2AON7-RT50A2TRUE WIRELESS EARBUDS

FCC Warning 15.19 Labeling requirements. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. 15.21 Information to user. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. 15.105 Information to the user.Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -Reorient or relocate the receiving antenna. -Increase the separation between the equipment and receiver. -Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.-Consult the dealer or an experienced radio/TV technician for help. FCC RF Exposure Warning Statement:This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment can be used in portable exposure conditions. FCC ID:2AON7-RT50A2

TZUMIElectronics,LLC 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Companyname: TZUMIElectronics,LLC Address: 16EAST34THSTREET16THFLOOR,NY,NY10016,UnitedStates ProductName: TRUEWIRELESSEARBUDS FCCID: 2AON7-RT50A2 Model(s): RT50A,D30443PS,30443PS,7646HD2,D7646HC2,7646HC2,D8502PS,8502PS, D7646HDC,7646HDC,7646HD 2.911(d)(5)(i)EquipmentType We,[ TZUMIElectronics,LLC ](“theapplicant”)certifythattheequipmentforwhichauthorizationis soughtthroughcertificationisnot:  Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules.  Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name: EzraAzar Date: 2026-04-19 TitleandCompanyname: Foreigntradesales 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

TZUMIElectronics,LLC 2.911(d)(5)(ii)ApplicantAttestationv1.2 Section2.911(d)(5)(ii)Certification–Applicant(CoveredList) Companyname: TZUMIElectronics,LLC Address: 16EAST34THSTREET16THFLOOR,NY,NY10016,UnitedStates ProductName: TRUEWIRELESSEARBUDS FCCID: 2AON7-RT50A2 Model(s): RT50A,D30443PS,30443PS,7646HD2,D7646HC2,7646HC2,D8502PS,8502PS, D7646HDC,7646HDC,7646HD 2.911(d)(5)(ii)Applicantfiling We,[ TZUMIElectronics,LLC ](“theapplicant”)certifythat,asofthedateofthefilingoftheapplication, theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 ,establishedpursuantto §1.50002ofthischapter,asanentityproducingcoveredcommunicationsequipment. Yourssincerely, Name: EzraAzar Date: 2026-04-19 TitleandCompanyname: Foreigntradesales 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

TZUMIElectronics,LLC 2.911(d)(7)USAAgentv1.2 Section2.911(d)(7)USAAgentforServiceofProcess Companyname: TZUMIElectronics,LLC Address: 16EAST34THSTREET16THFLOOR,NY,NY10016,UnitedStates ProductName: TRUEWIRELESSEARBUDS FCCID: 2AON7-RT50A2 Model(s): RT50A,D30443PS,30443PS,7646HD2,D7646HC2,7646HC2,D8502PS,8502PS, D7646HDC,7646HDC,7646HD 2.911(d)(7)USADesignatedAgentforServiceofProcess We,[ TZUMIElectronics,LLC ](“theapplicant”)designate[ TZUMIElectronics,LLC ] NOTE1 forthepurposeof acceptingserviceofprocessonbehalfoftheapplicant. Applicantconsent:WeAcknowledgeourconsenttoacceptserviceofprocessintheUnitedStates formattersrelatedtotheapplicableequipment,andatthephysicalU.S.addressandemailaddress ofthedesignatedagentandacknowledgeouracceptanceofourobligationtomaintainanagentfor serviceofprocessintheUnitedStatesfornolessthanoneyearaftereitherthegranteehas permanentlyterminatedallmarketingandimportationoftheapplicableequipmentwithintheU.S.,or theconclusionofanyCommission-relatedadministrativeorjudicialproceedinginvolvingthe equipment,whicheverislater. Agentobligation:WeAcknowledgeourobligationtoacceptserviceofprocessintheUnitedStates formattersrelatedtotheapplicableequipmentatourphysicalU.S.addressandemailaddressforno lessthanoneyearaftereitherthegranteehaspermanentlyterminatedallmarketingandimportation oftheapplicableequipmentwithintheU.S.,ortheconclusionofanyCommission-related administrativeorjudicialproceedinginvolvingtheequipment,whicheverislater. USAAgent Companyname: TZUMIElectronics,LLC Address: 16EAST34THSTREET16THFLOOR, NY,NY10016,UnitedStates FRN: 0027104157 ContactName: EzraAzar TelephoneNo: (212)689-6008 Email: [email protected] Applicant Companyname: TZUMIElectronics,LLC Address: 16EAST34THSTREET16THFLOOR, NY,NY10016,UnitedStates FRN: 0027104157 FCCGranteeCode: 2AON7 ContactName: EzraAzar TelephoneNo: (212)689-6008 Email: [email protected] TZUMIElectronics,LLC 2.911(d)(7)USAAgentv1.2 Signature: Title:Foreigntradesales Signature: Title:Foreigntradesales Date:2026-04-19Date:2026-04-19 NOTE1:AnapplicantlocatedintheUnitedStatesmaydesignateitselfastheagentforserviceofprocess. Reference;FederalRegisterdocument2022-28263publishedon02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threat s-to-the-communications-supply-chain-through-the

DifferencesDeclaration Towhomconcern, WecompanyTZUMIElectronics,LLC Herebydeclares: Theproductmodel(s)D30443PS,30443PS,7646HD2,D7646HC2, 7646HC2,D8502PS,8502PS,D7646HDC,7646HDC,7646HDare identicalinthePCBlayout,electronicschematicandantennawith RT50A,onlydifferentinmodelnames. Sincerelyyours, Name(inprint):EzraAzar Companyname:TZUMIElectronics,LLC Tel:(212)689-6008

TZUMIElectronics,LLC OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 Date:2026-04-19 Subject;RequestforLongTermConfidentiality FCCID:2AON7-RT50A2 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,weare requestingtheCommissiontowithholdthefollowingattachment(s)asconfidentialdocumentsfrom publicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredasproprietary informationinoperationoftheequipment.Thepublicdisclosureofthesedocumentsmightbeharmfulto ourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BlockDiagram OperationalDescription Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatandcorrespondenceduring thecertificationreviewprocesscannotbegrantedasconfidentialdocumentsandthisinformationwillbe availableforpublicreviewoncethegrantofequipmentauthorizationisissued. Sincerely, Signature: Name:EzraAzar Title:Foreigntradesales

LetterofAuthorization Company:TZUMIElectronics,LLC Address:16EAST34THSTREET16THFLOOR,NY,NY10016,UnitedStates ProductName:TRUEWIRELESSEARBUDS ModelNumber:RT50A,D30443PS,30443PS,7646HD2,D7646HC2,7646HC2,D8502PS,8502PS, D7646HDC,7646HDC,7646HD FCCIdentifier:2AON7-RT50A2 WeauthorizeMiCOMLabsInc,575BoulderCourt,Pleasanton,California94566,USA,toactonour behalfonallmattersconcerningtheabovenamedequipment. AnyindividualwithinMiCOMLabsisauthorizedtoactonourbehalfandtakeactionontheapplication. WedeclarethatMiCOMLabsInc,575BoulderCourt,Pleasanton,California94566,USA,isallowedto forwardallinformationrelatedtotheapprovalprojecttotheFederalCommunicationCommissionand todiscussanyissuesconcerningtheapprovalapplication.AnyandallactscarriedoutbyMiCOMLabs onourbehalfshallhavethesameeffectasactsofourown. Name:EzraAzarDate:2026-04-19 Title:Foreigntradesales

FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page1of4 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 AppendixIIExternalPhotos FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page2of4 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page3of4 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page4of4 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00

FCCIDLabelLocation DuetotheproductsizeistoosmallfortheFCCIDlabeltobeprinted,thentheFCCIDisplacedintheusermanual.See belowformoredetails. Usermanualasbelow:

FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page1of5 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 AppendixIIIInternalPhotos FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page2of5 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 BTANT FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page3of5 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page4of5 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 BTANT FCCID:2AON7-RT50A2ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page5of5 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00

TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page1of9 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen,Guangdon g,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 HealthTestReport For Applicantname: TZUMIElectronics,LLC Address: 16EAST34THSTREET16THFLOOR,NY,NY10016,United States EUTname: TRUEWIRELESSEARBUDS Brandname: TZUMISOUNDPLAY Modelnumber: RT50A Seriesmodelnumber: Refertosection2.4 FCCID: 2AON7-RT50A2 IssuedBy Companyname: BTFTestingLab(Shenzhen)Co.,Ltd. Address: Plant101,201and301,Building1,Block2,TantouIndustrialPark, TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Reportnumber: BTF260409R01202 Teststandards: 47CFRPart2SubpartJSection2.1093 Testconclusion: Pass Dateofsamplereceipt: 2026-04-09 Testdate: 2026-04-09to2026-04-15 Dateofissue: 2026-04-16 Preparedby: Approvedby: ChrisLiu/Project engineer Ryan.CJ/EMCmanager Note:Allthetestresultsinthisreportonlyrelatedtothetestingsamples.Whichcanbeduplicatedcompletelyforthelegalusewithapprovalof applicant;itshallnotbereproducedexceptinfullwithoutthewrittenapprovalofBTFTestingLab(Shenzhen)Co.,Ltd.,Alltheobjectionsshouldbe raisedwithinthirtydaysfromthedateofissue.Tovalidatethereport,youcancontactus. ReportNumber:BTF260409R01202 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page2of9 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen,Guangdon g,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 RevisionHistory VersionIssuedateRevisionscontent R_V02026-04-16Original ReportNumber:BTF260409R01202 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page3of9 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen,Guangdon g,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 TableofContents 1Introduction...............................................................................................................................................................4 1.1LaboratoryLocation..........................................................................................................................................4 1.2LaboratoryFacility............................................................................................................................................4 1.3Announcement..................................................................................................................................................4 2ProductInformation..................................................................................................................................................5 2.1ApplicationInformation.....................................................................................................................................5 2.2ManufacturerInformation.................................................................................................................................5 2.3FactoryInformation...........................................................................................................................................5 2.4GeneralDescriptionofEquipmentunderTest(EUT)......................................................................................5 2.5TechnicalInformation.......................................................................................................................................5 3RFOutputPower.......................................................................................................................................................6 4AppliedReferenceDocuments................................................................................................................................7 5RFExposureLimit....................................................................................................................................................7 6RFExposureAssessment........................................................................................................................................8 ReportNumber:BTF260409R01202 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page4of9 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen,Guangdon g,China Email:[email protected]:+86-755-23146130http://www.btf-lab.comVersion:1/00 1Introduction 1.1LaboratoryLocation Testlocation:BTFTestingLab(Shenzhen)Co.,Ltd. Address: Plant101,201and301,Building1,Block2,TantouIndustrialPark,Tantou Community,SonggangStreet,Bao'anDistrict,Shenzhen,Guangdong,China Description: AllmeasurementfacilitiesusedtocollectthemeasurementdataarelocatedatPlant 101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity, SonggangStreet,Bao'anDistrict,Shenzhen,Guangdong,China Phonenumber:+86-0755-23146130 Faxnumber:+86-0755-23146130 1.2LaboratoryFacility Thetestfacilityisrecognized,certified,oraccreditedbythefollowingorganizations: FCC-DesignationNo.:CN1409 BTFTestingLab(Shenzhen)Co.,Ltd.hasbeenaccreditedasatestinglaboratorybyFCC(Federal CommunicationsCommission).ThetestfirmRegistrationNo.is695374. CNAS-RegistrationNo.:CNASL17568 BTFTestingLab(Shenzhen)Co.,Ltd.isaccreditedtoISO/IEC17025:2017GeneralRequirementsfor theCompetenceofTestingandCalibrationlaboratoriesforthecompetenceoftesting.TheRegistration No.isCNASL17568. A2LA-RegistrationNo.:6660.01 BTFTestingLab(Shenzhen)Co.,Ltd.isaccreditedinaccordancewiththerecognizedInternational StandardISO/IEC17025:2017Generalrequirementsforthecompetenceoftestingandcalibration laboratories. 1.3Announcement (1)Thet…

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深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 1 OF 11 2.0X1.2X0.6 (mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012- 1) Engineering Specification 1. Product Number YF 2012 H2 P 2G45 00 1 2 3 4 5 6 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 2 OF 11 2. Features *Stable and reliable in performances *Low temperature coefficient of frequency *Low profile, compact size *RoHS compliance *SMT processes compatible 3. Applications *Bluetooth earphone systems *Hand-held devices when WiFi /Bluetooth functions are needed, e.g., Smart phone. *IEEE802.11 b/g/n *ZigBee *Wireless PCMCIA cards or USB dongle 4. Description Yingfeng chip antenna series are specially designed for WiFi/Bluetooth applications. Based on yingfeng proprietary design and processes, this chip antenna has excellent stability and sensitivity to consistently provide high signal reception efficiency. 5. Electrical Specifications (80 x 40 mm 2 ground plane) 5-1. Electrical Table Characteristics Specifications Unit Outline Dimensions 2.0x1.2x0.6 mm Working Frequency 2400~2500 MHz VSWR 2 Max. Impedance 50  Polarization Linear Polarization Gain Peak 2.5 (typical) dBi Efficiency 75 (typical) % 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 3 OF 11 5-2. Return Loss & VSWR Return Loss (S 11 ) VSWR(S 11 ) 6. Antenna Dimensions & Test Board (unit: mm) a. Antenna Dimensions 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 4 OF 11 b. Test Board with Antenna Unit: mm 7. Radiation Pattern (80 x 40 mm 2 ground plane) 7-1. 3D Gain Pattern @ 2442 MHz Z X Y Y X 80 40 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 5 OF 11 7-2. 3D Efficiency Table Frequency( MHz) 2400 2410 2420 2430 2442 2450 2460 2470 2480 2490 2500 Efficiency (dB) -1.4 -1.0 -0.9 -0.7 -0.7 -0.8 -0.9 -1.1 -1.2 -1.3 -1.4 Efficiency (%) 72.8 73.7 74.3 74.4 75.5 75.0 74.0 73.6 73.1 72.6 71.5 Gain (dBi) 2.1 2.2 2.3 2.4 2.5 2.5 2.4 1.8 1.7 1.6 1.4 7-3. 3D Efficiency vs. Frequency Efficiency vs. Frequency 50 60 70 80 90 100 24002410242024302442245024602470248024902500 Frequency(MHz) Efficiency(%) Y X Z X Y Z 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 6 OF 11 8. Layout Guide a. Solder Land Pattern: Land pattern for soldering (gray marking areas) is as shown below. Depending on Customer’s requirement, matching circuit as shown below is also recommended. Top View Bottom View 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 7 OF 11 Unit： mm 9. Frequency tuning a. Chip antenna tuning scenario： b. Matching circuit：(Center frequency is about 2442 MHz @ 80 x 40 mm 2 ground plane) System Matching Circuit Component Location Description Vendor Toleranc e 1 1.2 pF* Murata (0402) ±0.1 pF 2 10PF* Murata(0402) ±0.5 PF 3 N/A* - - Fine tuning element 4 1.5 pF* Murata (0402) ±0.1 pF *Typical reference values which may need to be changed when circuit Matching circuit Feed 4. Fine tuning elemet 1 2 3 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 8 OF 11 boards or part vendors are different. c. Fine tuning element vs. Center frequency 10. Soldering Conditions a. Typical Soldering Profile for Lead-free Process Time 60-180s 60-150s 20- Pre- 150-200° 217°C 260° Temperature (°C) 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 9 OF 11 11. Packing (1) Quantity/Reel: 5000 pcs/Reel (2) Plastic tape: 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 10 OF 11 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.6(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012-1) Engineering Specification DOCUMENT YF2012H2P2G4500 REV. NO. C PAGE 11 OF 11

TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page1of40 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-0755-23146130http://www.btf-lab.comVersion:1/00 RFTestReport For Applicantname:TZUMIElectronics,LLC Address:16EAST34THSTREET16THFLOOR,NY,NY10016,UnitedStates EUTname:TRUEWIRELESSEARBUDS Brandname:TZUMISOUNDPLAY Modelnumber:RT50A Seriesmodelnumber:Refertosection2.4 FCCID:2AON7-RT50A2 IssuedBy Companyname:BTFTestingLab(Shenzhen)Co.,Ltd. Address: Plant101,201and301,Building1,Block2,TantouIndustrialPark, TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Reportnumber:BTF260409R01201 Teststandards:47CFRPart15.247 Testconclusion:Pass Dateofsamplereceipt:2026-04-09 Testdate:2026-04-09to2026-04-15 Dateofissue:2026-04-16 Testby: Vivi.Yan/Tester Preparedby:Approvedby: ChrisLiu/Project engineer Ryan.CJ/EMCManager Note:Allthetestresultsinthisreportonlyrelatedtothetestingsamples.Whichcanbeduplicatedcompletelyforthelegalusewithapprovalof applicant;itshallnotbereproducedexceptinfullwithoutthewrittenapprovalofBTFTestingLab(Shenzhen)Co.,Ltd.,Alltheobjectionsshouldbe raisedwithinthirtydaysfromthedateofissue.Tovalidatethereport,youcancontactus. ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page2of40 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-0755-23146130http://www.btf-lab.comVersion:1/00 RevisionHistory VersionIssueDateRevisionsContent R_V02026-04-16Original Note: Oncetherevisionhasbeenmade,thenpreviousversionsreportsareinvalid. ReportNumber:BTF260409R01201 TotalorpartialreproductionofthisdocumentwithoutpermissionoftheLaboratoryisnotallowed.Page3of40 BTFTestingLab(Shenzhen)Co.,Ltd. Plant101,201and301,Building1,Block2,TantouIndustrialPark,TantouCommunity,SonggangStreet,Bao'anDistrict,Shenzhen, Guangdong,China Email:[email protected]:+86-0755-23146130http://www.btf-lab.comVersion:1/00 TableofContents 1Introduction.........................................................................................................................................................4 1.1LaboratoryLocation....................................................................................................................................4 1.2LaboratoryFacility......................................................................................................................................4 1.3Announcement............................................................................................................................................4 2ProductInformation............................................................................................................................................5 2.1ApplicationInformation...............................................................................................................................5 2.2ManufacturerInformation...........................................................................................................................5 2.3FactoryInformation.....................................................................................................................................5 2.4GeneralDescriptionofEquipmentunderTest(EUT).................................................................................5 2.5TechnicalInformation..................................................................................................................................6 3SummaryofTestResults...................................................................................................................................7 3.1TestStandards............................................................................................................................................7 3.2UncertaintyofTest......................................................................................................................................7 3.3SummaryofTestResult..............................................................................................................................7 3.4Additionsto,deviations,orexclusionsfromthemethod............................................................................8 4TestConfiguration..............................................................................................................................................9 4.1TestEquipmentList....................................................................................................................................9 4.2TestAuxiliaryEquipment..........................................................................................................................10 4.3TestModes...............................................................................................................................................10 4.4TestChannelofEUT.................................................................................................................................11 4.5Testsoftware.............................................................................................................................................11 5RadioSpectrumMatterTestResults(RF)......................................................................................................12 5.1ConductedEmissionatACpowerline.............…

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