2AIZN-XE37True Wireless Earbuds

Attestation Statements (January 2, 2025) TO: Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046, USA RE: Attestation Statements Part 2.911(d)(7) request for (GC: 2AIZN) (INFINIX MOBILITY LIMITED), the undersigned, hereby authorize Picus Advisors US LLC to act as our designated U.S. agent for service of process, (INFINIX MOBILITY LIMITED) accepts to maintain an agent 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. Picus Advisors US LLC accepts the responsibility to act as designated U.S. agent for service of process. Applicant Information： Company name: INFINIX MOBILITY LIMITED Contact Name: Jerry Liu Address: FLAT N 16/F BLOCK B UNIVERSAL INDUSTRIAL CENTRE 19-25 SHAN MEI STREET FOTAN NT HONGKONG FRN: 0025707605 Telephone No: +86-0755-61803856 Email: [email protected] Signature [Jerry Liu] U.S. Agent Information: Company Name: Picus Advisors US LLC Address: 839 FM1489 Rd,Brookshire,TEXAS,77423,US FRN:0034336891 Contact Name: Ivan Wang Telephone No: +1(713) 614-8188 Email: [email protected] Signature [lvan Wang]

(INFINIXMOBILITYLIMITED) (September03,2025) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(i)requestfor(FCCID:2AIZN-XE37#) [INFINIXMOBILITYLIMITED](“theapplicant”)certifiesthattheequipmentforwhich authorizationissoughtisnot“covered”equipmentprohibitedfromreceivingan equipmentauthorizationpursuanttosection2.903oftheFCCrules. Wealsocertifythat,asofthedateofthefilingoftheapplication,theequipmentdoes notutilizecyber-securityoranti-virussoftwarefromKasperskyLab,Inc,oranyofits successorsandassignees,whichisalsoonthe“coveredlist”. Sincerely, JerryLiu/Manger (INFINIXMOBILITYLIMITED) (September03,2025) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:AttestationStatementsPart2.911(d)(5)(ii)requestfor(FCCID:2AIZN-XE37#) [INFINIXMOBILITYLIMITED](“theapplicant”)certifiesthat,asofthedateofthefiling oftheapplication,theapplicantisnotidentifiedontheCoveredListasanentity producing“covered”equipment. Sincerely, JerryLiu/Manger

INFINIXMOBILITYLIMITED AgentAuthorizationLetter (September03,2025) EurofinsMETLabs 914WestPatapscoAvenue Baltimore,MD21230 RE:LETTEROFAGENTAUTHORIZATION ToWhomItMayConcern: We,theundersigned,herebyauthorize (WORLDSTANDARDIZATIONCERTIFICATION& TESTINGGROUP(SHENZHEN)CO.,LTD.)toactonourbehalfinallmattersrelatingto applicationforequipmentauthorization,includingthesigningofalldocuments relatingtothesematters. Wealsoherebycertifythatnopartytotheapplicationauthorizedhereunderis subjecttothedenialofbenefits,includingFCCbenefits,pursuanttoSection5301 oftheAnti-DrugAbuseActof1988,21U.S.C.853(a). Thisagreementexpiresoneyearfromthecurrentdate. Sincerely, Client’sname/title:JerryLiu/Manger CompanyName:INFINIXMOBILITYLIMITED Contactinformation/address:[email protected]/FLATN16/FBLOCKB UNIVERSALINDUSTRIALCENTRE19-25SHANMEISTREETFOTANNTHONGKONG.

INFINIXMOBILITYLIMITED LongTermConfidentialityRequestLetter (September03,2025) EurofinsMETLabs 914WestPatapscoAvenue Baltimore,MD21230 RE:CONFIDENTIALITYREQUESTFOR EUTNAME:WirelessMagneticPowerBank ModelNo:XE37 FCCID:2AIZN-XE37 ToWhomItMayConcern: Thisletterservesasanofficialrequestforconfidentialityundersections0.457and0.459of CFR47.Wehaverequestedthatthe -BlockDiagram -Schematics -OperationalDescription requiredtobesubmittedwiththisapplicationbepermanentlywithheldfrompublicreview. Theabove-mentioneddocumentsbelongtointernaldocuments,isourproprietary information,thatcouldnevergetintothepossessionofourcompetition. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, Client’sname/title:JerryLiu/Manger CompanyName:INFINIXMOBILITYLIMITED Contactinformation/address:[email protected]/FBLOCKB UNIVERSALINDUSTRIALCENTRE19-25SHANMEISTREETFOTANNTHONGKONG.

ShortTermConfidentialityRequestLetter (September03,2025) EurofinsElectricalandElectronicTestingNA,Inc. 914WestPatapscoAvenue Baltimore,MD21230 RE:ShortTermConfidentialityRequestFor(TrueWirelessEarbuds/XE37#2AIZN-XE37#) ToWhomItMayConcern: Inaccordancewithsections0.457and0.459ofCFR47,< INFINIXMOBILITYLIMITED >. requestsshort-termConfidentialityoffollowingsectionsofthisapplicationforaperiodof180 daysaftergrantisissued. SetupPhotos Internalphotos Externalphotos User’smanual Thesedocumentscontaindetailedsystemandequipmentdescriptionsandrelated informationabouttheproduct,which<INFINIXMOBILITYLIMITED>considerstobe proprietary,confidential,andacustomdesignandotherwise,wouldnotreleasetothe generalpublic.Sincethisdesignisabasisfromwhichfuturetechnologicalproductswill evolve,<INFINIXMOBILITYLIMITED.>feelsthatthisinformationwouldbeofbenefitto itscompetitors,andthatthedisclosureoftheinformationinthesedocumentswouldgiveour competitorsanunfairadvantageinthemarket. Pleasecontactmeifthereisanyinformationyoumayneed. Sincerely, YitingLuo/Manger Signature:

Label&LabelLocation: FCCID:2AIZN-XE37 Back Front XTD4BL0001 622.29 8 500 bottom

Report No.: WSCT-ANAB-R&E250200011A-15B Page 2 of 23 TABLE OF CONTENTS 1. Test Certification ..................................................................................... 3 2. GENERAL DESCRIPTION OF EUT .......................................................... 4 3. Test Result Summary .............................................................................. 5 4. TEST METHODOLOGY ............................................................................ 6 4.1. CONFIGURATION OF SYSTEM UNDER TEST ................................................................................. 7 4.2. DESCRIPTION OF SUPPORT UNITS (CONDUCTED MODE) .......................................................... 8 5. MEASUREMENT INSTRUMENTS ............................................................ 9 6. Facilities and Accreditations ................................................................ 10 6.1. FACILITIES .......................................................................................................................................... 10 6.2. ACCREDITATIONS .......................................................................................................................... 10 6.3. MEASUREMENT UNCERTAINTY ............................................................................................................. 10 7. EMC EMISSION TEST ............................................................................ 12 7.1. CONDUCTED EMISSION MEASUREMENT .................................................................................... 12 7.2. TEST RESULTS .................................................................................................................................... 14 7.3. RADIATED EMISSION MEASUREMENT ........................................................................................ 16 8. Test Setup Photographs ....................................................................... 23 Report No.: WSCT-ANAB-R&E250200011A-15B Page 4 of 23 2. GENERAL DESCRIPTION OF EUT Product Name: True Wireless Earbuds Model : XE37 Trade Mark: Infinix Operating Voltage Charging Box: 851842 Nominal Voltage: 3.7V Capacity:620mAh/3.7V/2.294Wh Test Voltage 120Vac,60Hz Remark: N/A. Note: 1. N/A stands for no applicable. 2. Antenna gain provided by the applicant Report No.: WSCT-ANAB-R&E250200011A-15B Page 5 of 23 3. Test Result Summary Requirement CFR 47 Section Result CONDUCTED EMISSION §15.107 PASS RADIATED EMISSION §15.109 PASS Note: 1. PASS: Test item meets the requirement. 2. Fail: Test item does not meet the requirement. 3. N/A: Test case does not apply to the test object. 4. The test result judgment is decided by the limit of test standard. Report No.: WSCT-ANAB-R&E250200011A-15B Page 6 of 23 4. TEST METHODOLOGY To investigate the maximum EMI emission characteristics generates from EUT, the test system was pre-scanning tested base on the consideration of following EUT operation mode or test configuration mode which possible have effect on EMI emission level. Each of these EUT operation mode(s) or test configuration mode(s) mentioned above was evaluated respectively. Pretest Mode Description Mode 1 Charging Mode 2 Bluetooth Mode 3 Bluetooth + charging Note: Bluetooth earphones cannot be turned on while charging in the charging compartment. Report No.: WSCT-ANAB-R&E250200011A-15B Page 7 of 23 4.1. CONFIGURATION OF SYSTEM UNDER TEST Mode 1& Mode 3 0.5 m cable AC ADAPTER & Mode 2 (EUT: True Wireless Earbuds) I/O Port of EUT I/O Port Type Q’TY Cable Tested with Power 1 0.5m USB cable, unshielded / Earphone / / / EUT EUT Report No.: WSCT-ANAB-R&E250200011A-15B Page 8 of 23 4.2. DESCRIPTION OF SUPPORT UNITS (CONDUCTED MODE) The EUT has been tested as an independent unit together with other necessary accessories or support units. The following support units or accessories were used to form a representative test configuration during the tests. Item Equipment Mfr/Brand Model/Type No. Series No. Note 1 Adapter / / / / 2 Keyboard / / / / 3 Mouse / / / / Note: (1) The support equipment was authorized by Declaration of Confirmation. (2) For detachable type I/O cable should be specified the length in cm in『Length』 column. Report No.: WSCT-ANAB-R&E250200011A-15B Page 9 of 23 5. MEASUREMENT INSTRUMENTS Kind of Equipment Manufacturer Type No. Serial No. Last Calibrated Calibrated until Test software - EZ-EMC CON-03A - - ESCI Test Receiver R&S ESCI 100005 11/05/2024 11/04/2025 LISN AFJ LS16 16010222119 11/05/2024 11/04/2025 LISN(EUT) Mestec AN3016 04/10040 11/05/2024 11/04/2025 pre-amplifier CDSI PAP-1G18-38 - 11/05/2024 11/04/2025 System Controller CT SC100 - 11/05/2024 11/04/2025 Bi-log Antenna Chase CBL6111C 2576 11/05/2024 11/04/2025 Spectrum analyzer R&S FSU26 200409 11/05/2024 11/04/2025 Horn Antenna SCHWARZBECK 9120D 1141 11/05/2024 11/04/2025 Bi-log Antenna SCHWARZBECK VULB9168 01488 07/29/2024 07/28/2025 Pre Amplifier H.P. HP8447E 2945A02715 11/05/2024 11/04/2025 9*6*6 Anechoic - - - 11/05/2024 11/04/2025 Report No.: WSCT-ANAB-R&E250200011A-15B Page 10 of 23 6. Facilities and Accreditations 6.1. Facilities All measurement facilities used to collect the measurement data are located at World Standardization Certification & Testing Group (Shenzhen) Co., Ltd. Building A-B,Baoli'an Industrial Park,No.58 and 60,Tangtou Avenue, Shiyan Street, Bao'an District, Shenzhen City, Guangdong Province, China. The sites are constructed in conformance with the requirements of ANSI C63.4 and CISPR Publication 22. All receiving equipment conforms to CISPR Publication 16-1, “Radio Interference Measuring Apparatus and Measurement Methods.” 6.2. ACCREDITATIONS ANAB - Certificate Number: AT-3951 The EMC Laboratory has been accredited by the American Association for Laboratory Accreditation (ANAB).Certification Number: AT-3951 6.3. Measurement Uncertainty The reported uncertainty of measurement y ± U, where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=…

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