2BB3B-HDQ4TWSVivitar TWS Headphones

U.S. Agent Designationfor Serviceof Process (Applicantand U.S. Agent are SeparateParties) TO:FederalCommunicationsCommission 7435 OaklandMills Road Columbia,MD 21046 ATTENTION:FCC Certification– Section2.911(d)(7)Information DesignatedU.S. Agent CompanyName:Sakar InternationalInc Address:195 Carter Drive.Edison,NJ08817 FRN:0028102671 FRN: 0028102671 ContactName: Sakar InternationalInc Tel.: 8006371090 Email:[email protected] This letter is to confirmthat we (“the DesignatedU.S. Agent)have acceptedthe responsibilityto act as the DesignatedU.S. Agent for Serviceof Processas requiredby section47 CFR 2.911(d)(7)on behalf of the Applicantnoted below. U.S. Agent Signature: Date: Signedby (PrintedName/Title): The Applicantacknowledgesthat they must maintainan agent for no less than one year after terminatingall marketingand importationOR the conclusionof any Commission-relatedproceedinginvolvingthe equipment.The applicantfurtheracknowledgestheir responsibilityto informthe FCC wheneverthe DesignatedU.S. Agent informationabove changes. Applicant Companyname:SHENZHENJUNYEELECTRONICSCO LTD GranteeCode:2BB3B FCC ID:2BB3B-HDQ4TWS ContactName:Yin jun Street Address:201,Building7,Xingyeer Road,FenghuangVillage,FuyongTown,BaoanDistrict,Shenzhen City,GuangdongProvince,China TelephoneNo: +86(0755)2372 9964 Email:[email protected] FRN:0033999129 ApplicantSignature: Date: 2026/07/07 Signedby (PrintedName/Title):Yin jun /Manager

SHENZHEN JUNYE ELECTRONICS CO LTD 2026/07/07 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for 2BB3B-HDQ4TWS [SHENZHEN JUNYE ELECTRONICS CO LTD] (“the applicant”) certifies 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, Client’s signature: Client’s name / title : Yin jun / Manager Contact information / address: 201,Building 7,Xingye er Road,Fenghuang Village, Fuyong Town,Baoan District,Shenzhen City,Guangdong Province,China SHENZHEN JUNYE ELECTRONICS CO LTD 2026/07/07 Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for 2BB3B-HDQ4TWS [SHENZHEN JUNYE ELECTRONICS CO LTD] (“the applicant”) certifies 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. Sincerely, Client’s signature: Client’s name / title : Yin jun / Manager Contact information / address: 201,Building 7,Xingye er Road,Fenghuang Village, Fuyong Town,Baoan District,Shenzhen City,Guangdong Province,China

Declarationon modeldifference We the undersignedherebyconfirmthat any of our productionunits bearingthe followingmodel numbersare identicalin circuitryand electrical,mechanicaland physicalconstruction;The differenceslie in the exteriorshapeof the chargingcase, the modelname,and the color. ProductionnameTradenameModelno. VivitarTWS Headphones N/A Y138,Y145,Y146,Y147,Y148,HDQ4TWS- YET,HDQ4TWS-NRW,HDQ4TWS- PNG,HDQ4TWS-SKI,HDQ4TWS-SNT Confirmedby:SHENZHENJUNYEELECTRONICSCO LTD Signature: Date:202 6/07/07 Name:Yin jun Title: Company:SHENZHENJUNYEELECTRONICSCO LTD

SHENZHENJUNYEELECTRONICSCO LTD 2026/07/07 EurofinsElectricaland ElectronicTestingNA, Inc. 914 W. PatapscoAvenue Baltimore,MD 21230 USA RE: CONFIDENTIALITYREQUESTFOR ProductName:VivitarTWS Headphones FCC ID :2BB3B-HDQ4TWS Model(s):Y138,Y145,Y146,Y147,Y148,HDQ4TWS-YET,HDQ4TWS-NRW,HDQ4TWS- PNG,HDQ4TWS-SKI,HDQ4TWS-SNT To WhomIt May Concern: This letter serves as an officialrequestfor confidentialityunder sections0.457 and 0.459 of CFR 47. We have requestedthat the - Block Diagram - Schematics - OperationalDescription requiredto be submittedwith this applicationbe permanently withheldfrom public review. The above materialscontaintrade secretsand proprietaryinformationnot customarily releasedto the public.The publicdisclosureof these materialsmay be harmfulto the applicantand provideunjustifiedbenefitsto its competitors. Please contactme if there is any informationyou may need. Sincerely, Client ’s signature: Client’s name/ title: Yinjun/ Manager Contactinformation/ address:201,Building7,Xingyeer Road,FenghuangVillage,Fuyong Town,BaoanDistrict,ShenzhenCity,GuangdongProvince,China

SHENZHENJUNYEELECTRONICSCO LTD 2026/07/07 EurofinsElectricaland ElectronicTestingNA, Inc. 914 W. PatapscoAvenue Baltimore,MD 21230 USA RE: LETTEROF AGENTAUTHORIZATION ProductName:VivitarTWS Headphones FCC ID :2BB3B-HDQ4TWS Model(s):Y138,Y145,Y146,Y147,Y148,HDQ4TWS-YET,HDQ4TWS-NRW,HDQ4TWS- PNG,HDQ4TWS-SKI,HDQ4TWS-SNT To WhomIt May Concern: We, the undersigned,herebyauthorizeShenzhenBCTCTechnologyCo., Ltd.to act on our behalf in all mattersrelatingto applicationfor equipmentauthorization,includingthe signingof all documentsrelatingto these matters. We also herebycertify that no party to the applicationauthorizedhereunderis subjectto the denial of benefits,includingFCC benefits,pursuantto Section5301 of the Anti-DrugAbuse Act of 1988, 21 U.S.C.853(a). This agreementexpiresone year from the currentdate. Sincerely, Client ’s signature: Client’s name/ title: Yinjun/ Manager Contactinformation/ address:201,Building7,Xingyeer Road,FenghuangVillage,Fuyong Town,BaoanDistrict,ShenzhenCity,GuangdongProvince,China

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FCC ID: 2BB3B-HDQ4TWS Portable device According to § 15.247(i) and § 1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] * [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where f(GHz) is the RF channel transmit frequency in GHz； Power and distance are rounded to the nearest mW and mm before calculation； The result is rounded to one decimal place for comparison； The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 100 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. We use 5mm as separation distance to calculate. Maximum measured transmitter power: BT Channel Freq. (MHz) Max Transmit Power (dBm) Max tune-up power (dBm) Result calculation 1-g SAR GFSK 2402 1.97 2 0.491 3.0 2441 2.1 3 0.623 3.0 2480 2.17 3 0.628 3.0 pi/4-DQPSK 2402 2.8 3 0.612 3.0 2441 2.94 3 0.623 3.0 2480 3.05 4 0.791 3.0 8DPSK 2402 3.39 4 0.779 3.0 2441 3.54 4 0.785 3.0 2480 3.62 4 0.791 3.0 Conclusion: For the max result : 0.791≤ 3.0 for 1-g SAR extremity SAR, No SAR is required.

2.4GHz2012ChipAntenna:RANT0805F245S5 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT0805F245S5 (A)(B)(C)(D)(E)(F) ElectricalSpecification DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 1.6x0.8mm( ± 0.1mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=5 WorkingFrequencyRange2400~2500MHz Bandwidth120MHz(Min.) PeakGain2.7dBi(Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature(°C)-40~85°C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) Dimension(mm) L 2.00±0.10 W 1.20±0.10 T 0.45±0.10 咏成國際科技有限公司 電話 :13530576606 RAINInternationalTechnologyCo.,Ltd. TEL:13530576606 2.4GHz2012ChipAntenna:RANT0805F245S5 _ 1 EvaluationBoardReference PCBDimensionUnit:mm ReturnLoss&Radiation 0805footprint (ANT) 0805footprint (ANT) 0805footprint (ANT) 0805footprint (ANT) 0805footprint (ANT) 0805footprint (ANT) 0805footprint (ANT) 0805footprint (ANT) 2.4GHz2012ChipAntenna:RANT0805F245S5 _ 2.4GHz2012ChipAntenna:RANT0805F245S5 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 16087”4K/Reel 4.0±0.5 4.0±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType1608 1.90±0.203.50±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.10 1.50±0.10 4.0±0.1 2.4GHz2012ChipAntenna:RANT0805F245S5 _ ReliabilityTable TestItemProcedure Requirements CeramicType Remark (Reference) Electrical Characterization Fulfilltheelectrical specification UserSpec. Thermal Shock 1.Preconditioning: 50±10°C/1hr,thenkeepfor24±1hrsatroomtemp. 2.Initialmeasure:Spec:referInitialspec. 3.Rapidchangeoftemperaturetest: -30°Cto+85°C;100cycles; 15minutesatLowercategorytemperature; 15minutesatUppercategorytemperature. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 107 Temperature Cycling 1.Initialmeasure:Spec:referInitialspec. 2.100Cycles(-30°Cto+85°C),SoakMode=1(2Cycle/hours). 3.Measurementat24±2Hoursaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. JESD22 JA104 HighTemperature Exposure 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered;500hours@T=+85°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 LowTemperature Storage 1.Initialmeasure:Spec:referInitialspec. 2.Unpowered:500hours@T=-30°C. 3.Measurementat24±2hoursaftertest. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 108 Solderability (SMDBottomSide) Dippingmethod: a.Temperature:235±5°C b.Dippingtime:3±0.5s Thesoldershouldcover over95%ofthecritical areaofbottomside. IEC60384-21/22 4.10 SolderingHeat Resistance (RSH) Preheatingtemperature:150±10°C. Preheatingtime:1~2min. Soldertemperature:260±5°C. Dippingtime:5±0.5s NoVisibleDamage.IEC60384-21/22 4.10 Vibration5g'sfor20min.,12cycleseachof3orientations Note:Use8"X5"PCB.031"thick7securepointson,onelong sideand2securepointsatcornersofoppositesides.Parts mountedwithin2"fromanysecurepoint.Testfrom10-2000 Hz. NoVisibleDamage.MIL-STD-202 Method204 Mechanical Shock Threeshocksineachdirectionshallbeappliedalongthethree mutuallyperpendicularaxesofthetestspecimen(18shocks) Peakvalue:1,500g’s Duration:0.5ms Velocitychange:15.4ft/s Waveform:Half-sine NoVisibleDamage.MIL-STD-202 Method213 Humidity Bias 1.Humidity:85%R.H.,Temperature:85±2°C. 2.Time:500±24hours. 3.Measurementat24±2hrsaftertestcondition. NoVisibleDamage. Fulfilltheelectrical specification. MIL-STD-202 Method106 2.4GHz2012ChipAntenna:RANT0805F245S5 _ Board Flex (SMD) 1.Mountingmethod: IR-Reflow.PCBSize(L:100×W:40×T:1.6mm) 2.Applytheloadindirectionofthearrowuntilbendingreaches 2mm. NoVisibleDamage.AEC-Q200 005 AdhesionForceof1.8Kgfor60seconds.NoVisibleDamage Magnificationof20Xor greatermaybeemployed forinspectionofthe mechanicalintegrityofthe devicebodyterminalsand body/terminaljunction. AEC-Q200 006 Physical Dimension Anyapplicablemethodusingx10magnification,micrometers, calipers,gauges,contourprojectors,orothermeasuring equipment,capableofdeterminingtheactualspecimen dimensions. Inaccordancewith specification. JESD22 JB100 RevisionHistory RevisionDateContent 12019/03/01NewDatasheet 22020/02/22Add2Dradiationcharacteristic

No.：BCTC/KJ-RF-ICT-001 Page 1 of 83 Edition：B.1 TEST REPORT Shenzhen BCTC Technology Co., Ltd. Report No.: BCTC2606534141E Applicant: SHENZHEN JUNYE ELECTRONICS CO LTD Product Name: Vivitar TWS Headphones Test Model: Y138 Tested Date: 2026-06-16 to 2026-06-30 Issued Date: 2026-07-07 Report No.: BCTC2606534141E No.：BCTC/KJ-RF-ICT-001 Page 2 of 83 Edition：B.1 FCC ID: 2BB3B-HDQ4TWS The test report is effective only with both signature and specialized stamp.This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen BCTC Technology Co., Ltd, this report can’t be reproduced except in full.The tested sample(s) and the sample information are provided by the client. Product Name: Vivitar TWS Headphones Trademark: NA Model/Type Reference: Y138,Y145,Y146,Y147,Y148,HDQ4TWS-YET,HDQ4TWS-NRW,HDQ4TWS-PN G,HDQ4TWS-SKI,HDQ4TWS-SNT Prepared For: SHENZHEN JUNYE ELECTRONICS CO LTD Address: 201,Building 7,Xingye er Road,Fenghuang Village, Fuyong Town,Baoan District, Shenzhen City,Guangdong Province,China Manufacturer: SHENZHEN JUNYE ELECTRONICS CO LTD Address: 201,Building 7,Xingye er Road,Fenghuang Village, Fuyong Town,Baoan District, Shenzhen City,Guangdong Province,China Prepared By: Shenzhen BCTC Technology Co., Ltd. Address: Room 101M, Unit 1, Building1, Pengyuan, No.18, Lilang Road, Shanglilang, Nanwan Subdistrict, Longgang District, Shenzhen, Guangdong, China. Sample Received Date: 2026-06-16 Sample Tested Date: 2026-06-16 to 2026-06-30 Report No.: BCTC2606534141E Test Standards FCC Part15.247 ANSI C63.10-2020 Test Results PASS Remark: This is Bluetooth Classic radio test report. Prepared by : Reviewer by : Approved by: Mike Zheng Louis Zeng Sewen Guo Report No.: BCTC2606534141E No.：BCTC/KJ-RF-ICT-001 Page 3 of 83 Edition：B.1 Table of Content Test Report Declaration Page 1. Version .................................................................................................................. 5 2. Test Summary ....................................................................................................... 6 3. Measurement Uncertainty ..................................................................................... 7 4. Product Information and Test Setup ...................................................................... 8 4.1 Product Information ............................................................................................... 8 4.2 Test Setup Configuration ...................................................................................... 9 4.3 Support Equipment ............................................................................................... 9 4.4 Channel List ........................................................................................................ 10 4.5 Test Mode ........................................................................................................... 10 4.6 Table Of Parameters Of Text Software Setting ................................................... 11 5. Test Facility And Test Instrument Used ............................................................... 12 5.1 Test Facility ......................................................................................................... 12 5.2 Test Instrument Used .......................................................................................... 12 6. Conducted Emissions .......................................................................................... 15 6.1 Block Diagram Of Test Setup .............................................................................. 15 6.2 Limit .................................................................................................................... 15 6.3 Test procedure .................................................................................................... 15 6.4 EUT operating Conditions ................................................................................... 15 6.5 Test Result .......................................................................................................... 16 7. Radiated emissions ............................................................................................. 18 7.1 Block Diagram Of Test Setup .............................................................................. 18 7.2 Limit .................................................................................................................... 19 7.3 Test procedure .................................................................................................... 20 7.4 EUT operating Conditions ................................................................................... 21 7.5 Test Result .......................................................................................................... 22 8. Radiated Band Emission Measurement and Restricted Bands of Operation ...... 28 8.1 Block Diagram Of Test Setup .............................................................................. 28 8.2 Limit .................................................................................................................... 28 8.3 Test procedure .................................................................................................... 29 8.4 EUT operating Conditions ................................................................................... 29 8.5 Test Result .......................................................................................................... 30 9. Spurious RF Conducted Emissions ..................................................................... 31 9.1 Block Diagram Of Test Setup .............................................................................. 31 9.2 Limit .................................................................................................................... 31 9.3 Test procedure .................................................................................................... 3…

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TEST SETUP PHOTOGRAPHS 1.1. Photos of Radiation Emission Measurement Conducted Emission Measurement Photos Radiated Measurement Photos ----------------The end----------------