2A8K3-TS-L1Roller Wireless Earphone

ShantouTengShenElectronicsCo.,Ltd. 2.911(d)(5)(i)EquipmentTypeAttestationv1.2 Section2.911(d)(5)(i)Certification–EquipmentType Companyname:ShantouTengShenElectronicsCo.,Ltd. Address:Room1,Unit502,NO.63,ZhuChiRoad,LonghuDistrict,Shantou,China ProductName:RollerWirelessEarphone FCCID:2A8K3-TS-L1 Model(s):TS-L1,TS-L2,TS-L3 2.911(d)(5)(i)EquipmentType We,[ShantouTengShenElectronicsCo.,Ltd.](“theapplicant”)certifythattheequipmentforwhich authorizationissoughtthroughcertificationisnot: Prohibitedfromreceivinganequipmentauthorizationpursuantto§2.903;oftheFCCrules. Identifiedasanequipmenttypeinthe“CoveredList” NOTE1 Yourssincerely, Name:AsherXuDate:5/27/2026 TitleandCompanyname:Manager/ShantouTengShenElectronicsCo.,Ltd. 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

ShantouTengShenElectronicsCo.,Ltd. 2.911(d)(5)(ii)ApplicantAttestationv1.3 Section2.911(d)(5)(ii)Certification–Applicant(CoveredList) Companyname:ShantouTengShenElectronicsCo.,Ltd. Address:Room1,Unit502,NO.63,ZhuChiRoad,LonghuDistrict,Shantou,China ProductName:RollerWirelessEarphone FCCID:2A8K3-TS-L1 Model(s):TS-L1,TS-L2,TS-L3 2.911(d)(5)(ii)Applicantfiling We,[ShantouTengShenElectronicsCo.,Ltd.](“theapplicant”)certifythat,asofthedateofthefiling oftheapplication,theapplicantisnotidentified NOTE1 onthe“CoveredList” NOTE2 ,established pursuantto§1.50002ofthischapter,asanentityproducingcoveredcommunicationsequipment. Yourssincerely, Name:AsherXuDate:5/27/2026 TitleandCompanyname:Manager/ShantouTengShenElectronicsCo.,Ltd. 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

Shantou TengShen Electronics Co.,Ltd. Room1,Unit502,NO.63,ZhuChi Road,Longhu District Shantou China Date: 2026-05-26 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A8K3-TS-L1 FRN: 0032843989 US Agent – Attestation Statement / Part 2.911(d)(7) Shantou TengShen Electronics Co.,Ltd. certifies, that as of 2026-05-26, we have designated Mars Business Consulting, LLC to accept service of process on our behalf for FCC ID: 2A8K3- TS-L1 Shantou TengShen Electronics Co.,Ltd. accepts to maintain an agent of service of process in the United States for no less than one year after either the grantee has permanently terminated all marketing and importation of the applicable equipment within the U.S., or the conclusion of any Commission-related administrative or judicial proceeding involving the equipment, whichever is later. Mars Business Consulting, LLC, accepts as of the date of the filing of this application, the obligation of being the designated agent for the purpose of accepting service of process on behalf of Shantou TengShen Electronics Co.,Ltd. for FCC ID: 2A8K3-TS-L1 Designated Agent Information: Company Name: Mars Business Consulting, LLC FRN: 0033790684 Address: 8932 Mission Dr, Unit 207, Rosemead, California 91770, United States Contact Person: Jessie Peng Phone: + 1 818-579-7288 Email: [email protected] Sincerely, Company:ShantouTengShenElectronics Co.,Ltd. CompanyRepresentative:AsherXu Signature: Designated Agent: Mars Business Consulting, LLC Designated Agent Representative: Jessie Peng Signature:

Shantou TengShen Electronics Co.,Ltd. Family models difference declaration Product Name: Roller Wireless Earphone Trade Name: N/A Model Name: TS-L1 Family Model: TS-L2, TS-L3 Difference declaration: We (Shantou TengShen Electronics Co.,Ltd.) hereby state that all the models are electrical identical including the same software parameter and hardware design (i.e., circuit design, PCB Layout, RF module/circuit, antenna type(s) and antenna location, components on PCB, etc.), same mechanical structure and design (including product enclosure, materials, etc.), the only difference is the model names, model colors and Housing shape. Regards, Signature Name: Asher Xu Date: 6/9/2026 Shantou TengShen Electronics Co.,Ltd. The specific differences are shown in the table. Model name Model colors Housing shape TS-L1 Bright color Matte color TS-L2 Bright color Matte color TS-L3 Bright color Matte color

ShantouTengShenElectronicsCo.,Ltd. LetterofAuthorization Company:ShantouTengShenElectronicsCo.,Ltd. Address:Room1,Unit502,NO.63,ZhuChiRoad,LonghuDistrict,Shantou,China ProductName:RollerWirelessEarphone ModelNumber(s):TS-L1,TS-L2,TS-L3 ProductDescription:RollerWirelessEarphone WeauthorizeMiCOMLabsInc.,575BoulderCourt,Pleasanton,California94566,USA, toactonourbehalfonallmattersconcerningthecertificationofabovenamed equipment. WedeclarethatMiCOMLabsInc.isallowedtoforwardallinformationrelatedtothe approvalandcertificationofequipmenttotheregulatoryagenciesasrequiredandto discussanyissuesconcerningtheapprovalapplication.Anyandallactscarriedoutby MiCOMLabsonourbehalfshallhavethesameeffectasactsofourown. Signature:Date:2026/5/26 Name:AsherXu Title:Manager Company:ShantouTengShenElectronicsCo.,Ltd.

ShantouTengShenElectronicsCo.,Ltd. OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USA Date:5/27/2026 Subject;RequestforConfidentiality FCCID:2A8K3-TS-L1 ToWhomItMayConcern, PursuanttotheprovisionsoftheCommission’srulesTitle47Sections§0.457and§0.459,we arerequestingtheCommissiontowithholdthefollowingattachment(s)asconfidential documentsfrompublicdisclosureindefinitely. Thesedocumentscontaindetailedsystemandequipmentdescriptionsandareconsideredas proprietaryinformationinoperationoftheequipment.Thepublicdisclosureofthesedocuments mightbeharmfultoourcompanyandwouldgivecompetitorsanunfairadvantageinthemarket. SchematicDiagram BOMList BlockDiagram OperationalDescription Inadditionaltoabovementioneddocuments,inordertocomplywiththemarketingregulations inTitle47CFR§2.803andtheimportationrulesinTitle47CFR§2.1204,whileensuringthat businesssensitiveinformationremainsconfidentialuntiltheactualmarketingofnewly authorizeddevices,werequestShortTermConfidentialityofthefollowingattachment(s); ExternalPhotos TestSetupPhotos InternalPhotos UserManual For45days,pursuanttoPublicNoticeDA04-1705. OR For180dayspursuanttoKDB726920D01. Itisourunderstandingthatallmeasurementtestreports,FCCIDlabelformatand correspondenceduringthecertificationreviewprocesscannotbegrantedasconfidential documentsandthisinformationwillbeavailableforpublicreviewoncethegrantofequipment authorizationisissued. Sincerely, Signature: Name:AsherXu Title:Manager

FCC ID: 2A8K3-TS-L1 Portable device According to 47 CFR, Part2.1093 and 47 CFR, Part1.1307, 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 SAR 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 When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculation SAR Exclusion threshold SAR test exclusion 2.402 -4.18 0.38 -5±1 -4 0.40 <5 0.12340 3.00 YES 2.441 -3.47 0.45 -4±1 -3 0.50 <5 0.15661 3.00 YES 2.480 -2.83 0.52 -3±1 -2 0.63 <5 0.19873 3.00 YES 2.402 -3.34 0.46 -4±1 -3 0.50 <5 0.15535 3.00 YES 2.441 -2.58 0.55 -3±1 -2 0.63 <5 0.19716 3.00 YES 2.480 -1.96 0.64 -2±1 -1 0.79 <5 0.25018 3.00 YES 2.402 1.00 <5 0.30997 3.00 YES 2.441 1.00 <5 0.31247 3.00 YES 2.480 1.00 <5 0.31496 3.00 YES GFSK π/4-DQPSK 8-DPSK Conclusion: For the max result: 0.25 ≤ 3 for 1g SAR, SAR is not required. Signature: Date: 2026-05-15 NAME AND TITLE (Please print or type): Alex Li/Manager COMPANY (Please print or type): Shenzhen NTEK Testing Technology Co., Ltd./ No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China

Ante nna descr ibe annetnaBCPetalpannetnA TNAG4.2emaNledoM CenterFrequency lacitreVlatnoziroH 2400MHz2450MHz2500MHz2400MHz2450MHz2500MHz -1.26-0.76-0.58-5.25-2.46-1.86 MAX.Gain-0.58dB lacitreVdnalatnoziroHnoitaziraloP lanoitcerid-inmOnrettaPmaeBhtumizA mhO05ecnadepmI mm02.83htgneLannetnA Shenzhen Shenhongsheng Circuit Board Co., Ltd. 1st Floor, Building 3, Keyuan Industrial Park, Xingguang Village, Huangjiang Town, Dongguan City, Guangdong Province re Address rutcafunam Ant enna Photo & Le ngth(mm) Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Frequency (MHz) Gain(dB) MaxMinAvg 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 Frequency (MHz) Gain(dB) MaxMinAvg 2400-5.2537-22.1424 -12.4294 2450-2.4652-24.5837 -10.4702 2500-1.86120 -29.5214 -9.20432

Report No.: N26042801002E Version.1.3 Page 1 of 89 RADIO TEST REPORT FCC ID: 2A8K3-TS-L1 Product: Roller Wireless Earphone Trade Mark: N/A Model No.: TS-L1 Family Model: TS-L2, TS-L3 Report No.: N26042801002E Issue Date: May. 15, 2026 Prepared for Shantou TengShen Electronics Co.,Ltd. Room1,Unit502,NO.63,ZhuChi Road,Longhu District,Shantou,China Prepared by Shenzhen NTEK Testing Technology Co., Ltd. No. 24 Xinfa East Road, Xiangshan Community, Xinqiao Street, Baoan District, Shenzhen, Guangdong, People's Republic of China Tel. 0755-23200050 Website: http://www.ntek.org.cn Report No.: N26042801002E Version.1.3 Page 2 of 89 TABLE OF CONTENTS 1 TEST RESULT CERTIFICATION ...................................................................................................................... 3 2 SUMMARY OF TEST RESULTS ......................................................................................................................... 4 3 FACILITIES AND ACCREDITATIONS ............................................................................................................. 5 3.1 FACILITIES..................................................................................................................................................... 5 3.2 LABORATORY ACCREDITATIONS AND LISTINGS ................................................................................. 5 3.3 MEASUREMENT UNCERTAINTY ............................................................................................................... 5 4 GENERAL DESCRIPTION OF EUT .................................................................................................................. 6 5 DESCRIPTION OF TEST MODES ..................................................................................................................... 8 6 SETUP OF EQUIPMENT UNDER TEST ........................................................................................................... 9 6.1 BLOCK DIAGRAM CONFIGURATION OF TEST SYSTEM ....................................................................... 9 6.2 SUPPORT EQUIPMENT ............................................................................................................................... 10 6.3 EQUIPMENTS LIST FOR ALL TEST ITEMS .............................................................................................. 11 7 TEST REQUIREMENTS .................................................................................................................................... 13 7.1 CONDUCTED EMISSIONS TEST ............................................................................................................... 13 7.2 RADIATED SPURIOUS EMISSION ............................................................................................................ 16 7.3 NUMBER OF HOPPING CHANNEL ........................................................................................................... 38 7.4 HOPPING CHANNEL SEPARATION MEASUREMENT ........................................................................... 39 7.5 AVERAGE TIME OF OCCUPANCY (DWELL TIME) ................................................................................ 40 7.6 20DB BANDWIDTH TEST .......................................................................................................................... 42 7.7 PEAK OUTPUT POWER .............................................................................................................................. 43 7.8 CONDUCTED BAND EDGE MEASUREMENT......................................................................................... 44 7.9 SPURIOUS RF CONDUCTED EMISSION .................................................................................................. 45 7.10 ANTENNA APPLICATION .......................................................................................................................... 46 7.11 FREQUENCY HOPPING SYSTEM (FHSS) EQUIPMENT REQUIREMENTS ......................................... 47 8 TEST RESULTS ................................................................................................................................................... 48 8.1 DWELL TIME .......................................................................................................................................................... 48 8.2 MAXIMUM CONDUCTED OUTPUT POWER .............................................................................................................. 55 8.3 -20DB BANDWIDTH ............................................................................................................................................... 59 8.4 OCCUPIED CHANNEL BANDWIDTH ........................................................................................................................ 63 8.5 CARRIER FREQUENCIES SEPARATION ..................................................................................................................... 67 8.6 NUMBER OF HOPPING CHANNEL ........................................................................................................................... 71 8.7 BAND EDGE ........................................................................................................................................................... 73 8.8 BAND EDGE(HOPPING) .......................................................................................................................................... 78 8.9 CONDUCTED RF SPURIOUS EMISSION ................................................................................................................... 83 Report No.: N26042801002E Version.1.3 Page 3 of 89 1 TEST RESULT CERTIFICATION Applicant’s name ........................ : Shantou TengShen Electronics Co.,Ltd. Address ....................................... : Room1,Unit502,NO.63,ZhuChi Road,Longhu District,Shantou,China Manufacturer's Name ................. : Shantou TengShen Electronics Co.,Ltd. Addre…

Text truncated - open the document above for the full version.