2BVAO-TWSAK11True Wireless Earphones

True Wireless Earphones Model No:SLEVE PURE X FCCCaution: Thisdevicecomplieswithpart15oftheFCCRules.Operationissubjecttothe followingtwoconditions:(1)Thisdevicemaynotcauseharmfulinterference, and(2)thisdevicemustacceptanyinterferencereceived,including interferencethatmaycauseundesiredoperation. Anychangesormodificationsnotexpresslyapprovedbythepartyresponsible forcompliancecouldvoidtheuser'sauthoritytooperatetheequipment. NOTE:Thisequipmenthasbeentestedandfoundtocomplywiththelimitsfor aClassBdigitaldevice,pursuanttoPart15oftheFCCRules.Theselimitsare designedtoprovidereasonableprotectionagainstharmfulinterferenceina residentialinstallation.Thisequipmentgenerates,usesandcanradiateradio frequencyenergyand,ifnotinstalledandusedinaccordancewiththe instructions,maycauseharmfulinterferencetoradiocommunications. However,thereisnoguaranteethatinterferencewillnotoccurinaparticular installation. Ifthisequipmentdoescauseharmfulinterferencetoradioortelevision reception, whichcanbedeterminedbyturningtheequipmentoffandon,theuseris encouragedtotrytocorrecttheinterferencebyoneormoreofthefollowing measures: --Reorientorrelocatethereceivingantenna. --Increasetheseparationbetweentheequipmentandreceiver. --Connecttheequipmentintoanoutletonacircuitdifferent fromthattowhichthereceiverisconnected. --Consultthedealeroranexperiencedradio/TVtechnicianforhelp. ThedevicehasbeenevaluatedtomeetgeneralRFexposurerequirement. Thedevicecanbeusedinportableexposureconditionwithoutrestriction.

LocalRepresentativeLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(7),oftheCommission’sRules(47C.F.R.)weattestasfollowsfor theproductlistedbelow: FCCIDModelname 2BVAO-TWSAK11SLEVEPUREX,AK11,PM-1125 Weherebyacknowledgeasfollows: i.bothsigneesconfirmthatthepointofcontactacceptsresponsibilitytoactasaUS- AmericanRepresentativeonbehalfoftheapplicant ii.thepointofcontactprovidesthephysicalU.S.addressandemailaslistedbelow iii.bothpartiesmaintaintherequirementsofthisagreementwithoutexpirationdate US-AmericanPointofContactApplicant/ApprovalHolder SignatureSignature CompanyName:LOBOSIOWAINCShantouLingyinTechnologyCo., Ltd FRN:00364139610038181103 ContactName:HarleyLiXiaochunWu Address:4623BittercreekDrColorado SpringsCO80922US DongxingIndustrialZone,Guorao Town,ChaoyangDistrict, ShantouCity,China Phone:+18188180538-- Email:[email protected]@yueyinda.com

CoveredEquipmentAttestationLetter ForCertificationServiceintheUSA FederalCommunicationsCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoSection2.911(d)(5)(i)-(ii)oftheCommission’sRules(47C.F.R.)weattestas followsfortheproductlistedbelow: FCCIDModelname 2BVAO-TWSAK11SLEVEPUREX,AK11,PM-1125 We, Applicant CompanyName:ShantouLingyinTechnologyCo.,Ltd Address:DongxingIndustrialZone,GuoraoTown, ChaoyangDistrict,ShantouCity,China Phone:N/A certifythattheequipmentforwhichauthorizationissoughtisnot“covered”equipment prohibitedfromreceivinganequipmentauthorizationpursuanttosection2.903oftheFCC rules.Thisincludesthecybersecurityandanti-virussoftwareproducedorprovidedby KasperskyLab,Inc.oranyofistsuccessorsandassignees. Wecertifythat,asofthedateofthefilingoftheapplication,theapplicantisnotidentified ontheCoveredListasanentityproducing“covered”equipment. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2026-3-27 SignatureDate PrintedNameofSignee:XiaochunWu Company:ShantouLingyinTechnologyCo., Ltd Phone:18576721496 Email:[email protected] Address:DongxingIndustrialZone,Guorao Town,ChaoyangDistrict,ShantouCity, China Fax:N/A

ShantouLingyinTechnologyCo.,Ltd DongxingIndustrialZone,GuoraoTown,ChaoyangDistrict,ShantouCity,China Date:2026-3-27 FCCID:2BVAO-TWSAK11 ModelNumber:SLEVEPUREX,AK11,PM-1125 To:FederalCommunicationCommission AuthorizationandEvaluationDivision7435OaklandMillsRoad Columbia,MD21048 ToWhomItMayConcern, We,ShantouLingyinTechnologyCo.,Ltdherebydeclarethatourproduct(TrueWireless Earphones ) ModelNumber: SLEVEPUREX,AK11,PM-1125 electricalidentical,the Schematic,PCBlayout,structureandsoftwarearesame,onlythedifferenceisthemodel nameformarketpurpose. Shouldyouhaveanyquestionsorcommentsregardingthismatter,pleasehave mybestattention. Sincerely, (Signed) Name/Title:XiaochunWu/Manager Company:ShantouLingyinTechnologyCo.,Ltd Address:DongxingIndustrialZone,GuoraoTown,ChaoyangDistrict,ShantouCity, China Phone:18576721496 FaxNumber:N/A E-Mail:[email protected]

ConfidentialityRequestLetter ForCertificationServiceintheUSA FederalCommunicationCommission EquipmentAuthorizationDivision,ApplicationProcessingBranch 7435OaklandMillsRoad Columbia,MD21048 Towhomitmayconcern PursuanttoParagraphs§0.457and0.459oftheCommission’sRules(47C.F.R.)andSection §552(b)(4)oftheFreedomofInformationAct,werequestconfidentialityforthe documentationofthefollowingproducts: FCCIDModelname 2BVAO-TWSAK11SLEVEPUREX,AK11,PM-1125 Fortheproductslistedabove,werequestpermanentconfidentialityforallapplicable exhibitsasthereare:  theOperationalDescription  theBlockDiagram theSchematics Theabovelistedexhibitscontaintradesecretsandproprietaryinformationthatcouldbeof benefittoourcompetitors. Ifyouhaveanyquestions,pleasefeelfreetocontactusattheaddressshownbelow. Sincerely, 2026-3-27 SignatureDate PrintedNameofSignee/Title:XiaochunWu/Manager Company:ShantouLingyinTechnologyCo.,Ltd Address:DongxingIndustrialZone,GuoraoTown,Chaoyang District,ShantouCity,China Phone:18576721496 Fax:-- Email:[email protected]

ReportNo.:CISRR26031816801 Page 74 of 77 9.EXTERNALANDINTERNALPHOTOS 9.1.ExternalPhotos ReportNo.:CISRR26031816801 Page 75 of 77

Label Size:10mm*4mm FCCID:2BVAO-TWSAK11 LabelLocation

ReportNo.:CISRR26031816801 Page 76 of 77 9.2.InternalPhotos ReportNo.:CISRR26031816801 Page 77 of 77 ------Endofthereport----- ANT

ReportNo.: CISRR26031816802 Reporttemplateversion:CISE-TR-001-A0Page:1of6 TESTREPORT RFExposureEvaluation ReportNo.: CISRR26031816802 ProjectNo.: CISR260318168 FCCID: 2BVAO-TWSAK11 Applicant:ShantouLingyinTechnologyCo.,Ltd Address:DongxingIndustrialZone,GuoraoTown,ChaoyangDistrict,ShantouCity Manufacturer:ShantouChaoyangDistrictGuraoHaiyeElectronicFactory Address: DongxingIndustrialZone,GuoraoTown,ChaoyangDistrict,ShantouCity ProductName: TrueWirelessEarphones TradeMark: - Model/Typereference:SLEVEPUREX ListedModel(s):AK11,PM-1125 Standard:47CFRPart2.1093 Issuedate:March24,2026 Testresult:Complied Reviewedby:MorganTan Approvedby:HansHu Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangceTesting TechnologyCo.,Ltd. ReportNo.: CISRR26031816802 Reporttemplateversion:CISE-TR-001-A0Page:2of6 Contents 1.APPLICABLESTANDARD..............................................................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.RADIOSPECIFICATIONDESCRIPTION........................................................................................................4 4.SIMULTANEOUSTRANSMISSIONANALYSIS.............................................................................................4 5.TESTRESULT.................................................................................................................................................5 5.1.STANDALONETRANSMISSION.................................................................................................................5 5.2.SIMULTANEOUSTRANSMISSION.............................................................................................................6 ReportNo.: CISRR26031816802 Reporttemplateversion:CISE-TR-001-A0Page:3of6 1.APPLICABLESTANDARD 47CFRPart2.1093:Radiofrequencyradiationexposureevaluation:portabledevices ANSIC95.1–2019:IEEEStandardforSafetyLevelswithRespecttoHumanExposuretoRadioFrequency ElectromagneticFields,3kHzto300GHz. FCCKDBpublication447498D01GeneralRFExposureGuidancev06:MobileandPortableDevicesRF ExposureProceduresandEquipmentAuthorizationPolicies. 47CFRPart1.1307:Actionsthatmayhaveasignificantenvironmentaleffect,forwhichEnvironmental Assessments(EAs)mustbeprepared. 2.REPORTVERSION VersionNo.IssuedateDescription 00March24,2026Original ReportNo.: CISRR26031816802 Reporttemplateversion:CISE-TR-001-A0Page:4of6 3.RADIOSPECIFICATIONDESCRIPTION Bluetooth Supportedtype:BREDRLE-1Mbps LE-2Mbps Note:PleaserefertoRFreportfordetailedtechnicalspecifications 4.SIMULTANEOUSTRANSMISSIONANALYSIS ThisBluetoothheadsetconsistsofaleftearpieceandarightearpiece.Thesedevicesuseasingletransmitter moduleandantennaforbothBT,BTcantransmitsimultaneously. ReportNo.: CISRR26031816802 Reporttemplateversion:CISE-TR-001-A0Page:5of6 5.TESTRESULT 5.1.Standalonetransmission Limit: KDB447498D01v06,Clause4.3.1a) For100MHzto6GHzandtestseparationdistances≤50mm,the1-gand10-g SARtestexclusionthresholdsaredeterminedbythefollowing: [(max.powerofchannel,includingtune-uptolerance,mW)/(min.testseparation distance,mm)]*[√f(GHz)]≤3.0for1-gSAR,and≤7.5for10-gextremitySAR,where f(GHz)istheRFchanneltransmitfrequencyinGHz PoweranddistanceareroundedtothenearestmWandmmbeforecalculation31The resultisroundedtoonedecimalplaceforcomparison Thevalues3.0and7.5arereferredtoasnumericthresholdsinstepb)below Thetestexclusionsareapplicableonlywhentheminimumtestseparationdistanceis≤50mm, andfortransmissionfrequenciesbetween100MHzand6GHz.Whentheminimumtest separationdistanceis<5mm,adistanceof5mmaccordingto4.1f)isappliedtodetermine SARtestexclusion. Result: Passed TestData Radiotype Frequency (GHz) Maximum output power #1 (dBm) Antenna gain #2 (dBi) Maximum EIRP #3 (dBm) Maximum tune-up EIRP #4 (dBm) Minimum distance (mm) Evaluated value LimitResult Bluetooth- Left 2.402-0.032.182.153.005.000.61853.00PASS Bluetooth- Right 2.402-0.012.182.173.005.000.61853.00PASS Note #1:ThisvaluecomesfromtheRFtestreport. #2:Thisvalueisdeclaredbytheapplicant. #3:EIRP=Maximumoutputpower+Antennagain. #4:Thisvalueisdeclaredbytheapplicant. ReportNo.: CISRR26031816802 Reporttemplateversion:CISE-TR-001-A0Page:6of6 5.2.Simultaneoustransmission Limit: KDB447498D01v06,Clause4.3.2,47CFRPart1.1307 InthecaseofxedRFsourcesoperatinginthesametime-averagingperiod,orof multiplemobileorportableRFsourceswithinadeviceoperatinginthesametime averagingperiod,ifthesumofthefractionalcontributionstotheapplicablethresholds islessthanorequalto1asindicatedinthefollowingequation. Where a=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(B)ofthissectionforP,includingexistingexempttransmittersandthosebeing added. b=numberoffxed,mobile,orportableRFsourcesclaimingexemptionusingparagraph (b)(3)(i)(C)ofthissectionforThresholdERP,includingexistingexempttransmittersand thosebeingadded. c=numberofexistingfixed,mobile,orportableRFsourceswithknownevaluationforthespeci edminimumdistanceincludingexistingevaluatedtransmitters. P j =theavailablemaximumtime-averagedpowerortheERP,whicheverisgreater,forxed, mobile,orportableRFsourceiatadistancebetween0.5cmand40cm(inclusive). P th,j =theexemptionthresholdpower(P)accordingtoparagraph(b)(3)(i)(B)ofthissectionfor xed,mobile,orportableRFsourcei. ERP j =theERPoffixed,mobile,orportableRFsourcej. ERP th,j =exemptionthresholdERPforfixed,mobile,orportableRFsourcej,atadistanceofat leastλ/2πaccordingtotheapplicableformulaofparagraph(b)(3)(i)(C)ofthissection. Evaluated k =themaximumreportedSARorMPEoffixed,mobile,orportableRFsourcekeither inthedeviceoratthetransmittersitefromanexistingevaluationatthelocationofexposure. ExposureLimit k =eitherthegeneralpopulation/uncontrolledmaximumpermissibleexposure (MPE)orspecicabsorptionrate(SAR)limitforeachxed,mobile,orportableRFsourcek, asapplicablefrom§1.1310ofthischapter. Result:Pas…

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SMD
CERAMIC
ANTENNA
Data
Sheet For 2400-2483MH z 2.0x1.2mm CS -2450-21- B [EIA2012] HZ2012WC01 Manufacturer: Shenzhen Haituo Antenna Technology Co., Ltd. Address: No. 1, Qiaolian West 2nd Lane, Maantang Community, Bantian Street, Longgang District, Shenzhen City 典型特征 T y p i cal Characterist i cs ■ 重量轻，结构紧凑 Light weight, compact ■ 宽带大，低成本 Wide bandwidth, low cost ■ 高增益内置天线 Built-in antenna with high gain ■ 工作温度 Operating Temp. : -40°C~+85°C 电气特性 Electrical Characteristics per line(TA=25°C) 2400~2483 MHz Lin ear dB i 68. 8% % 50 频带 Frequency Band 极 化 P o l a riz a t i o n * 峰 值 增 益 P eak Ga in * 峰 值 效 率 P ea k Effi c i e n c y 阻 抗 Im p e n da n ce 参数Parameter 规格Specification 单位Units 特征 Feature 应用 Application ■ 蓝牙,无线局域网,移动电视 Bluetooth, Wireless LAN, Mobile TV ■ 家用射频系统Home RF system, etc *测 试 条 件 ： 测 试 板 尺 寸 9 8 × 65 mm ； 匹 配 电 路 ： π 型 匹 配 电 路 。 T est co n d i t i o n : T est boa r d s iz e 9 8 * 65 m m ; M a t c hin g c ir cu i t: P i m a t c hin g c ir cu i t w il l be re q u ir ed Fi g .1 驻 波 比 V S WR W Chip Antenna CS-2450-21-B 2.18 3D模式 3D Gain Pattern (2400 MHz) 2D模式 2D Gain Pattern (2400 MHz) 增益模式是在 暗 室 进 行 测 试 的 ， 被 测 件 放 在 桌 肩 位 置 ， 用 标 准 的 喇 叭 天 线 和 矢 量 网 络 分 析 仪 来 收 集 数 据 。 Th e Ga i n p a tt e rn i s measu r ed i n FAR - fi e l d c h a m be r . D U T i s p l aced o n e tab l e o f r o t a t o r , a s t a n da r d ho r n a n t e nn a a n d Vec t o r N e t w o rk t o co ll ect da t a . 辐射模式 Radiation Pattern Fig.2 暗室示意图 FAR-field Chamber Chip Antenna t h An a l y z e r i s uesd 2.17 3D模式 3D Gain Pattern (2450 MHz) 2D模式 2D Gain Pattern (2450 MHz) 3D模式 3D Gain Pattern (2500 MHz) 2D模式 2D Gain Pattern (2500 MHz) Chip Antenna 1. 30±3 minutes at -40°C±5°C, 2. Convert to +105°C (5 minutes) 3. 30±3 minutes at +105°C±5°C, 4. Convert to -40°C (5 minutes) 5. Total 100 continuous cycles 项目Item 环境Condition 规格Specification 热冲击 Thermal shock No apparent damage Fulfill the electrical spec. after test. 抗湿性 Humidity resistance No apparent damage Fulfill the electrical spec. after test. 1. Humidity: 85% R.H. 2. Temperature: 85±5°C 3. Time: 1000 hours. The dipped surface of the terminal shall be at least 95% covered with solder after dipped in solder bath of 245±5°C for 3±1 seconds. No apparent damage 焊锡性 Solderability 耐焊接热性 Soldering heat resistance No apparent damage 1. Solder bath temperature : 260±5°C 2. Bathing time: 10±1 seconds 低温电阻 Low temperature resistance No apparent damage Fulfill the electrical spec. after test. 1. Temperature: -40°C±5°C 2. Time: 1000 hours. No apparent damage Fulfill the electrical spec. after test. 1. Temperature: 150°C±5°C 2. Time: 1000 hours. 耐高温性 High temperature resistance 推荐回流焊接曲线Recommended Reflow Solder curve (2) 储存环境 Storage Condition (a)仓库：温度应在0～30°C之间，湿度应小于60%湿度，产品应在交货之日起1年内使用。 At warehouse: The temperature should be within 0 ~ 30°C and humidity should be less than 60% RH.The product should be used within 1 year from the time of elivery. (b)在板：温度应在40～85°C之间，湿度应小于85%湿度。On board: The temperature should be within -40~85°C and humidity should be less than 85% RH. (3) 工作环境温度 Operating Temperature Range 工作温度范围：-40°C to +85°C。 Operating temperature range : -40°C to +85°C. Chip Antenna 推荐焊&Evaluation Board (1) 电烙铁的使用 Soldering Gun Procedure 以下注意事项仅针对使用电烙铁进行个别器件更换。 Note the follows, in case of using solder gun for replacement. (a) 使用小于30W的电烙铁，温度不高于350°C，焊接时间小于3秒。 The tip temperature must be less than 350°C for the period within 3 seconds by using soldering gun under 30 W. (b) 烙铁不可直接接触器件本体。 The soldering gun tip shall not touch this product directly. (2) 焊锡量 Soldering Volume 注意焊接过程中过多的焊锡量会损害器件本体。 Note that excess of soldering volume will easily get crack the body of this product. 产品尺寸 Product Dimension Chip Antenna 1 应用环境Application Guide 包装信息Package Information A B C D E F L W 8.00±0.3 3.50± 0.051.75±0.1 2.00±0.054.00±0.1 1.50±0.1 2.30± 0.1 1.55± 0.1 编码规则 Par t Number System CS - 2450 - 21-B External DimensionsL*W(mm)2.0*1.2 Central Frequency2450MHz Product Series: Chip Antenna 丝印 Marking Chip Antenna 订货信息Order Information 设备 Device Package 净重 Net Weight 运送式 Carrier 量 Quantity 认证 HSF Status CS-2450 -21-B 2012 Tape & Reel 5000pcs RoHS compliant 版本信息 Revision history 日期/Date 本/Revision 本描述/Description of changes 0.0014g The contents of this data sheet are subject to change without notice. Please confirm the specifications and delivery conditions when placing your order. Chip Antenna 2021-4-2 2022-1-2 1.0 1.1 First Version Second Version 2026-03-04 1.2 Third Version

ReportNo.:CISRR26031816801 Thetestresultsrelateonlytothetestedsamples. ThetestreportshouldnotbereproducedexceptinfullwithoutthewrittenapprovalofShenzhenBangce TestingTechnologyCo.,Ltd. Page1of70 TESTREPORT ReportNo.CISRR26031816801 ProjectNo.CISR260318168 FCCID2BVAO-TWSAK11 ApplicantShantouLingyinTechnologyCo.,Ltd AddressDongxingIndustrialZone,GuoraoTown,ChaoyangDistrict,ShantouCity ManufacturerShantouChaoyangDistrictGuraoHaiyeElectronicFactory AddressDongxingIndustrialZone,GuoraoTown,ChaoyangDistrict,ShantouCity ProductNameTrueWirelessEarphones Trademark- Model/TypereferenceSLEVEPUREX ListedModel(s)AK11,PM-1125 Standard 47CFRPart15.247 DateofsamplereceiptMarch18,2026 TestdateMarch18,2026toMarch24,2026 IssuedateMarch24,2026 TestresultComplied Reviewedby:MorganTan Approvedby:HansHu ReportNo.:CISRR26031816801 Page 2 of 70 Contents 1.STANDARDANDAPPLICABLETESTMETHODS........................................................................................3 2.REPORTVERSION..........................................................................................................................................3 3.TESTDESCRIPTION.......................................................................................................................................4 4.SUMMARY........................................................................................................................................................5 4.1.ProductDescription*..................................................................................................................................5 4.2.RadioSpecificationDescription*..............................................................................................................5 4.3.ModificationofEUT.....................................................................................................................................6 4.4.Deviationfromstandards...........................................................................................................................6 4.5.TestingSite...................................................................................................................................................6 5.TESTCONFIGURATION.................................................................................................................................7 5.1.Testfrequencylist.......................................................................................................................................7 5.2.Descriptionsoftestmode...........................................................................................................................7 5.3.Supportunitusedintestconfiguration....................................................................................................7 5.4.Testsampleinformation.............................................................................................................................7 5.5.Environmentalconditions...........................................................................................................................8 5.6.Statementofthemeasurementuncertainty.............................................................................................8 5.7.EquipmentUsedduringtheTest................................................................................................................9 6.TESTRESULTS.............................................................................................................................................11 6.1.EvaluationResults(Evaluation)...............................................................................................................11 6.1.1.AntennaRequirement.............................................................................................................................11 6.2.RadioSpectrumMatterTestResults(RF)...............................................................................................12 6.2.1.ConductedEmissionatACpowerline.................................................................................................12 6.2.2.20dBBandwidth......................................................................................................................................15 6.2.3.MaximumConductedOutputPower.....................................................................................................17 6.2.4.ChannelSeparation................................................................................................................................18 6.2.5.NumberofHoppingFrequencies..........................................................................................................19 6.2.6.DwellTime...............................................................................................................................................20 6.2.7.Conductedbandedgeandspuriousemission...................................................................................22 6.2.8.Radiatedbandedgeemission...............................................................................................................24 6.2.9.RadiatedSpuriousEmission(below1GHz).........................................................................................30 6.2.10.RadiatedSpuriousEmission(Above1GHz)......................................................................................34 7.APPENDIXREPORT......................................................................................................................................42 7.1.ConductedPeakOutputPower................................................................................................................42 7.2.20dBBandwidth.........................................................................................................................................46 7.3.CarrierFrequenciesSeparation...............................................................................................................…

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ReportNo.:CISRR26031816801 Page 72 of 77 8.TESTSETUPPHOTOS ConductedEmissionatACpowerline Radiatedbandedgeemission RadiatedSpuriousEmission(Above1GHz) ReportNo.:CISRR26031816801 Page 73 of 77 RadiatedSpuriousEmission(below1GHz)