2BR4S-S-09Bluetooth Headphones

S-09 S-09 S-09

Covered Equipment Attestation Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(5)(i)-(ii) of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC ID Model name 2BR4S-S-09 S-01,S-02,S-03,S-05,S-06,S-07,S-08,S- 09,S-10,S-12 We, Applicant Company Name: Shenzhen Lemilingban Technology Co., Ltd. Address: Room 1206, China Railway Building, Nanshan District,Shenzhen,China Phone: 17372637333 certify 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. This includes the cybersecurity and anti-virus software produced or provided by Kaspersky Lab, Inc. or any of ist successors and assignees. We certify 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. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Dec.18,2025 Signature Date Printed Name of Signee: Jianhua Ding Company: Shenzhen Lemilingban Technology Co., Ltd. Address: Room 1206, China Railway Building, Nanshan District,Shenzhen,China Phone: 17372637333 Fax: Email:[email protected]

Local Representative Letter For Certification Service in the USA Federal Communications Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Section 2.911(d)(7), of the Commission’s Rules (47 C.F.R.) we attest as follows for the product listed below: FCC IDModel name S-01,S-02,S-03,S-05,S-06,S-07,S-08,S-09,S-10,S-122BR4S-S-09 We hereby acknowledge as follows: i. both signees confirm that the point of contact accepts responsibility to act as a US- American Representative on behalf of the applicant ii. the point of contact provides the physical U.S. address and email as listed below iii. both parties maintain the requirements of this agreement for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant/Approval HolderUS-American Point of Contact Company Name: FCC US Agent, LLCShenzhen Lemilingban Technology Co., Ltd. 0037488368FRN: 0033402884 Contact Name: Tim Payne Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Jianhua Ding HRoom 1206, China Railway Building, Nanshan District, Shenzhen,China Phone: 708-571-3148 Email: [email protected] 17372637333 [email protected]

Confidentiality Request Letter For Certification Service in the USA Federal Communication Commission Equipment Authorization Division, Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21048 To whom it may concern Pursuant to Paragraphs §0.457 and 0.459 of the Commission’s Rules (47 C.F.R.) and Section §552(b)(4) of the Freedom of Information Act, we request confidentiality for the documentation of the following products: FCC ID Model name 2BR4S-S-09 S-01,S-02,S-03,S-05,S-06,S-07,S-08,S- 09,S-10,S-12 For the products listed above, we request permanent confidentiality for all applicable exhibits as there are: • the Operational Description • the Block Diagram • the Schematics • the Parts Lists • the Tune Up Information The above listed exhibits contain trade secrets and proprietary information that could be of benefit to our competitors. If you have any questions, please feel free to contact us at the address shown below. Sincerely, Dec.18,2025 Signature Date Printed Name of Signee: Jianhua Ding Company: Shenzhen Lemilingban Technology Co., Ltd. Address: Room 1206, China Railway Building, Nanshan District,Shenzhen,China Phone: 17372637333 Fax: Email: [email protected]

Shenzhen Lemilingban Technology Co., Ltd. Huizhou, Huiyang District, Sanhe Street, U Valley, Building 1, 9thFloor Declaration Letter Date: Dec.18,2025 To: Federal Communications Commission Authorization and Evaluation Division 1435 Oakland Mills Road Columbia, MD 21046 To Whom It May Concern: For our business issue and marketing requirement, we would like to list different model number on the FCC certificates and reports, as following: FCC ID: 2BR4S-S-09 Model Number: S-01,S-02,S-03,S-05,S-06,S-07,S-08,S-09,S-10,S-12 Model Difference: The only difference between the models is the color of appearance, the other (hardware and software) was the same as before. Sincerely, Name / Title Jianhua Ding/Manager Company Name Shenzhen Lemilingban Technology Co., Ltd. Company Address Room 1206, China Railway Building, Nanshan District,Shenzhen,China Tel: 17372637333 Fax: Email: [email protected]

External Photographs FCC ID: 2BR4S-S-09

Label Sample for FCC ID: 2BR4S-S-09 Size for the label: 1.5cm X 1cm Product Name : Bluetooth Headphones Model : S-09 FCC ID : 2BR4S-S-09

Internal photographs FCC ID: 2BR4S-S-09 Antenna

MAXLAB TESTING CO., LTD. Report No.: MAX251223901605RFMPE Report No.: MAX251223901605RFMPE Page 1 of 6 FCC Part 15.247 Shenzhen Lemilingban Technology Co., Ltd. FCC ID: 2BR4S-S-09 FCC Rule(s): FCC Part 15.247 Product Description: Bluetooth Headphones Tested Model: S-09 Report No.: MAX251223901605RF Tested Date: Dec.16~Dec.31,2025 Issued Date: Dec.31,2025 Tested By: Lris Yao / Engineer Reviewed By: Levi Xiao / EMC Manager Approved & Authorized By: Salon Ouyang / PSQ Manager Prepared By: MAXLAB TESTING CO., LTD. 1/F, Building B, Xinshidai GR Park, Shiyan Street, Bao'an District, Shenzhen, Guangdong,518052,People’s Republic of China Tel: 400-882-9628 Fax: 86- 755-26508703 MAXLAB TESTING CO., LTD. Report No.: MAX251223901605RFMPE Report No.: MAX251223901605RFMPE Page 2 of 6 FCC Part 15.247 1. GENERAL INFORMATION 1.1 Product Description for Equipment Under Test (EUT) Client Information Applicant: Shenzhen Lemilingban Technology Co., Ltd. Address of applicant: Room 1206, China Railway Building, Nanshan District,Shenzhen, China Manufacturer: Shenzhen Xiaogezi Technology Co., Ltd. Address of manufacturer: Room 608, No. 69 Jixiang 1st Road, Pingxi Community, Pingdi Street, Longgang District, Shenzhen General Description of EUT Product Name: Bluetooth Headphones Brand Name: N/A Models No.: S-09 Adding Model(s): S-01,S-02,S-03,S-05,S-06,S-07,S-08,S-10,S-12 Rated Voltage: DC 3.7V Note: The test data is gathered from a productio.0n sample provided by the manufacturer. Technical Characteristics of EUT Bluetooth Version: V6.0 Frequency Range: 2402-2480MHz Modulation: GFSK Quantity of Channels: 40 Channel Separation: 2MHz Type of Antenna: Chip antenna Antenna Gain: 2.7dBi MAXLAB TESTING CO., LTD. Report No.: MAX251223901605RFMPE Report No.: MAX251223901605RFMPE Page 3 of 6 FCC Part 15.247 1.2 Test Standards The tests were performed according to following standards: ANSI C95.1–1999: IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz. FCC KDB 447498 D01 General RF Exposure Guidance v06: Mobile and Portable Device, RF Exposure, Equipment Authorization Procedures. FCC CFR 47 part1 1.1310: Radiofrequency radiation exposure limits. FCC CFR 47 part2 2.1091: Radiofrequency radiation exposure evaluation: mobile devices 1.3 Test Facility MAXLAB Testing Co., Ltd. 1/F, Building B, Xinshidai GR Park, Shiyan Street, Bao'an District, Shenzhen, ShiyanStreet, Bao'an District, Shenzhen,Guangdong,518052,People’s Republic of China FCC Test Firm Registration Number: 562200 Designation Number: CN1338 Tel: 400-882-9628 Fax: 86-755-26508703 1.4 Measurement Uncertainty Measurement uncertainty Parameter Conditions Uncertainty RF Output Power Conducted ±0.42dB MAXLAB TESTING CO., LTD. Report No.: MAX251223901605RFMPE Report No.: MAX251223901605RFMPE Page 4 of 6 FCC Part 15.247 2. TEST LIMIT 2.1 Requirement According to KDB447498 D01 General RF Exposure Guidance v06 Section 4.3.1 Standalone SAR test exclusion considerations: “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, listed below, is satisfied. These test exclusion conditions are based on source-based time-averaged maximum conducted output power of the RF channel requiring evaluation, adjusted for tune-up tolerance, and the minimum test separation distance required for the exposure conditions. The minimum test separation distance is determined by the smallest distance from the antenna and radiating structures or outer surface of the device, according to the host form factor, exposure conditions and platform requirements, to any part of the body or extremity of a user or bystander (see 5) of section 4.1) To qualify for SAR test exclusion, the test separation distances applied must be fully explained and justified by the operating configurations and exposure conditions of the transmitter and applicable host platform requirements, typically in the SAR measurement or SAR analysis report, according to the required published RF exposure KDB procedures. When no other RF exposure testing or reporting is required, a statement of justification and compliance must be included in the equipment approval, in lieu of the SAR report, to qualify for the SAR test exclusion.When required, the device specific conditions described in the other published RF exposure KDB procedures must be satisfied before applying these SAR test exclusion provisions; for example, handheld PTT two-way radios, handsets, laptops & tablets etc.” [(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 • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below 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 according to 5) in section 4.1 is applied to determine SAR test exclusion. When one of the following test exclusion conditions is satisfied for all combinations of simultaneous transmission configurations, further equipment approval is not required to incorporate transmitter modules in host devices that operate in the mixed mobile and portable host platform exposure conditions. The grantee is responsible for documenting this according to Class I permissive change requirements. Antennas that qualify for standalone SAR test exclusion must apply the estimated standalone SAR to determine simultaneous transmission te…

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2.4 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 RANT2012F245X07 (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.) PeakGain2.7 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 電話:13530576606 RAIN International Technology Co., Ltd. 7 / F, Building F, G Zh H ich z ua 2 n 0 g 1 Pa 2 rk C ,T h on ip g 'a A n, n G t u e sh n u n , S a h : en R zh A en NT2012F245X07 2.4GHz2012ChipAntenna:RANT2012F245C07 EvaluationBoardReference PCBDimensionAntennaLayoutReferenceUnit:mm ElectricalCharacteristics ReturnLoss ReturnLoss&Radiation 1 Frequency(MHz) S11(dB) 2400-10.77 2450-24.81 2484-10.243 Radiation Z Y X 2400MHz2450MHz2500MHz Efficiency70.56%75.25%71.01% 2.4GHz 2012 Chip Antenna: RANT2012F245X07 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 2.4GHz 2012 Chip Antenna: RANT2012F245X07 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 2.4GHz 2012 Chip Antenna: RANT2012F245X 2.4GHz 2012 Chip Antenna: RANT2012F245X07 07 _ 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

MAXLAB TESTING CO., LTD. Report No.: MAX251223901605RF Report No.: MAX251223901605RF Page 1 of 31 FCC Part 15.247 FCC Part 15C Measurement and Test Report For Shenzhen Lemilingban Technology Co., Ltd. FCC ID: 2BR4S-S-09 FCC Rule(s): FCC Part 15.247 Product Description: Bluetooth Headphones Tested Model: S-09 Report No.: MAX251223901605RF Tested Date: Dec.16~Dec.31,2025 Issued Date: Dec.31,2025 Tested By: Lris Yao / Engineer Reviewed By: Levi Xiao / EMC Manager Approved & Authorized By: Salon Ouyang / PSQ Manager Prepared By: MAXLAB TESTING CO., LTD. 1/F, Building B, Xinshidai GR Park, Shiyan Street, Bao'an District, Shenzhen, Guangdong,518052,People’s Republic of China Tel: 400-882-9628 Fax: 86- 755-26508703 MAXLAB TESTING CO., LTD. Report No.: MAX251223901605RF Report No.: MAX251223901605RF Page 2 of 31 FCC Part 15.247 TABLE OF CONTENTS 1. GENERAL INFORMATION ...................................................................................................................................... 3 1.1 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT) .................................................................................. 3 1.2 TEST STANDARDS ...................................................................................................................................................... 4 1.3 TEST METHODOLOGY ................................................................................................................................................ 4 1.4 TEST FACILITY .......................................................................................................................................................... 4 1.5 EUT SETUP AND TEST MODE .................................................................................................................................... 5 1.6 MEASUREMENT UNCERTAINTY ................................................................................................................................. 5 1.7 TEST EQUIPMENT LIST AND DETAILS ........................................................................................................................ 6 2. SUMMARY OF TEST RESULTS .............................................................................................................................. 7 3. RF EXPOSURE ............................................................................................................................................................ 8 3.1 STANDARD APPLICABLE ............................................................................................................................................ 8 3.2 TEST RESULT............................................................................................................................................................. 8 4. ANTENNA REQUIREMENT ..................................................................................................................................... 9 4.1 STANDARD APPLICABLE ............................................................................................................................................ 9 4.2 EVALUATION INFORMATION...................................................................................................................................... 9 5. POWER SPECTRAL DENSITY .............................................................................................................................. 10 5.1 STANDARD APPLICABLE .......................................................................................................................................... 10 5.2 TEST PROCEDURE .................................................................................................................................................... 10 5.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................... 10 5.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................... 10 6. 6DB BANDWIDTH .................................................................................................................................................... 13 6.1 STANDARD APPLICABLE .......................................................................................................................................... 13 6.2 TEST PROCEDURE .................................................................................................................................................... 13 6.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................... 13 6.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................... 13 7. RF OUTPUT POWER ............................................................................................................................................... 16 7.1 STANDARD APPLICABLE .......................................................................................................................................... 16 7.2 TEST PROCEDURE .................................................................................................................................................... 16 7.3 ENVIRONMENTAL CONDITIONS ............................................................................................................................... 16 7.4 SUMMARY OF TEST RESULTS/PLOTS ....................................................................................................................... 16 8. FIELD STRENGTH OF SPURIOUS EMISSIONS ................................................................................................ 17 8.1 STANDARD APPLICABLE ...........................................................................…

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Test Setup Photos FCC ID: 2BR4S-S-09