2A8TAI33Wireless Bluetooth Earphones

Shenzhen Shengdaren Technology Co.,Ltd 2.911 (d)(5)(i) Equipment Type Attestation v1.2 Section 2.911(d)(5)(i) Certification – Equipment Type Company name: Shenzhen Shengdaren Technology Co.,Ltd Address: 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Product Name: Wireless Bluetooth Earphones FCC ID: 2A8TAI33 Model(s): I33, I33A 2.911(d)(5)(i) Equipment Type We, [Shenzhen Shengdaren Technology Co.,Ltd] (“the applicant”) certify that the equipment for which authorization is sought through certification is not:  Prohibited from receiving an equipment authorization pursuant to § 2.903; of the FCC rules.  Identified as an equipment type in the “Covered List” NOTE 1 Yours sincerely, Name: Sunny Kang Date: Jun. 28, 2024 Title: manager Company name: Shenzhen Shengdaren Technology Co.,Ltd Signature: NOTE 1 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Shengdaren Technology Co.,Ltd 2.911 (d)(5)(ii) Applicant Attestation v1.3 Section 2.911(d)(5)(ii) Certification – Applicant (Covered List ) Company name: Shenzhen Shengdaren Technology Co.,Ltd Address: 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Product Name: Wireless Bluetooth Earphones FCC ID: 2A8TAI33 Model(s): I33, I33A 2.911(d)(5)(ii) Applicant filing We, [Shenzhen Shengdaren Technology Co.,Ltd] (“the applicant”) certify that, as of the date of the filing of the application, the applicant is not identified NOTE 1 on the “Covered List” NOTE 2 ,established pursuant to §1.50002 of this chapter, as an entity producing covered communications equipment. Yours sincerely, Name: Sunny Kang Date: Jun. 28, 2024 Title: manager Company name: Shenzhen Shengdaren Technology Co.,Ltd Signature: NOTE 1 Delete option not applicable to this application. NOTE 2 “Covered List ”; is the List of Equipment and Services Covered By Section 2 of The Secure Networks Act, available at https://www.fcc.gov/supplychain/coveredlist References; 1) 986446 D01 Covered Equipment v01 https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=325672 2) Federal Register document 2022-28263 published on 02/06/23 https://www.federalregister.gov/documents/2023/02/06/2022-28263/protecting-against-national-security-threats-to-the-com munications-supply-chain-through-the

Shenzhen Shengdaren Technology Co.,Ltd Agent Authorization Company: Shenzhen Shengdaren Technology Co.,Ltd Address: 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Product Name: Wireless Bluetooth Earphones Model Number(s): I33, I33A Product Description: Wireless Bluetooth Earphones We authorize MiCOM Labs Inc., 575 Boulder Court, Pleasanton, California 94566, USA, to act on our behalf on all matters concerning the certification of above named equipment. We declare that MiCOM Labs Inc. is allowed to forward all information related to the approval and certification of equipment to the regulatory agencies as required and to discuss any issues concerning the approval application. Any and all acts carried out by MiCOM Labs on our behalf shall have the same effect as acts of our own. Signature: Date: Jun. 28, 2024 Name: Sunny Kang Title: manager Company: Shenzhen Shengdaren Technology Co.,Ltd

Shenzhen Shengdaren Technology Co.,Ltd Office of Engineering Technology Federal Communications Commission 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Jun. 28, 2024 Subject; Request for Confidentiality FCC ID: 2A8TAI33 To Whom It May Concern, Pursuant to the provisions of the Commission’s rules Title 47 Sections §0.457 and §0.459, we are requesting the Commission to withhold the following attachment(s) as confidential documents from public disclosure indefinitely. These documents contain detailed system and equipment descriptions and are considered as proprietary information in operation of the equipment. The public disclosure of these documents might be harmful to our company and would give competitors an unfair advantage in the market. Schematic Diagram Block Diagram Parts List Operational Description Tune-up Procedure In additional to above mentioned documents, in order to comply with the marketing regulations in Title 47 CFR §2.803 and the importation rules in Title 47 CFR §2.1204, while ensuring that business sensitive information remains confidential until the actual marketing of newly authorized devices, we request Short Term Confidentiality of the following attachment(s); External Photos Test Setup Photos Internal Photos User Manual For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuantto KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Signature: Name: Sunny Kang Title: manager

Shenzhen Shengdaren Technology Co.,Ltd Model Difference Declaration To Whom It May Concern, We, Shenzhen Shengdaren Technology Co.,Ltd (Wireless Bluetooth Earphones) ; Model Number: I33, I33A; Model Difference: All model’s the function, software and electric circuit are the same, only with product model named different. Test sample model: I33. Please contact me if you have any question. Signature: Date: Jun. 28, 2024 Name: Sunny Kang Title: manager

FCC ID LABEL: Ca. 5mm x 15mm Label Location FCC ID: 2A8TAI33

FCC RF Exposure EUT Description: Wireless Bluetooth Earphones Model No.: I33 FCC ID: 2A8TAI33 1. Limits According to KDB 447498 D01 General RF Exposure Guidance v01 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: Result=P/D*√F F= the RF channel transmit frequency in GHz P=Maximum turn‐up power in mw D=Min. test separation distance in mm 2. Test Result of RF Exposure Evaluation Output power (dBm) Tune Up Power (dBm) Max Tune Up power dBm/mW Min test separati on distance mm Result Limit SAR Test Exclusion EDR 8.33 7.5±1(8.5)7.08 5 2.22975 3.0 Pass Note: PK Output power= conducted power. Conducted power see the test report HK2406173130-E, antenna gain=2.7dBi Per KDB 447498 D01, when the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. The test exclusion threshold is 2.22975 which is<= 3, SAR testing is not required. Note: Exclusion Thresholds Results=[(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] ·[√f (GHz)] f(GHz) is the RF channel transmit frequency in GHz Distance=5mm

2.4GHz3216ChipAntenna:RANT3216F245X02 _ Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT3216F245X02 (A)(B)(C)(D)(E)(F) ElectricalSpecification ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration No.TerminalName 1Feeding/GNG 2GND/Feeding (A)ProductTypeChipAntenna (B)SizeCode 3.2x1.6mm( ± 0.2mm) (C)MaterialHighKmaterial (D)Frequency2.4~2.5GHz (E)FeedingmodePIFA&SingleFeeding (F)AntennatypeType=0X 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 3.20±0.20 W 1.60±0.20 T 0.45±0.20 咏成國際科技有限公司電話:13530576606 RAINInternationalTechnologyCo.,Ltd. 7/F,BuildingF,ZhichuangPark,Tong'an,Gushu,Shenzhen  2.4GHz3216ChipAntenna:RANT3216F245X02 _ 1 EvaluationBoardReference PCBDimensionAntennaLayoutReference Unit:mm ElectricalCharacteristics ReturnLoss&Radiation ReturnLoss Frequency(MHz) S11(dB) 2400-10.50 2450-30.62 2500-11.47 Radiation X Y Z 2.4GHz3216ChipAntenna:RANT3216F245X02 _ TapingSpecifications ReelandTapingSpecification ReelSpecification TYPESIZEABCD 32167”5K/Reel 9.0±0.5 60±213.5±0.5178±2 TappingSpecification PackagingTypeABWEFGHTψDP PaperType3216 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 2.4GHz3216ChipAntenna:RANT3216F245X02 _ 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 2.4GHz3216ChipAntenna:RANT3216F245X02 _ 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

Page 1 of 53 Report No.: HK2406173130-E FCC Test Report Test Report On Behalf of Shenzhen Shengdaren Technology Co.,Ltd For Wireless Bluetooth Earphones Model No.: I33, I33A FCC ID: 2A8TAI33 Prepared For: Shenzhen Shengdaren Technology Co.,Ltd 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Prepared By: Shenzhen HUAK Testing Technology Co., Ltd. 1-2/F., Building B2, Junfeng Zhongcheng Zhizao Innovation Park, Heping, Fuhai Street, Bao’an District, Shenzhen, Guangdong, China Date of Test: Jun. 17, 2024 ~ Jun. 26, 2024 Date of Report: Jun. 26, 2024 Report Number: HK2406173130-E Page 2 of 53 Report No.: HK2406173130-E Test Result Certification Applicant’s Name .................. : Shenzhen Shengdaren Technology Co.,Ltd Address .................................. : 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Manufacturer's Name ........... : Shenzhen Shengdaren Technology Co.,Ltd Address .................................. : 2nd&3rd Floor,3D Printing Industrial Park, No.17-1,Guanlan Avenue,Longhua District, Shenzhen, China Product Description Trade Mark ............................. : N/A Product Name ......................... : Wireless Bluetooth Earphones Model and/or Type Reference : I33, I33A Standards .............................. : 47 CFR FCC Part 15 Subpart C 15.247 This publication may be reproduced in whole or in part for non-commercial purposes as long as the Shenzhen HUAK Testing Technology Co., Ltd. is acknowledged as copyright owner and source of the material. Shenzhen HUAK Testing Technology Co., Ltd. takes no responsibility for and will not assume liability for damages resulting from the reader's interpretation of the reproduced material due to its placement and context. Date of Test .................................... . Date (s) of Performance of Tests .... . Jun. 17, 2024 ~ Jun. 26, 2024 Date of Issue .................................... Jun. 26, 2024 Test Result ........................................ Pass Testing Engineer Len Liao Technical Manager Sliver Wan Authorized Signatory Jason Zhou Page 3 of 53 Report No.: HK2406173130-E Table of Contents Page 1. Summary ................................................................................................................................... 5 1.1. Test Standards .......................................................................................................................................... 5 1.2. Test Description ....................................................................................................................................... 5 1.3. Test Facility .............................................................................................................................................. 6 1.4. Statement of the Measurement Uncertainty .......................................................................................... 6 2. General Information .................................................................................................................. 7 2.1. Environmental Conditions ....................................................................................................................... 7 2.2. General Description of EUT ..................................................................................................................... 7 2.3. Description of Test Modes and Test Frequency ....................................................................................... 8 2.4. Equipments Used during the Test ............................................................................................................ 9 2.5. Related Submittal(s) / Grant (s) ............................................................................................................. 10 2.6. Modifications ......................................................................................................................................... 10 2.7. Description of Test Setup ....................................................................................................................... 10 2.8. Description of Support Units ................................................................................................................. 11 3. Test Conditions and Results ..................................................................................................... 12 3.1. Conducted Emissions Test...................................................................................................................... 12 3.2. Radiated Emissions and Band Edge ....................................................................................................... 15 3.3. Maximum Peak Conducted Output Power ............................................................................................ 26 3.4. 20dB Bandwidth .................................................................................................................................... 27 3.5. Frequency Separation ............................................................................................................................ 31 3.6. Number of Hopping Frequency ............................................................................................................. 33 3.7. Time of Occupancy (Dwell Time) ........................................................................................................... 35 3.8. Out‐of‐Band Emissions........................................................................................................................... 39 3.9. Pseudorandom Frequency Hopping Sequence ..................................................................................... 49 3.10. Antenna Requirement ........................................................................................................................... 50 4. Test Setup Photos of the EUT ...........................…

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Test Model：I33 Radiated Emission Conducted Emission