaielectronicandtechnologyco.,LTD FRN:0033044058 Address:6thFloor,BuildingC,QinyuIndustrial Zone,Sanwei,SanweiCommunity,HangchengStreet, BaoanDistrict,Shenzhen,China Signature: ContactPerson:FangRuan Tel:+8617093468875Email:[email protected]

Shenzhenchengtaielectronicandtechnologyco.,LTD Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China (Feb.02,2026) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:ConfidentialityRequestfor:FCCID:2A86Y-TG688 PursuanttoSections0.457and0.459oftheCommission’sRules,weherebyrequestpermanent confidentialtreatmentoftheexhibitsaccompanyingthiscertificationapplicationasoutlinedbelow: BlockDiagram Schematics OperationalDescription Theaboveexhibitscontaintradesecretsand/orproprietaryinformationthatarenotpubliclyavailableand materialsthattheApplicanthasspentconsiderableeffortsindeveloping.Publicdisclosureofthesemay beharmfultotheApplicantandgiveanunfairadvantagetocompetitorsonthemarket. PursuanttoDA04-1705,theapplicantalsorequeststemporaryconfidentialtreatmentoftheexhibits outlinedbelowforaperiodof(upto180)daysfromthedateofequipmentauthorizationandpriorto marketingintheUnitedStatestopreventtheprematurereleaseofanysensitiveinformation.Applicantis awareoftheirresponsibilitytonotifyDERYCOMintheeventinformationregardingtheproductorthe productismadeavailabletothepublicbeforetherequestedperiodhasexpired.  UserManual Sincerely, (Signature) Title:Manager Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China Tel.:+8617093468875 Email:[email protected]

Shenzhenchengtaielectronicandtechnologyco.,LTD Address:6thFloor,BuildingC,QinyuIndustrialZone,Sanwei, SanweiCommunity,HangchengStreet,BaoanDistrict,Shenzhen,China (Feb.02,2026) FederalCommunicationsCommission AuthorizationandEvaluationDivision 7435OaklandMillsRoad Columbia,MD21046 Subject:AgentAuthorizationforFCCID:2A86Y-TG688 I,theundersigned,herebyauthorize(ShenzhenBKCTestingCo.,Ltd.)toactonourbehalfinallmatters relatingtothisapplicationforequipmentcertification. Anyactcarriedoutby(ShenzhenBKCTestingCo.,Ltd.)shallhavethesameeffectasourownandI acknowledgethatallresponsibilityforcomplyingwiththetermsandconditionsofcertification,as specifiedbyDERYCOMCERTIFICATIONSERVICES,INC.,stillresideswith(Shenzhenchengtai electronicandtechnologyco.,LTD). WecertifythatwearenotsubjecttoadenialoffederalbenefitsthatincludesFCCbenefitspursuantto Section5301oftheAnti-DrugAbuseActof1988,21U.S.C.§862,andthatnopartytotheapplication,as definedin47CFR§1.2002(b),issubjecttoadenialoffederalbenefitsthatincludesFCCbenefits pursuanttothatsection. Sincerely, (Signature) (FullnameofcontactpersonlistedonFCC’swebsite) (Title):Manager Tel:+8617093468875 Fax:+8617093468875 Email:[email protected]

FCCID:2A86Y-TG688 ExternalPhotos

Label: Bluetoothspeaker Model：TG688 FCCID:2A86Y-TG688

FCCID:2A86Y-TG688 InternalPhotos PCBAntenna

FCCID:2A86Y-TG688 RFExposureEvaluation AccordingtoKDB447498D01GeneralRFExposureGuidancev06andpart2.1093， UnlessspecificallyrequiredbythepublishedRFexposureKDBprocedures,standalone 1-gheadorbodyand10-gextremitySARevaluationforgeneralpopulationexposure conditions,bymeasurementornumericalsimulation,isnotrequiredwhenthe correspondingSARTestExclusionThresholdcondition(s),listedbelow,is(are)satisfied. For100MHzto6GHzandtestseparationdistances≤5.0mm,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, SoaSARtestisnotrequired 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 2402-0.28 0±1 11.25895.000.39023.0 2441-0.50 0±1 11.25895.000.39343.0 2480-0.47 0±1 11.25895.000.39653.0 Π /4-DQ PSK 24020.48 0 ± 1 11.25895.000.39023.0 24410.31 0 ± 1 11.25895.000.39343.0 24800.28 0 ± 1 11.25895.000.39653.0

2.4G-2.48G频段板载PIFA天线测试报告 SPECIFICATIONS Frequency（MHz）2400-2480 PeakGain（dBi）2.499 AverageGain（dBi）＞-4 VSWR＜3.2 Impedance（Ω）50Ω AntennaTypePlannarInvertedFAntennaonboard PolarizationLinear 测试环境：中科国技暗室测试系统 Z X Y 天线实物及物理尺寸 天线无源S参数： 驻波比（ VSWR ）、回波损耗（ ReturnLoss ）及史密斯圆图 天线效率及增益 Frequency（MHz）Gain（dBi）Effciency（%）AverageGain（dBi）Efficiency（dB） 24001.43359.329%-2.717-2.267 24100.92751.861%-3.416-2.852 24200.82952.112%-3.166-2.831 24300.88149.299%-3.258-3.072 24401.19250.672%-3.144-2.952 24501.68853.067%-2.735-2.752 24602.19459.423%-2.276-2.260 24702.11856.680%-2.438-2.466 24802.49961.727%-2.112-2.095 Average1.52954.908%-2.806-2.616 Peak2.49961.727%-2.112-2.095 天线2440MHz2D-ThetaPattern 天线2440MHz2D-PhiPattern 天线2440MHz3D-HorizontalPattern 天线2440MHz3D-VerticalPattern 2440MHz3D-TotalPattern

FCC ID EDR FCC_BT (Part15.247) Test Data FCC ID:2A86Y-TG688 Report No. :BKC26010426AE-1 TableofContents 1. Duty Cycle..................................................................................................................................................................... 2 2.‐20dB Bandwidth..........................................................................................................................................................5 3. 99% Occupied Bandwidth............................................................................................................................................ 8 4. Peak Output Power.....................................................................................................................................................11 5. Spurious Emissions..................................................................................................................................................... 14 6. Bandedge....................................................................................................................................................................20 7. Carrier Frequencies Separation (Hopping).................................................................................................................28 8. Number of Hopping Channel (Hopping).................................................................................................................... 31 9. Dwell Time (Hopping).................................................................................................................................................32 Page 2 of 37 1. Duty Cycle ConditionAntennaRateFrequency(MHz)Dutycycle(%)Duty_factor NVNTANT11-DH12402.0030.655.14 NVNTANT11-DH12441.0029.035.37 NVNTANT11-DH12480.0030.655.14 NVNTANT12-DH12402.0029.035.37 NVNTANT12-DH12441.0029.035.37 NVNTANT12-DH12480.0033.334.77 Duty_Cycle_NVNT_ANT1_1-DH1_2402 Duty_Cycle_NVNT_ANT1_1-DH1_2441 Page 3 of 37 Duty_Cycle_NVNT_ANT1_1-DH1_2480 Duty_Cycle_NVNT_ANT1_2-DH1_2402 Page 4 of 37 Duty_Cycle_NVNT_ANT1_2-DH1_2441 Duty_Cycle_NVNT_ANT1_2-DH1_2480 Page 5 of 37 2. -20dB Bandwidth ConditionAntennaModulationFrequency(MHz)-20dB BW(MHz)if larger than CFS NVNTANT11-DH12402.001.032Yes NVNTANT11-DH12441.001.040Yes NVNTANT11-DH12480.001.106Yes NVNTANT12-DH12402.001.298Yes NVNTANT12-DH12441.001.292Yes NVNTANT12-DH12480.001.285Yes -20dB_Bandwidth_NVNT_ANT1_1-DH1_2402_00 -20dB_Bandwidth_NVNT_ANT1_1-DH1_2441_00 Page 6 of 37 -20dB_Bandwidth_NVNT_ANT1_1-DH1_2480_00 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2402_00 Page 7 of 37 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2441_00 -20dB_Bandwidth_NVNT_ANT1_2-DH1_2480_00 Page 8 of 37 3. 99% Occupied Bandwidth ConditionAntennaModulationFrequency(MHz)99%%BW(MHz) NVNTANT11-DH12402.000.939 NVNTANT11-DH12441.000.961 NVNTANT11-DH12480.001.087 NVNTANT12-DH12402.001.217 NVNTANT12-DH12441.001.218 NVNTANT12-DH12480.001.225 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2402_00 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2441_00 Page 9 of 37 99%_Occupied_Bandwidth_NVNT_ANT1_1-DH1_2480_00 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2402_00 Page 10 of 37 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2441_00 99%_Occupied_Bandwidth_NVNT_ANT1_2-DH1_2480_00 Page 11 of 37 4. Peak Output Power Condition Antenna Modulation Frequency (MHz) Max. Conducted Power(dBm) Max. Conducted Power(mW) Limit(mW) Result NVNTANT11-DH12402.00-0.280.94125Pass NVNTANT11-DH12441.00-0.500.89125Pass NVNTANT11-DH12480.00-0.470.90125Pass NVNTANT12-DH12402.000.481.12125Pass NVNTANT12-DH12441.000.311.07125Pass NVNTANT12-DH12480.000.281.07125Pass Peak_Output_Power_NVNT_ANT1_1-DH1_2402_00 Peak_Output_Power_NVNT_ANT1_1-DH1_2441_00 Page 12 of 37 Peak_Output_Power_NVNT_ANT1_1-DH1_2480_00 Peak_Output_Power_NVNT_ANT1_2-DH1_2402_00 Page 13 of 37 Peak_Output_Power_NVNT_ANT1_2-DH1_2441_00 Peak_Output_Power_NVNT_ANT1_2-DH1_2480_00 Page 14 of 37 5. Spurious Emissions ConditionAntennaModulationTX Mode Ref_level(dBm) Spurious MAX.Value(dBm) LimitResult NVNTANT11-DH12402.00-0.536-46.977-20.536Pass NVNTANT11-DH12441.00-0.811-48.290-20.811Pass NVNTANT11-DH12480.00-0.700-49.132-20.700Pass NVNTANT12-DH12402.00-0.541-46.801-20.541Pass NVNTANT12-DH12441.00-0.814-49.032-20.814Pass NVNTANT12-DH12480.00-0.675-49.450-20.675Pass 1_Reference_Level_NVNT_ANT1_1-DH1_2402_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2402_00 Page 15 of 37 1_Reference_Level_NVNT_ANT1_1-DH1_2441_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2441_00 Page 16 of 37 1_Reference_Level_NVNT_ANT1_1-DH1_2480_00 2_Spurious_Emissions_NVNT_ANT1_1-DH1_2480_00 Page 17 of 37 1_Reference_Level_NVNT_ANT1_2-DH1_2402_00 2_Spurious_Emissions_NVNT_ANT1_2-DH1_2402_00 Page 18 of 37 1_Reference_Level_NVNT_ANT1_2-DH1_2441_00 2_Spurious_Emissions_NVNT_ANT1_2-DH1_2441_00 Page 19 of 37 1_Reference_Level_NVNT_ANT1_2-DH1_2480_00 2_Spurious_Emissions_NVNT_ANT1_2-DH1_2480_00 Page 20 of 37 6. Bandedge ConditionAntennaModulationTX ModeRef_level(dBm)Bandedge MAX.ValueLimitResult NVNTANT11-DH12402.00-0.536-52.523-20.536Pass NVNTANT11-DH1Hopping_LCH-0.537-47.820-20.537Pass NVNTANT11-DH12480.00-0.700-57.055-20.700Pass NVNTANT11-DH1Hopping_HCH-0.479-47.686-20.479Pass NVNTANT12-DH12402.00-0.541-50.061-20.541Pass NVNTANT12-DH1Hoppin g_LCH-0.462-47.674-20.462Pass NVNTANT12-DH12480.00-0.675-54.649-20.675Pass NVNTANT12-DH1Hopping_HCH-0.452-47.892-20.452Pass 1_Reference_Level_NVNT_ANT1_1-DH1_2402_00 2_Bandedge_NVNT_ANT1_1-DH1_2402_00 Page 21 of 37 1_Reference_Level_Hopping_NVNT_ANT1_1-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_1-DH1_Hopping 1_Reference_Level_NVNT_ANT1_1-DH1_2480_00 Page 22 of 37 2_Bandedge_NVNT_ANT1_1-DH1_2480_00 Page 23 of 37 1_Reference_Level_Hopping_NVNT_ANT1_1-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_1-DH1_Hopping Page 24 of 37 1_Reference_Level_NVNT_ANT1_2-DH1_2402_00 2_Bandedge_NVNT_ANT1_2-DH1_2402_00 Page 25 of 37 1_Reference_Level_Hopping_NVNT_ANT1_2-DH1_Hopping 2_Band_Edge_(Hopping)_NVNT_ANT1_2-DH1_Hopping Page 26 of 37 1_Reference_Level_NVNT_ANT1_2-DH1_2480_00 2_Bandedge_NVNT_ANT1_2-D…

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ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC26010426AE-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage1of30 TESTREPORT Applicant:Shenzhenchengtaielectronicandtechnologyco.,LTD Address: 6thFloor,BuildingC,QinyuIndustrialZone,Sanwei,Sanwei Community,HangchengStreet,BaoanDistrict,Shenzhen,China Manufacturer:Shenzhenchengtaielectronicandtechnologyco.,LTD Address: 6thFloor,BuildingC,QinyuIndustrialZone,Sanwei,Sanwei Community,HangchengStreet,BaoanDistrict,Shenzhen,China ProductName:Bluetoothspeaker ModelNumber:TG688 Trademark:/ FCCID:2A86Y-TG688 TestDate:Nov.31,2025toJan.15,2026 DateofReport:Jan.15,2026 TestResult: ThisdevicedescribedabovehasbeentestedbyBKC,andthetest resultsshowthattheequipmentundertest(EUT)isincompliance withtheStandardrequirements.Anditisapplicableonlytothetested sampleidentifiedinthereport. TestProcedureUsed: Standards:FCCCFRTitle47Part15SubpartCSection15.247 ANSIC63.10-2020+Cor1+2023 Preparedby(TestEngineer): StenHuang Reviewer(Supervisor): CaseyWang Approved(Manager): JerryLiao ShenzhenBKCTestingCo.,Ltd.ReportNo.:BKC26010426AE-1 TestReportTel:4000-875-3820755-84829082Web:Http://www.bkc-lab.comPage2of30 TABLEOFCONTENT 1.GeneralInformation......................................................................................5 1.1.DescriptionofDevice(EUT).......................................................................................................................5 1.2.ChannelList..................................................................................................................................................5 1.3.Summaryoftestresult................................................................................................................................6 1.4.SpecialAccessoriesandAuxiliaryEquipment........................................................................................6 1.5.Testmode......................................................................................................................................................6 1.6.Testconfiguration.........................................................................................................................................7 1.7.BlockDiagram...............................................................................................................................................7 1.8.TestConditions.............................................................................................................................................7 1.9.MeasurementUncertainty(95%confidencelevels,k=2)......................................................................8 1.10.TestFacility..................................................................................................................................................8 1.11.TestEquipment...........................................................................................................................................9 2.Conductedemissionatthemainsterminalstest....................................11 2.1.Limit..............................................................................................................................................................11 2.2.TestSetup....................................................................................................................................................11 2.3.TestProcedure............................................................................................................................................11 2.4.TestResult..................................................................................................................................................12 3.RadiatedSpuriousEmissions...................................................................14 3.1.Limit..............................................................................................................................................................14 3.2.TestSetup....................................................................................................................................................15 3.3.TestProcedure............................................................................................................................................17 3.4.TestResult...................................................................................................................................................18 4.MaximumPeakOutputPower....................................................................23 4.1.Limit..............................................................................................................................................................23 4.2.TestSetup....................................................................................................................................................23 4.3.TestProcedure............................................................................................................................................23 4.4.TestResult...................................................................................................................................................23 5.-20dBBandwidthMeasurement...............................................................24 5.1.Limit..............................................................................................................................................................24 5.2.TestSetup....................................................................................................................................................24 5.3.TestProcedure............................................................................................................................................24 5.4.TestResult...................................................................................................................................................24 6.CarrierFrequencySeparationTest…

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FCCID:2A86Y-TG688 TestPhotos