2BPUV-R19smart ring

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Covered Equipment Attestation Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BPUV-R19 R19 We, Applicant Company Name: Dongguan Huikang Intelligent Technology Co., Ltd. Address: Room 101, No. 3, Humen Nanxin Road, Humen Town, Dongguan City, Guangdong Province, China Phone: +86-13603034005 certify 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. This includes the cybersecurity and anti-virus software produced or provided by Kaspersky Lab, Inc. or any of ist successors and assignees. We certify 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. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2025-11-20 Signature Date Name / Title: Shengjie Zhan / Manager Company: Dongguan Huikang Intelligent Technology Co., Ltd. Address: Room 101, No. 3, Humen Nanxin Road, Humen Town, Dongguan City, Guangdong Province, China Phone: +86-13603034005 Fax: N/A E-Mail: [email protected]

Due Diligence Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern FCC ID Model name 2BPUV-R19 R19 Pursuant to KDB 986446 D01 Covered Equipment Guidance the evaluation of the product above shows compliance for the following reasons: Compliance Evaluation process Results Inherent compliance The chipset(s) used is not capable of running the cybersecurity and/or anti-virus software Compliance The memory used does not allow the running the cybersecurity and/or anti-virus software Compliance The storage capacity does not allow the running the cybersecurity and/or anti-virus software Compliance The operating system used is not capable of running the cybersecurity and/or anti-virus software Compliance No inherent compliance Based on software bill of material Based on scan for running software on the device Based on filesystem scan for cybersecurity and/or anti-virus software The equipment for which authorization is sought complies with the rules and fulfils the requirements as detailed in the above mentioned KDB. Evaluation performed by Company Name: Shenzhen Huaxia Testing Technology Co., Ltd Contact Name: Yoyo Zhou Address: 1F., Block A of Tongsheng Technology Building, Huahui Road, Dalang Street, Longhua District, Shenzhen, China Phone: +86-755-26648642 Email: [email protected] Signature: Date: 2025-11-20

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BPUV-R19 R19 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Part List • the Tune up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, 2025-11-20 Signature Date Name / Title: Shengjie Zhan / Manager Company: Dongguan Huikang Intelligent Technology Co., Ltd. Address: Room 101, No. 3, Humen Nanxin Road, Humen Town, Dongguan City, Guangdong Province, China Phone: +86-13603034005 Fax: N/A E-Mail: [email protected]

Externalphotos FCC ID: 2BPUV-R19

Internalphotos FCC ID: 2BPUV-R19 ANT

ShenzhenHuaxiaTestingTechnologyCo.,Ltd. 1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad,DalangStreet,LonghuaDistrict, Shenzhen,China Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V05 ReportTemplateRevisionDate:2021-11-03 RFExposureEvaluationReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonlyto thesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20251002398E-02 Applicant: DongguanHuikangIntelligentTechnologyCo.,Ltd. AddressofApplicant: Room101,No.3,HumenNanxinRoad,HumenTown,DongguanCity, GuangdongProvince EquipmentUnderTest(EUT): EUTName:smartring TestModelNo.:R19 ModelNo.:R19 BrandName:N/A FCCID:2BPUV-R19 Standards: 47CFRPart1.1307 47CFRPart2.1093 447498D04InterimGeneralRFExposureGuidancev01 DateofReceipt:2025-10-15 DateofTest: 2025-10-15to2025-11-04 DateofIssue:2025-11-20 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20251002398E-02 Page:2of7 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20251002398E-02Rev.01 Initialreport 2025-11-20 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20251002398E-02 Page:3of7 2Contents Page 1VERSION............................................................................................................................................................................2 2CONTENTS........................................................................................................................................................................3 ..................................................................................................................................................................................................3 3GENERALINFORMATION..............................................................................................................................................4 3.1CLIENTINFORMATION...................................................................................................................................................4 3.2GENERALDESCRIPTIONOFEUT...................................................................................................................................4 3.3GENERALDESCRIPTIONOFBLE...................................................................................................................................4 4SAREVALUATION...........................................................................................................................................................5 4.1RFEXPOSURECOMPLIANCEREQUIREMENT.................................................................................................................5 4.1.1StandardRequirement......................................................................................................................................5 4.1.2Limits....................................................................................................................................................................5 4.1.3EUTRFExposure..............................................................................................................................................7 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20251002398E-02 Page:4of7 3GeneralInformation 3.1ClientInformation Applicant: DongguanHuikangIntelligentTechnologyCo.,Ltd. AddressofApplicant: Room101,No.3,HumenNanxinRoad,HumenTown,DongguanCity, GuangdongProvince Manufacturer: DongguanHuikangIntelligentTechnologyCo.,Ltd. AddressofManufacturer: Room101,No.3,HumenNanxinRoad,HumenTown,DongguanCity, GuangdongProvince Factory: DongguanHuikangIntelligentTechnologyCo.,Ltd. AddressofFactory: Room101,No.3,HumenNanxinRoad,HumenTown,DongguanCity, GuangdongProvince 3.2GeneralDescriptionofEUT ProductName: smartring ModelNo.: R19 TestModelNo R19 TradeMark: N/A EUTSupportsRadiosapplication: Bluetoothmode 2402-2480MHz SoftwareVersion: V2.13 HardwareVersion: YC093CMBV0.5 SampleType: MobilePortableFixLocation EUTPowerSupply: Li-ionbattery:DC3.7V15mAh,ChargebyDC5VforChargebox 3.3GeneralDescriptionofBLE OperationFrequency: 2402MHz~2480MHz BluetoothVersion: V5.0 ModulationTechnique: NonFrequencyHoppingSpreadSpectrum(NFHSS) ModulationType: GFSK NumberofChannel: BLE:40 TransferRate:BLE:1Mbps TestSoftwareofEUT: BTTool AntennaType:PCBantenna AntennaGain:0.17dBi ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20251002398E-02 Page:5of7 4SAREvaluation 4.1RFExposureComplianceRequirement 4.1.1StandardRequirement 447498D04InterimGeneralRFExposureGuidancev01 3.2.SARTestReductionGuidance SARtestreductionprocedures[Glossary]allowusingaparticularsetoftestdataas representativeofother,similar,testconditions.Thismaybeappliedfordatawithindifferenttest positions(e.g.body,head,extremity),wirelessmodes(e.g.Wi-Fi,cellular),andfrequencybands.This testreductionprocessprovidesfortheuseoftestdataforonespecificchannel,whilereferencingto thosedatafordemonstratingcomplianceinotherrequiredchannelsforeachtestpositionofan exposurecondition,withintheoperatingmodeofafrequencyband.Thisislimitedspecificallytowhen thereported1-gor10-gSARforthemid-bandorhighestoutputpowerchannelmeetsanyofthe followingconditions. 4.1.2Limits SAR-basedthresholdsarederivedbasedonfrequency,power,andseparationdistanceoftheRF source.Theformuladefinesthethresholdsingeneralforeitheravailablemaximumtime averaged powerormaximumtime-averagedERP,whicheverisgreater. IftheERPofadeviceisnoteasilydetermined,suchasforaportabledevicewithasmallform factor,theapplicantmayusetheavailablemaximumtime-averagedpowerexclusivelyifthe deviceantennaorradiatingstructuredoesnotexceedanelectricallengthofλ/4. Asfordeviceswithantennasoflengthgreaterthanλ/4wherethegainisnotwelldefined,but alwayslessthanthatofahalf-wavedipole(…

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ShenzhenfirstlinecableCo.,LTD Add:21Building,Wanfeng98IndustrialCity,ShajingStreet,Baoan District,Shenzhen AntennaSpecificationforApproval CustomerName：ShenzhenMoYoungtechnologyco.,LTD ProductName：2.4Gantennalength57.85mm Antennatype:monopole PartNO.:C10-35-2.5 WriteBy：ZhuangJiebin IssuedDate:2023-10-08 client: R&DDept BusinessDept ApprovedBy ISDN R&DDept EngineerDept Approval ZhuangCaihong ZhuangJiebinZhuangJiebin Antenna size ProductSpecification A.ElectricalCharacteristics Frequency2400MHz ~2500MHzVSWR<3.0 Efficiency>30% Impedance50 OhmPolarization LineGain 0.17dBi B.Material&MechanicalCharacteristics MaterialofRadiatorCu CableType1.019PRed ConnectorType:NO Dimension C.Environmental OperationTemperature-30°C~+80 °CStorageTemperature-30°C~+ 85°C TestEquipment&Conditions 1. NetworkAnalyzers : Agilent8753D5071C 2.CommunicationsTestSet: AgilentE5525C 3.3DChamberTestSystem LineGain 0DBi Effiency&Gain 2.40-2.17DBi 2.4400.12DBi 2.480.17DBi RadiationPattern:

ShenzhenHuaxiaTestingTechnologyCo.,Ltd. 1F.,BlockAofTongshengTechnologyBuilding,HuahuiRoad,DalangStreet,LonghuaDistrict, Shenzhen,China Telephone:+86-755-26648640 Fax:+86-755-26648637 Website:www.cqa-cert.com ReportTemplateVersion:V05 ReportTemplateRevisionDate:2021-11-03 TestReport Thetestreportiseffectiveonlywithbothsignatureandspecializedstamp,Theresult(s)showninthisreportreferonly tothesample(s)tested.WithoutwrittenapprovalofCQA,thisreportcan’tbereproducedexceptinfull. ReportNo.:CQASZ20251002398E-01 Applicant: DongguanHuikangIntelligentTechnologyCo.,Ltd. AddressofApplicant: Room101,No.3,HumenNanxinRoad,HumenTown,DongguanCity, GuangdongProvince EquipmentUnderTest(EUT): Product:smartring ModelNo.:R19 TestModelNo.:R19 BrandName:N/A FCCID:2BPUV-R19 Standards:47CFRPart15,SubpartC KDB558074D0115.247MeasGuidancev05r02 ANSIC63.10:2020 DateofReceipt:2025-10-15 DateofTest: 2025-10-15to2025-11-04 DateofIssue:2025-11-20 TestResult:PASS* *Intheconfigurationtested,theEUTcompliedwiththestandardsspecifiedabove. TestedBy: (LewisZhou) ReviewedBy: (TimoLei) ApprovedBy: (JackAi) ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20251002398E-01 Page: 2 of 49 1Version RevisionHistoryOfReport ReportNo.Version Description IssueDate CQASZ20251002398E-01Rev.01Initialreport2025-11-20 ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20251002398E-01 Page: 3 of 49 2TestSummary TestItemTestRequirementTestmethodResult AntennaRequirement 47CFRPart15,SubpartCSection 15.203/15.247(c) ANSIC63.102020PASS ACPowerLine Conducted Emission 47CFRPart15,SubpartCSection 15.207 ANSIC63.102020PASS ConductedPeakOutput Power 47CFRPart15,SubpartCSection 15.247(b)(3) ANSIC63.102020PASS 6dBOccupied Bandwidth 47CFRPart15,SubpartCSection 15.247(a)(2) ANSIC63.102020PASS PowerSpectralDensity 47CFRPart15,SubpartCSection 15.247(e) ANSIC63.102020PASS Band-edgeforRF ConductedEmissions 47CFRPart15,SubpartCSection 15.247(d) ANSIC63.102020PASS RFConductedSpurious Emissions 47CFRPart15,SubpartCSection 15.247(d) ANSIC63.102020PASS RadiatedSpurious Emissions 47CFRPart15,SubpartCSection 15.205/15.209 ANSIC63.102020PASS Restrictedbandsaround fundamentalfrequency (RadiatedEmission) 47CFRPart15,SubpartCSection 15.205/15.209 ANSIC63.102020PASS ShenzhenHuaxiaTestingTechnologyCo.,Ltd. ReportNo.:CQASZ20251002398E-01 Page: 4 of 49 3Contents Page 1VERSION..........................................................................................................................................................................2 2TESTSUMMARY............................................................................................................................................................3 3CONTENTS......................................................................................................................................................................4 4GENERALINFORMATION...........................................................................................................................................5 4.1CLIENTINFORMATION.................................................................................................................................................5 4.2GENERALDESCRIPTIONOFEUT.................................................................................................................................5 4.3ADDITIONALINSTRUCTIONS........................................................................................................................................7 4.4TESTENVIRONMENT...................................................................................................................................................8 4.5DESCRIPTIONOFSUPPORTUNITS...............................................................................................................................8 4.6TESTCONFIGURATION................................................................................................................................................8 4.7STATEMENTOFTHEMEASUREMENTUNCERTAINTY....................................................................................................9 4.8TESTLOCATION........................................................................................................................................................10 4.9TESTFACILITY..........................................................................................................................................................10 4.10DEVIATIONFROMSTANDARDS................................................................................................................................10 4.11OTHERINFORMATIONREQUESTEDBYTHECUSTOMER..........................................................................................10 4.12EQUIPMENTLIST.....................................................................................................................................................11 5TESTRESULTSANDMEASUREMENTDATA.....................................................................................................12 5.1ANTENNAREQUIREMENT..........................................................................................................................................12 5.2CONDUCTEDEMISSIONS............................................................................................................................................13 5.3CONDUCTEDPEAKOUTPUTPOWER..........................................................................................................................17 5.46DBOCCUPYBANDWIDTH........................................................................................................................................22 5.5POWERSPECTRALDENSITY......................................................................................................................................25 5.6BAND-EDGEFORRFCONDUCTEDEMISSIONS.................................................................................................…

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Setupphotos 1Photographs-EUTTestSetup 1.1RadiatedSpuriousEmission 9kHz~30MHz: 30MHz~1GHz: FCC ID: 2BPUV-R19 Above1GHz: 1.2ConductedEmissionsTestSetup 1.3RFConductedmeasurement