2BF2F-APWZ608Starry Sky Series Wireless Earphones

1/1 USAgentforServiceofProcessLETTEROFATTESTATION TO: OfficeofEngineeringTechnology FederalCommunicationsCommission 7435OaklandMillsRoad Columbia,MD21046 USAgentforServiceofProcess: CompanyName:GSSSERVICEINC FRN:0033402082 ContactName:MichouxLogan Address:6547NAcademyBlvd#2266,ColoradoSprings,COLORADO,80918,UnitedStates TelephoneNo:001-949-2990192 Email:[email protected] Applicant: Companyname:ShenzhenJinchengChaopinTechnologyCo.,Ltd ProductDescription:StarrySkySeriesWirelessEarphones Granteecode:2BF2F FCCID:2BF2F-APWZ608 FRN:0035325885 ContactName:ManlingLuo Address:B1203,JieshunTechnologyCenter,No.5Guansheng2ndRoad,LuhuCommunity, GuanhuStreet,LonghuaDistrict,Shenzhen,China TelephoneNo:+8613719495855 Email:[email protected] [ShenzhenJinchengChaopinTechnologyCo.,Ltd]certifiesthat,asofthedateofthis filingoftheapplicationwiththeTCB,[GSSSERVICEINC]isourdesignatedUS agentforserviceofprocessfortheabovereferencedFCCID.[ShenzhenJincheng ChaopinTechnologyCo.,Ltd]acceptstomaintainanagentfornolessthanone yearafterthegranteehasterminatedallmarketingandimportationorthe conclusionofanycommissionrelatedproceedinginvolvingequipment.[GSS SERVICEINC]accepts,asofthedateofthefilingoftheapplication,the obligationofthedesignatedUSagentforserviceofprocessfortheabove referenceFCCID. TheUSAgentforServiceofProcessisawareofandagreestocomplywiththerequirements outlinedintheFCCEquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause §2.911. TheApplicantisawareofandagreestocomplywiththerequirementsoutlinedintheFCC EquipmentAuthorizationProgram,ReportandOrderFCC22-84,andclause§2.911. Date:2024/8/27 Applicant’sName: ManlingLuo USAgent’sName: MichouxLogan Title:GeneralManagerTitle:Manager SignatureSignature

C5266091_X24_Ed.2 1/1 “Attestation Statements” TO: Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 The Commission adopted rules that prohibit equipment authorization for “covered” telecommunications equipment and video surveillance equipment produced by entities identified on the Commission’s Covered List 1 , which is periodically updated. See the Covered List for more details. This Attestation Statement is to confirm that we follow the Section 2.911(d)(5)(i)-(ii) Applicant Company name: Shenzhen Jincheng Chaopin Technology Co., Ltd Applicant’s FRN：0035325885 Product Description: Starry Sky Series Wireless Earphones Grantee code: 2BF2F FCC ID: 2BF2F-APWZ608 Contact Name: Manling Luo Address: B1203, Jieshun Technology Center, No.5 Guansheng 2nd Road,Luhu Community, Guanhu Street, Longhua District, Shenzhen, China Telephone No: +86 13719495855 Fax No: / Email: [email protected] i. [Shenzhen Jincheng Chaopin Technology 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. The applicant must sign this certification. ii. [Shenzhen Jincheng Chaopin Technology Co., Ltd] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant [is not] (as a specifically named entity or any of its subsidiaries or affiliates) identified on the Covered List as an entity producing “covered” equipment. The applicant must sign this certification. [Guangzhou Renyun Trading 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 . Date: 2024/9/2 Applicant’s Name: Manling Luo Title: General Manager Signature: 1 The Commission’s Covered List is published by the Public Safety and Homeland Security Bureau and posted on the Commission’s website. This Covered List, which is periodically updated, identifies particular equipment, produced by particular entities, that constitutes “covered” equipment. https://www.fcc.gov/supplychain/coveredlist

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Shenzhen Jincheng Chaopin Technology Co., Ltd Address: B1203, Jieshun Technology Center, No.5 Guansheng 2nd Road,Luhu Community, Guanhu Street, Longhua District, Shenzhen, China Product Name: Starry Sky Series Wireless Earphones Model Number: APWZ-608 FCC Identifier: 2BF2F-APWZ608 We authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, to act on our behalf on all matters concerning the above named equipment. Any individual within LGAI Technological Center S.A. is authorized to act on our behalf and take action on the application. We declare that authorize LGAI Technological Center S.A., Ronda de la Font del Carme, s/n, 08193 Bellaterra, Spain, is allowed to forward all information related to the approval project to the Federal Communication Commission and to discuss any issues concerning the approval application. Any and all acts carried out by LGAI Technological Center S.A. on our behalf shall have the same effect as acts of our own. Name: Manling Luo 2024-9-2 Title: General Manager Signature of applicant:

C5266091_X10_Ed.2 1/1 Shenzhen Jincheng Chaopin Technology Co., Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046w Date: 2024-9-2 Subject: Request for Confidentiality FCC ID: 2BF2F-APWZ608 To Whom It May Concern, Pursuant to the provisions of Sections 0.457 and 0.459 of Commission's rules (47CFR0.457, 0.459), we are requesting the Commission to withhold the following attachment(s) as confidential document from public disclosure. Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☐ Internal Photos ☐ NOTE 1 ☐ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No NOTE 1: Long-Term Confidentiality may be permitted under special conditions (See II. LONG-TERM CONFIDENTIALITY, Section 3 of KDB 726920, use last in force) NOTE 2: Short-Term Confidentiality can be requested for a maximum of 180 days from the date of the grant. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. In case of short-term Confidentiality, the applicant requests the exhibits selected above are withheld from public view for a period of ______ days from the date of the Grant of Equipment Authorization and prior to marketing. It is our understanding that all measurement test reports, FCC ID label format and correspondent during certification review process cannot be granted as confidential documents and those information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Manling Luo Title: General Manager

Shenzhen QC Testing Laboratory Co., Ltd. Page 1 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Product Name: Starry Sky Series Wireless Earphones Test Model No.: APWZ-608 EUT Constructional Details Shenzhen QC Testing Laboratory Co., Ltd. Page 2 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 3 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 4 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 5 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 6 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 7 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 8 of8 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn ------End------

FCC ID: 2BF2F-APWZ608

Shenzhen QC Testing Laboratory Co., Ltd. Page 1 of5 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Product Name: Starry Sky Series Wireless Earphones Test Model No.: APWZ-608 EUT Constructional Details： Shenzhen QC Testing Laboratory Co., Ltd. Page 2 of5 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 3 of5 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Shenzhen QC Testing Laboratory Co., Ltd. Page 4 of5 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Antenna Antenna Shenzhen QC Testing Laboratory Co., Ltd. Page 5 of5 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn ------End------

Shenzhen QC Testing Laboratory Co., Ltd. Page 1 of 1 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn FCC ID: 2BF2F-APWZ608 RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 Here, For BLE Max Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit 2.65 1.841 2480 5 0.580 3.0 So a SAR test is not required

Shenzhen QC Testing Laboratory Co., Ltd. Report No.: QCT24GR-1903E-01 Page 1 of 38 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn FCC PART 15.247 TEST REPORT On Behalf of Shenzhen Jincheng Chaopin Technology Co., Ltd B1203, Jieshun Technology Center, No.5 Guansheng 2nd Road,Luhu Community, Guanhu Street, Longhua District, Shenzhen, China September 2, 2024 T his Repo rt Co nc erns: Original Report Equip men t T ype: Starry Sky Series Wireless Earphones Test Engineer: LBi Li / Report Number: QCT24GR-1903E-01 Test Date: July 31, 2024 ~ September 2, 2024 Reviewed By: Gordon Tan/ Approved By: Kendy Wang / Prepared By: Shenzhen QC Testing Laboratory Co., Ltd. East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 FCC ID: 2BF2F-APWZ608 Model: APWZ-608 Shenzhen QC Testing Laboratory Co., Ltd. Report No.: QCT24GR-1903E-01 Page 2 of 38 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Table of Contents 1. GENERAL INFORMATION ................................................................................................. 5 1.1 Product Description for Equipment under Test (EUT) ............................................................5 1.2 System Test Configuration .....................................................................................................6 1.3 Test Facility ............................................................................................................................7 1.4 Measurement Uncertainty ......................................................................................................7 2. SUMMARY OF TEST RESULTS ........................................................................................ 8 3. LIST OF TEST AND MEASUREMENT INSTRUMENTS .................................................... 9 3.1 Conducted Emission Test ......................................................................................................9 3.2 Radiated Emission Test .........................................................................................................9 3.3 RF Conducted test ............................................................................................................... 10 4. ANTENNA REQUIREMENT .............................................................................................. 11 5. CONDUCTED EMISSIONS ............................................................................................... 12 5.1 Applicable Standard ............................................................................................................. 12 5.2 Limit ..................................................................................................................................... 12 5.3 Test setup ............................................................................................................................ 12 5.4 EMI Test Receiver Setup ..................................................................................................... 12 5.5 Test procedure ..................................................................................................................... 12 5.6 Test Data ............................................................................................................................. 12 6. CONDUCTED PEAK OUTPUT POWER........................................................................... 15 6.1 Applicable Standard ............................................................................................................. 15 6.2 Limit ..................................................................................................................................... 15 6.3 Test setup ............................................................................................................................ 15 6.4 Test Data ............................................................................................................................. 15 7. CHANNEL BANDWIDTH & 99% OCCUPIED BANDWIDTH ........................................... 18 7.1 Applicable Standard ............................................................................................................. 18 7.2 Limit ..................................................................................................................................... 18 7.3 Test setup ............................................................................................................................ 18 7.4 Test Procedure .................................................................................................................... 18 7.5 Test Data ............................................................................................................................. 18 8. POWER SPECTRAL DENSITY ........................................................................................ 23 8.1 Applicable Standard ............................................................................................................. 23 8.2 Limit ..................................................................................................................................... 23 8.3 Test setup ............................................................................................................................ 23 8.4 Test Procedure .................................................................................................................... 23 8.5 Test Data .............................................................................................................…

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2.4GHz2012ChipAntenna:RANT2012F245C07 Dimension(mm) L2.05+-0.10 W1.20+-0.10 T0.65+-0.10 No.TerminalName 1Feeding/GNG 2GND Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT2012F245C07 (A)(B)(C)(D)(E)(F) (A)ProductTypeChipAntenna (B)SizeCode2.0x1.2mm(+-0.2mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=07 ElectricalSpecification WorkingFrequencyRange2400~2484MHz Bandwidth84(Min.) PeakGain-0.68 dBi (Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature( °C )-40~85 °C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration 咏成國際科技有限公司 RAINInternationalTechnologyCo.,Ltd TEL :13530576606 . 2.4GHz2012ChipAntenna:RANT2012F245C07 EvaluationBoardReference PCBDimensionAntennaLayoutReferenceUnit:mm ElectricalCharacteristics ReturnLoss ReturnLoss&Radiation 1 Frequency(MHz) S11(dB) 2400-10.77 2450-24.81 2484-10.243 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Z Y X Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div 2.4GHz2012ChipAntenna:RANT2012F245C07 TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 20127”5K/Reel 9.0±0.5 60±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTDP PaperType2012 1.50±0.202.30±0.208.0±0.201.75±0.103.5±0.054.0±0.102.0±0.050.75±0.101.57±0.104.0±0.1 2.4GHz2012ChipAntenna:RANT2012F245C07 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:RANT2012F245C07 2.4GHz2012ChipAntenna:RANT2012F245C07 _ 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 12020/10/15NewDatasheet

Shenzhen QC Testing Laboratory Co., Ltd. Page 1 of 2 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Product Name: Starry Sky Series Wireless Earphones Test Model No.: APWZ-608 Photograph of Test Setup Conducted Emissions Radiated Emissions (30 MHz - 1 GHz) Shenzhen QC Testing Laboratory Co., Ltd. Page 2 of 2 Address: East of 1/F., Building E, Xinghong Science Park, No.111, Shuiku Road, Fenghuanggang, Xixiang Street, Bao'an District, Shenzhen, Guangdong, China Tel: 0755-23008269 Fax: 0755-23726780 www.qctest.com.cn Radiated Emissions (Above 1 GHz)