2A2KIWIRTWSBKPRMTrue Wireless Stereo Earbuds

You Tec Ltd. Attestation Statements Not Covered Entity Applicant To: Federal Communications Commission Date: 03-29-2023 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(ii) filing FCC ID: 2A2KIWIRTWSBKPRM You Tec 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 a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely yours, Applicant Signature Printed Name: Cornel Nicolae Calin Title: Head of Production Tel: +86 186-8215-1582 Email: [email protected] Applicant Signature

You Tec Ltd. Attestation Statements Not Covered Equipment To: Federal Communications Commission Date: 03-29-2023 7435 Oakland Mills Road, Columbia, MD 21046, USA Ref: Information Required by Section 2.911(d)(5)(i) filing FCC ID: 2A2KIWIRTWSBKPRM You Tec 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. Sincerely yours, Applicant Signature Printed Name: Cornel Nicolae Calin Title: Head of Production Tel: +86 186-8215-1582 Email: [email protected] Applicant Signature

You Tec Ltd Santok House Unit L, Braintree Industrial Estate, Braintree Road, South Ruislip Middlesex, HA4 0EJ, United Kingdom Date: Apr. 14, 2023 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 FCC ID: 2A2KIWIRTWSBKPRM US Agent – Attestation Statement / Part 2.911(d)(7) [ You Tec Ltd] certifies, that as of [Apr. 14, 2023], we have designated FCC US Agent, LLC to accept service of process on our behalf for FCC ID: 2A2KIWIRTWSBKPRM. [ You Tec 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. FCC US Agent, 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 [You Tec Ltd] for FCC ID: 2A2KIWIRTWSBKPRM. Designated Agent Information: Company Name: FCC US Agent, LLC FRN: 0033402884 Address: 3722 Illinois Avenue, Saint Charles, IL, 60174, USA Contact Person: Tim Payne Phone: 708-571-3148 Email: [email protected] Sincerely, Company: [You Tec Ltd] Designated Agent: FCC US Agent, LLC Company Representative: [Cornel Nicolae Calin] Tel: +86 186-8215-1582 Email: [email protected] Designated Agent Representative: Tim Payne Signature: Signature:

TCB Authority to Act as Agent Number: MS-0045317 Revision: 0 Effective date: Oct 8, 2021 Page 1 of 1 You Tec Ltd. Authority to Act as Agent Date: 2023-03-29 TUV Rheinland of North America, Inc. 1279 Quarry Lane., Suite. A Pleasanton, CA 94566 To Whom It May Concern: I appoint TÜV Rheinland (Shenzhen) Co., Ltd. to act as our agent in the preparation of this application for equipment certification. I certify that submitted documents properly describe the device or system for which equipment certification is sought. I also certify that each unit manufactured, imported or marketed, as defined in the FCC or Industry Canada’s regulations will have affixed to it a label identical to that submitted for approval with this application. For instances where our authorized agent signs the application for certification on our behalf, I acknowledge that all responsibility for complying with the terms and conditions for Certification, as specified by TUV Rheinland Group, still resides with You Tec Ltd., Santok House Unit L, Braintree Industrial Estate, Braintree Road, South Ruislip, Middlesex, United Kingdom. For TCB applications, We certify that we are not subject to denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. Further, no party, as defined in 47 CFR 1.2002 (b), to the application is subject to denial of federal benefits, that includes FCC benefits. Thank you, Agency Agreement Date: 2024-03-28 Agreement is valid for 12 months from the above date. By: __________________________ Cornel Nicolae Calin (Signature) (Print name) Head of Production +86 186-8215-1582 (Title) (Telephone) On behalf of: You Tec Ltd. (Company Name)

2.4GHz2012ChipAntenna:RANT2012F245X5 Dimension(mm) L2.05+-0.15 W1.20+-0.15 T0.85+-0.10 No.TerminalName 1Feeding/GNG 2GND Application: WLAN,802.11b/g,Bluetooth,WLAN,etc... Features SMD,highreliability,ultraImpact,Omni-directional... PartnumberInformation RANT2012F245X5 (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=5 ElectricalSpecification WorkingFrequencyRange2400~2484MHz Bandwidth84(Min.) PeakGain2.0dBi(Typ.) Impedance50Ohm Returnloss10dB(Min) PolarizationLinear AzimuthBeamwidthOmni-directional OperationTemperature( °C )-40~85 °C ResistancetoSolderingHeats 10sec.(@280°C) TerminationNi/Au(Leadless) ThespecificationisdefinedonEVB. DimensionandTerminalConfiguration RAINInternationalTechnologyCo.,Ltd.TEL:13530576606 2.4GHz2012ChipAntenna:RANT2012F245X5 EvaluationBoardReference PCBDimensionAntennaLayoutReference Unit: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% PeakGain1.72dBi1.95dBi1.69dBi Directivity2.26dBi2.69dBi2.11dBi 2.4GHz2012ChipAntenna:RANT2012F245X5 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:RANT2012F245X5 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:RANT2012F245X5 2.4GHz2012ChipAntenna:RANT2012F245X5 _ 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

Request for Confidentiality Letter MS-0044715 Page 1 of 1 Revision 0 You Tec Ltd. Date: 2023-03-29 Subject: Confidentiality Request for FCC ID: 2A2KIWIRTWSBKPRM Pursuant to FCC 47 CRF 0.457(d) and 0.459 and IC RSP-100, Section 10, the applicant requests that a part of the subject FCC/IC application be held confidential. Type of Confidentiality Requested Exhibit Short Term Permanent Block Diagrams Short Term Permanent Internal Photos Short Term Permanent Operation Description/Theory of Operation Short Term Permanent Tune-Up Procedure Short Term Permanent Schematics Short Term Permanent User’s Manual Short Term n/a Test Setup Short Term n/a External Photos Short Term Permanent Part List/ Antenna Construction You Tec Ltd. has spent substantial effort in developing this product and it is one of the first of its kind in industry. Having the subject information easily available to "competition" would negate the advantage they have achieved by developing this product. Not protecting the details of the design will result in financial hardship. Permanent Confidentiality: The applicant requests the exhibits listed above as permanently confidential be permanently withheld from public review due to materials that contain trade secrets and proprietary information not customarily released to the public. Short-Term Confidentiality: The applicant requests the exhibits selected above as short term confidential be withheld from public view for a period of 180 days from the date of the Grant of Equipment Authorization and prior to marketing. This is to avoid premature release of sensitive information prior to marketing or release of the product to the public. Applicant is also aware that they are responsible to notify TUV Rheinland in the event information regarding the product or the product is made available to the public. TUV Rheinland will then release the documents listed above for public disclosure pursuant to FCC Public Notice DA 04-1705. Sincerely, By: _________________________________ Cornel Nicolae Calin / Head of Production (Signature) (Print name/Title)

Fa mi ly Certi ficatio n Co nfirmati on W e , Y o u T e c L t d., h e r e b y c o n f i r m t h a t t h e f a m i l y m o d e l s a re l i s t e d i n b e l o w t a b l e : No. F C C I D M o d e l R e m a r k 01 2 A 2 K I W I R T W S B K P R M W I R T W S G R P R M W I R T W S B K P R M 1 , T h e s e p r o d u c ts a r e d i f f e r e n c e o n t h e c o l o u r o n l y , o n e i s g reen a n d a n o t h e r i s b l a c k . 2 , T h e p r o d u c t i s a T W S E a rb u d s, t h e l e f t a n d r i g h t e a r p h o n e s c i r c u i t d i a g r a m, P C B l a y o u t a n d a n t e n n a a r e i d e n t i c a l . S i g n a t u r e : P r i n t N a m e / T i t l e : C o r n e l N i c o l a e C a l i n/H e a d o f P r o d u c t i o n D a t e : 01-31-2 0 2 3

Safety Human Exposure 1.1 Radio Frequency Exposure Compliance 1.1.1 Electromagnetic Fields RESULT: Pass Report No. : CN23OM8W 003 Test Specification Test item : True Wireless Stereo Earbuds Identification / Type No. : WIRTWSGRPRM, WIRTWSBKPRM Note: The product difference on the color only. FCC ID : 2A2KIWIRTWSBKPRM Test standard : CFR47 FCC Part 2: Section 2.1093 FCC KDB Publication 447498 v06 Measurement Record: The minimum distance for the EUT is less than 5mm. Since maximum peak output power of the transmitter is 2.50 dBm ≈ 1.78 mW < 3*d f = 9.52 mW. Hence the EUT is excluded from SAR evaluation according to FCC KDB Publication 447498 D01 General RF Exposure Guidance v06.

Prüfbericht - Produkte Test Report - Products Prüfbericht-Nr.: Test report no.: CN23OM8W 002 Auftrags-Nr.: Order no.: 168412847 Seite 1 von 24 Page 1 of 24 Kunden-Referenz-Nr.: Client reference no.: N/A Auftragsdatum: Order date: 2023-01-31 Auftraggeber: Client: You Tec Ltd Santok House Unit L, Braintree Industrial Estate, Braintree Road, South Ruislip, Middlesex, United Kingdom Prüfgegenstand: Test item: True Wireless Stereo Earbuds Bezeichnung / Typ-Nr.: Identification / Type no.: WIRTWSGRPRM, WIRTWSBKPRM Auftrags-Inhalt: Order content: Test Report Prüfgrundlage: Test specification: CFR47 FCC Part 15: Subpart C Section 15.247 Wareneingangsdatum: Date of sample receipt: 2023-02-06 Please refer to Photo Document Prüfmuster-Nr.: Test sample no: A003405040-002 Prüfzeitraum: Testing period: 2023-02-08 – 2023-02-17 Ort der Prüfung: Place of testing: TÜV Rheinland (Shenzhen) Co., Ltd. Prüflaboratorium: Testing laboratory: TÜV Rheinland (Shenzhen) Co., Ltd. Prüfergebnis*: Test result*: Pass geprüft von: tested by: genehmigt von: authorized by: Datum: Date: 2023-02-24 Ausstellungsdatum: Issue date: 2023-02-24 Stellung / Position: Senior Project Manager Stellung / Position: Reviewer Sonstiges / Other: FCC ID: 2A2KIWIRTWSBKPRM Zustand des Prüfgegenstandes bei Anlieferung: Condition of the test item at delivery: Prüfmuster vollständig und unbeschädigt Test item complete and undamaged * Legende: 1 = sehr gut 2 = gut 3 = befriedigend 4 = ausreichend 5 = mangelhaft P(ass) = entspricht o.g. Prüfgrundlage(n) F(ail) = entspricht nicht o.g. Prüfgrundlage(n) N/A = nicht anwendbar N/T = nicht getestet * Legend: 1 = very good 2 = good 3 = satisfactory 4 = sufficient 5 = poor P(ass) = passed a.m. test specification(s) F(ail) = failed a.m. test specification(s) N/A = not applicable N/T = not tested Dieser Prüfbericht bezieht sich nur auf das o.g. Prüfmuster und darf ohne Genehmigung der Prüfstelle nicht auszugsweise vervielfältigt werden. Dieser Bericht berechtigt nicht zur Verwendung eines Prüfzeichens. This test report only relates to the a. m. test sample. Without permission of the test center this test report is not permitted to be duplicated in extracts. This test report does not entitle to carry any test mark. TÜV Rheinland (Shenzhen) Co., Ltd. 1601 R&D Room, 1602-1604, 17-18F, Building 7 Site C, Vanke Cloud City Phase I, Xingke First Street, Xili Street, Xili Community, Nanshan District, Shenzhen 518052, P.R. China Mail: [email protected] · Web: www.tuv.com jjj Lin Lin Bell Hu Prüfbericht - Produkte Test Report - Products Prüfbericht - Nr.: Test Report No.: CN23OM8W 002 Seite 2 von 24 Page 2 of 24 Test Summary 5.1.1 ANTENNA REQUIREMENT RESULT: Pass 5.1.2 MAXIMUM PEAK CONDUCTED OUTPUT POWER RESULT: Pass 5.1.3 99% BANDWIDTH RESULT: Pass 5.1.4 20DB BANDWIDTH RESULT: Pass 5.1.5 CARRIER FREQUENCY SEPARATION RESULT: Pass 5.1.6 NUMBER OF HOPPING FREQUENCY RESULT: Pass 5.1.7 TIME OF OCCUPANCY RESULT: Pass 5.1.8 CONDUCTED SPURIOUS EMISSIONS MEASURED IN 100 KHZ BANDWIDTH RESULT: Pass 5.1.9 RADIATED SPURIOUS EMISSION RESULT: Pass 5.1.10 CONDUCTED EMISSION ON AC MAINS RESULT: Pass Prüfbericht - Produkte Test Report - Products Prüfbericht - Nr.: Test Report No.: CN23OM8W 002 Seite 3 von 24 Page 3 of 24 Contents 1 GENERAL REMARKS ........................................................................................................................... 4 1.1 COMPLEMENTARY MATERIALS ............................................................................................................ 4 2 TEST SITES ........................................................................................................................................ 5 2.1 TEST FACILITIES ................................................................................................................................. 5 2.2 LIST OF TEST AND MEASUREMENT INSTRUMENTS................................................................................. 5 2.3 TRACEABILITY .................................................................................................................................... 6 2.4 CALIBRATION ..................................................................................................................................... 6 2.5 MEASUREMENT UNCERTAINTY............................................................................................................. 6 2.6 LOCATION OF ORIGINAL DATA ............................................................................................................. 6 2.7 STATUS OF FACILITY USED FOR TESTING ............................................................................................. 7 3 GENERAL PRODUCT INFORMATION ...................................................................................................... 8 3.1 PRODUCT FUNCTION AND INTENDED USE ............................................................................................. 8 3.2 RATINGS AND SYSTEM DETAILS .......................................................................................................... 8 3.3 INDEPENDENT OPERATION MODES ...................................................................................................... 9 3.4 NOISE GENERATING AND NOISE SUPPRESSING PARTS ......................................................................... 9 3.5 SUBMITTED DOCUMENTS...................................................................................................................10 4 TEST SET-UP AND OPERATION MODES ..............................................................................................11 4.1 PRINCIPLE OF CONFIGURATION SELECTION .......................................................................................11 4.2 TEST OPERATION AND TEST SOFTWARE ............................................................................................11 4.3 SPECIAL ACCESSORIES AND AUXILIARY EQUIPMENT ..................................................................…

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

Prüfbericht - Produkte Test Report - Products Appendix A CN23OM8W 002 Page 1 of 59 Appendix A: Test Results of FCC Part 15C APPENDIX A: TEST RESULTS OF FCC PART 15C ............................................................................................................... 1 APPENDIX A.1: TEST RESULTS OF 99% BANDWIDTH ................................................................................................................... 2 BR mode (GFSK) ............................................................................................................................................................ 2 EDR mode (8DPSK) ....................................................................................................................................................... 5 APPENDIX A.2: TEST RESULTS OF 20DB BANDWIDTH ................................................................................................................. 8 BR mode (GFSK) ............................................................................................................................................................ 8 EDR mode (8DPSK) ..................................................................................................................................................... 11 APPENDIX A.3: TEST RESULTS OF CARRIER FREQUENCY SEPARATION ........................................................................................... 14 BR mode (GFSK) .......................................................................................................................................................... 14 EDR mode (8DPSK) ..................................................................................................................................................... 17 APPENDIX A.4: TEST RESULTS OF NUMBER OF HOPPING FREQUENCY .......................................................................................... 20 BR mode (GFSK) .......................................................................................................................................................... 20 EDR mode (8DPSK) ..................................................................................................................................................... 21 APPENDIX A.5: TEST RESULTS OF TIME OF OCCUPANCY............................................................................................................. 22 BR mode (GFSK) .......................................................................................................................................................... 22 EDR mode (8DPSK) ..................................................................................................................................................... 25 APPENDIX A.6: TEST RESULTS OF CONDUCTED SPURIOUS EMISSIONS MEASURED IN 100 KHZ BANDWIDTH ...................................... 28 BR mode (GFSK) .......................................................................................................................................................... 28 Low Channel................................................................................................................................................................ 28 Middle Channel ........................................................................................................................................................... 29 High Channel ............................................................................................................................................................... 30 Band Edge, Low Channel............................................................................................................................................. 31 Band Edge, High Channel ............................................................................................................................................ 31 Hopping Mode ............................................................................................................................................................ 32 Band Edge, Hopping Mode, Low Channel ................................................................................................................... 33 Band Edge, Hopping Mode, High Channle .................................................................................................................. 33 EDR mode (8DPSK) ..................................................................................................................................................... 34 Low Channel................................................................................................................................................................ 34 Middle Channel ........................................................................................................................................................... 35 High Channel ............................................................................................................................................................... 36 Band Edge, Low Channel............................................................................................................................................. 37 Band Edge, High Channel ............................................................................................................................................ 37 Hopping Mode ............................................................................................................................................................ 38 Band Edge, Hopping Mode, Low Channel ................................................................................................................... 39 Band Edge, Hopping Mode, High Channle .................................................................................................................. 39 APPENDIX A.7: TEST RESULTS OF RADIATED SPURIOUS EM…

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

Prüfbericht - Produkte Test Report - Products Appendix B CN23OM8W 002 Page 1 of 3 Appendix B: Photographs of the Test Set-Up APPENDIX B: PHOTOGRAPHS OF THE TEST SET-UP ....................................................................................................... 1 PHOTOGRAPH 1: SET-UP PHOTO FOR RADIATED SPURIOUS EMISSION, BELOW 1GHZ ......................................................................... 2 PHOTOGRAPH 2: SET-UP PHOTO FOR RADIATED SPURIOUS EMISSION, ABOVE 1GHZ ......................................................................... 2 PHOTOGRAPH 3: SET-UP PHOTO FOR CONDUCTED EMISSION ON AC MAINS ..................................................................................... 3 Prüfbericht - Produkte Test Report - Products Appendix B CN23OM8W 002 Page 2 of 3 Photograph 1: Set-up photo for Radiated Spurious Emission, Below 1GHz Photograph 2: Set-up photo for Radiated Spurious Emission, Above 1GHz Prüfbericht - Produkte Test Report - Products Appendix B CN23OM8W 002 Page 3 of 3 Photograph 3: Set-up photo for Conducted Emission on AC Mains