2AOKB-A3958RWireless Headphone

Anker Innovations Limited 2.911 (d)(7)USA Agent v1.2 Section 2 .911(d)(7) USA Agent for Service of Process Company name: Anker Innovations Limited Address: Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong FRN: 0027073105 FCC ID: 2AOKB-A3958R 2.911(d)(7) USA Designated Agent for Service of Process We, [Anker Innovations Limited] (“the applicant”) designate [Fantasia Trading LLC] NOTE1 for the purpose of accepting service of process on behalf of the applicant. Applicant consent:We Acknowledge our consent to accept service of process in the United States for matters related to the applicable equipment, and at the physical U.S. address and email address of the designated agent and acknowledge our acceptance of our obligation to maintain an agent for 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. Agent obligation:We Acknowledge our obligation to accept service of process in the United States for matters related to the applicable equipment at our physical U.S. address and email address 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. USA Agent Company name: Fantasia Trading LLC Address: 5350 Ontario Mills Pkwy, STE 100, Ontario, CA 91764, United States FRN: 0033423005 Contact Name: Louis Qi Telephone No: +1 (800)988 7973 Email: [email protected] Applicant Company name: Anker Innovations Limited Address: Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Grantee Code: 2AOKB Contact Name: Louis.qi Telephone No: +86-755-86544807 Email:[email protected] Signature: Signature: Title:Compliance Manager Date:Feb. 28, 2024 Title: Compliance Manager Date: Feb. 28, 2024 NOTE 1: An applicant located in the United States may designate itself as the agent for service of process. Reference; 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-th e-communications-supply-chain-through-the

AnkerInnovationsLimited Room1318-19,HollywoodPlaza,610 NathanRoad,Mongkok,Kowloon,Hongkong FederalCommunicationsCommission Authorizationand EvaluationDivision 7435OaklandMillsRoad Columbia,MD 21046 USA Date:Feb. 28, 2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AOKB-A3958R FRN: 0027073105 [AnkerInnovationsLimited] (“the applicant”) certifiesthat the equipmentfor whichauthorizationis soughtis not“covered” equipmentprohibitedfromreceivingan equipmentauthorizationpursuantto section2.903of the FCC rules. Sincerely, (Applicantsignature) (LouisQi)

AnkerInnovationsLimited Room1318-19,HollywoodPlaza,610 NathanRoad,Mongkok,Kowloon,Hongkong FederalCommunicationsCommission Authorizationand EvaluationDivision 7435OaklandMillsRoad Columbia,MD 21046 USA Date:Feb. 28, 2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AOKB-A3958R FRN: 0027073105 [AnkerInnovationsLimited](“the applicant”) certifiesthat,as of the dateof the filingof the application, the applicantis notidentifiedon the CoveredList as an entityproducing“covered” equipment. Sincerely, (Applicantsignature) (LouisQi)

C5266091_X8_Ed.1 1/1 Letter of Authorization Company: Anker Innovations Limited Address: Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Product Name: Wireless Headphone Model Number: A3958R FCC Identifier: 2AOKB-A3958R 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: Louis Qi Date: Feb. 28, 2024 Title: General Manager Signature of applicant:

Anker InnovationsLimited Room1318-19,HollywoodPlaza,610 NathanRoad,Mongkok,Kowloon,Hongkong Long/Short-termConfidentialityRequest FederalCommunicationsCommissionDate: Feb. 28, 2024 445 12 th StreetSW Washington,DC 20554 FCC ID:2AOKB-A3958R To Whomit may concerns, Pursuantto sections0.457(d)and 0.459of CFR 47 and to avoid prematurereleaseof sensitiveinformationprior to marketingor releaseof the productto the public,we hereby requestslong-termconfidentialtreatmentof informationaccompanyingthis applicationas outlinedbelow: SchematicsPartsList BlockDiagramTune-UpInfo OperationalDescriptionAntennaSpecificationFCC_Confidential In additionwe herebyrequestthe followingexhibitscontainedin this applicationto be temporarily(short-termconfidentilality)withheldfrom the publicdisclosure for an initial periodof 180daysuntil:not applicable ExternalPhotosTestSetupPhotos InternalPhotosUsersManual The abovematerialscontaintrade secretsand proprietaryinformationnot customarily releasedto the public.The publicdisclosureof thesemattersmightbe harmfulto the applicantand provideunjustifiedbenefitsto its competitors. The applicantunderstandsthat pursuantto rule 0.457(d),disclosureof this applicationand all accompanyingdocumentationwill not be made beforethe date of the GRANTfor this application. If you have any questions,pleasefeel free to contactme. Yourssincerely, Signatory Contactperson:Louis Qi Title: GeneralManager

FCC ID Label Location The product does not have enough space to place the label, and FCC ID is reflected in the user manual. User manual as below:

CALIBRATION DATA PROBE CALIBRATION DATA DAE CALIBRATION DATA DIPOLE CALIBRATION DATA

Page 1 of 39 SAR Test Report Report No.: AGC01110240159FH01 FCC ID : 2AOKB-A3958R APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Wireless Headphone BRAND NAME : soundcore MODEL NAME : A3958R APPLICANT : Anker Innovations Limited DATE OF ISSUE : Mar. 19, 2024 STANDARD(S) : IEEE Std. 1528:2013 FCC 47 CFR Part 2§2.1093 IEEE Std C95.1 ™-2005 REPORT VERSION : V1.0 Attestation of Global Compliance(Shenzhen) Co., Ltd. Report No.: AGC01110240159FH01 Page 2 of 39 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Mar. 19, 2024 Valid Initial Release Report No.: AGC01110240159FH01 Page 3 of 39 Test Report Applicant Name Anker Innovations Limited Applicant Address Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Manufacturer Name Anker Innovations Limited Manufacturer Address Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Factory Name N/A Factory Address N/A Product Designation Wireless Headphone Brand Name soundcore Model Name A3958R EUT Voltage DC 3.85V by battery Applicable Standard IEEE Std. 1528:2013 FCC 47 CFR Part 2§2.1093 IEEE Std C95.1 ™-2005 Date of receipt of test item Mar. 11, 2024 Test Date Mar. 15, 2024 Report Template AGCRT-US-Bluetooth/SAR (2021-04-20) Note: The results of testing in this report apply to the product/system which was tested only. Prepared By Thea Huang (Project Engineer) Mar. 19, 2024 Reviewed By Calvin Liu (Reviewer) Mar. 19, 2024 Approved By Max Zhang (Authorized Officer) Mar. 19, 2024 Report No.: AGC01110240159FH01 Page 4 of 39 TABLE OF CONTENTS 1. SUMMARY OF MAXIMUM SAR VALUE ......................................................................................................... 5 2. GENERAL INFORMATION ............................................................................................................................... 6 2.1. EUT DESCRIPTION......................................................................................................................................... 6 3. SAR MEASUREMENT SYSTEM ........................................................................................................................ 7 3.1. THE DASY5 SYSTEM USED FOR PERFORMING COMPLIANCE TESTS CONSISTS OF FOLLOWING ITEMS .................... 7 3.2. DASY5 E-FIELD PROBE ................................................................................................................................. 8 3.3. DATA ACQUISITION ELECTRONICS DESCRIPTION ............................................................................................... 8 3.4. ROBOT .......................................................................................................................................................... 9 3.5. LIGHT BEAM UNIT .......................................................................................................................................... 9 3.6. DEVICE HOLDER .......................................................................................................................................... 10 3.7. MEASUREMENT SERVER ............................................................................................................................... 10 3.8. PHANTOM ................................................................................................................................................. 11 4. SAR MEASUREMENT PROCEDURE .............................................................................................................. 12 4.1. SPECIFIC ABSORPTION RATE (SAR) .............................................................................................................. 12 4.2. SAR MEASUREMENT PROCEDURE ................................................................................................................ 13 4.3. RF EXPOSURE CONDITIONS ......................................................................................................................... 15 5. TISSUE SIMULATING LIQUID ......................................................................................................................... 16 5.1. THE COMPOSITION OF THE TISSUE SIMULATING LIQUID..................................................................................... 16 5.2. TISSUE DIELECTRIC PARAMETERS FOR HEAD AND BODY PHANTOMS ............................................................... 16 5.3. TISSUE CALIBRATION RESULT ....................................................................................................................... 17 6. SAR SYSTEM CHECK PROCEDURE ........................................................................................................... 18 6.1. SAR SYSTEM CHECK PROCEDURES ............................................................................................................. 18 6.2. SAR SYSTEM CHECK ................................................................................................................................... 19 7. EUT TEST POSITION ...................................................................................................................................... 21 7.1. TEST POSITION ............................................................................................................................................ 21 8. SAR EXPOSURE LIMITS ............................................................................................................................... 22 9. TEST FACILITY .............................................................................................................................................. 23 10. TEST EQUIPMENT LIST .............................................................................................................................. 24 11. MEASUREMENT UNCERTAINTY ................................................................................................................ 25 12. CONDUCTED POWER MEASUREMEN…

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Impedance Plot for SN 29/15 DIP 2G450-393 2450 Head Calibrated impedance：52.3Ω+3.4jΩ；Measurement impedance:55.8Ω+1.6 jΩ(within 5Ω) Calibrated return loss：-27.80dB；Measurement return loss: -24.53dB(within 20%)

1 Antenna Part Specification Customers： Cosonic Intelligent Technologies Co.，Ltd. Project name： A3958 Material category： LDS Antenna type： LDS Antenna Version： V3.0 Date： 2024.03.01 Manufacturer Address： 505-506 ,ABlock,Donglian Building,Chuangye 2 road,Baoan District,Shenzhen,Guangdong,P.R china 2 Contents I：The report of passive data .................................................................................................... 3 II：3D Active test report of antenna ...................................................................................... 9 III：Matching circuit .............................................................................................................. 10 IV：Structure file .................................................................................................................... 11 Change record Compile / change date Reason for change Changed content Version 2024.01.06 First edition First edition V1.0 2024.01.25 Antenna optimization Change FPC cable layout and correct antenna frequency offset V2.0 2024.03.01 Antenna fine-tuning Increase Touch area V3.0 3 I：The report of passive data Angilent E5071C VSWR(S11) parameter（L）： 4 VSWR(S11) parameter（R）： 5 Efficiency： L Frequency （MHz） Gain (dBi) Efficiency (dB ) Efficiency Maximum gain (dBi) 2400 -5.4 -7.2 19.2 -4.9 2410 -5.2 -7.0 20.1 2420 -5.2 -6.8 20.7 2430 -5.0 -6.6 21.7 2440 -4.9 -6.7 21.5 2450 -4.9 -6.5 22.2 2460 -5.1 -6.5 22.3 2470 -5.7 -6.9 20.4 2480 -6.2 -7.3 18.6 Average value -5.3 -6.8 20.7 R Frequency （MHz） Gain (dBi) Efficiency (dB ) Efficiency Maximum gain (dBi) 2400 -6.7 -7.4 18.2 -5.4 2410 -6.2 -7.1 19.7 2420 -5.8 -6.9 20.4 2430 -5.7 -6.8 20.8 2440 -5.5 -6.7 21.5 2450 -5.5 -6.8 21.1 2460 -5.4 -6.7 21.4 2470 -5.4 -6.7 21.3 2480 -5.9 -7.1 19.3 Average value -5.8 -6.9 20.4 6 3D Antenna radiation pattern（2.4GHz(dBi)L）: 3D Antenna radiation pattern2.4GHz(dBi)（R）: 7 2D Antenna radiation pattern(dBi)（L）: Theta=90.00deg Phi=90.00deg Phi=0.00deg 8 2D Antenna radiation pattern(dBi)（R）: Theta=90.00deg Phi=90.00deg Phi=0.00deg 9 II：3D Active test report of antenna L Channel TRP（dBm） TIS（dBm） free space CH 0 -0.6 -85.3 CH 39 0.7 -87.7 CH 78 0.2 -87.1 L Channel TRP（dBm） TIS（dBm） headform CH 0 -4.0 -81.9 CH 39 -3.5 -82.8 CH 78 -5.4 -81.6 R Channel TRP（dBm） TIS（dBm） free space CH 0 -1.1 -85.2 CH 39 0.5 -87.7 CH 78 0.4 -87.7 R Channel TRP（dBm） TIS（dBm） headform CH 0 -4.2 -82.1 CH 39 -3.4 -83.1 CH 78 -4.9 -82.3 OTA Standard Chamber 10 III：Matching circuit L-matching circuit Left ear C82 changed to 1.8pF R-matching circuit Right ear C82 changed to 2.2pF 11 IV：Structure file 12

Page 1 of 82 FCC Test Report Report No.: AGC01110240159FR02 FCC ID : 2AOKB-A3958R APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Wireless Headphone BRAND NAME : soundcore MODEL NAME : A3958R APPLICANT : Anker Innovations Limited DATE OF ISSUE : Feb. 27, 2024 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC01110240159FR02 Page 2 of 82 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Feb. 27, 2024 Valid Initial Release Report No.: AGC01110240159FR02 Page 3 of 82 Table of Contents 1. General Information ........................................................................................................................................ 5 2. Product Information ........................................................................................................................................ 6 2.1 Product Technical Description ................................................................................................................... 6 2.2 Test Frequency List ................................................................................................................................... 6 2.3 Related Submittal(S) / Grant (S) ............................................................................................................... 7 2.4 Test Methodology ...................................................................................................................................... 7 2.5 Receiver Input Bandwidth ......................................................................................................................... 7 2.6 Equally Average Use of Frequencies And Behaviour ............................................................................... 7 2.7 Pseudorandom Frequency Hopping Sequence ........................................................................................ 8 2.8 Special Accessories .................................................................................................................................. 9 2.9 Equipment Modifications ........................................................................................................................... 9 2.10 Antenna Requirement ............................................................................................................................. 9 3. Test Environment .......................................................................................................................................... 10 3.1 Address of The Test Laboratory .............................................................................................................. 10 3.2 Test Facility .............................................................................................................................................. 10 3.3 Environmental Conditions ....................................................................................................................... 11 3.4 Measurement Uncertainty ....................................................................................................................... 11 3.5 List of Equipment Used ........................................................................................................................... 12 4.System Test Configuration ............................................................................................................................ 14 4.1 EUT Configuration ................................................................................................................................... 14 4.2 EUT Exercise ........................................................................................................................................... 14 4.3 Configuration of Tested System .............................................................................................................. 14 4.4 Equipment Used In Tested System ........................................................................................................ 14 4.5 Summary of Test Results ........................................................................................................................ 15 5. Description of Test Modes ........................................................................................................................... 16 6. RF Output Power Measurement .................................................................................................................. 17 6.1 Provisions Applicable .............................................................................................................................. 17 6.2 Measurement Procedure ......................................................................................................................... 17 6.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 17 6.4 Measurement Result ............................................................................................................................... 18 7. 20dB Bandwidth and 99% Occupied Bandwidth Measurement ............................................................... 24 7.1 Provisions Applicable .............................................................................................................................. 24 7.2 Measurement Procedure ......................................................................................................................... 24 7.3 Measurement Setup (Block Diagram of Configuration) .......................................................................... 24 7.4 Measurement Results ............................................................................................................................. 25 8. Conducted Band Edge and Out-of-Band Emissions ................................…

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Report No.: AGC01110240159FR02 Page 69 of 82 Band Edge Emission Test Results for Restricted Bands EUT Name Wireless Headphone Model Name A3958R Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage DC 3.85V by battery Test Mode Mode 7 Antenna Polarity Vertical Test Graph for Peak Measurement Test Graph for Average Measurement RESULT: Pass Report No.: AGC01110240159FR02 Page 70 of 82 Band Edge Emission Test Results for Restricted Bands EUT Name Wireless Headphone Model Name A3958R Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage DC 3.85V by battery Test Mode Mode 9 Antenna Polarity Horizontal Test Graph for Peak Measurement Test Graph for Average Measurement RESULT: Pass Report No.: AGC01110240159FR02 Page 71 of 82 Band Edge Emission Test Results for Restricted Bands EUT Name Wireless Headphone Model Name A3958R Temperature 25°C Relative Humidity 55.4% Pressure 960hPa Test Voltage DC 3.85V by battery Test Mode Mode 9 Antenna Polarity Vertical Test Graph for Peak Measurement Test Graph for Average Measurement RESULT: Pass Note: The factor had been edited in the “Input Correction” of the Spectrum Analyzer. Report No.: AGC01110240159FR02 Page 72 of 82 10. Number of Hopping Frequency Measurement 10.1 Provisions Applicable This frequency hopping system must employ a minimum of 15 hopping channels. 10.2 Measurement Procedure The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span = The frequency band of operation. Depending on the number of channels the device 2. supports, it may be necessary to divide the frequency range of operation across multiple spans, to allow the individual channels to be clearly seen. 3. RBW: To identify clearly the individual channels, set the RBW to less than 30% of the channel spacing or the 20 dB bandwidth, whichever is smaller. 4. VBW ≥ RBW 5. Sweep time = Auto couple 6. Detector = Peak 7. Trace mode = Max hold 8. Allow the trace to stabilize 10.3 Measurement Setup (Block Diagram of Configuration) 10.4 Measurement Result Test Data of Number of Hopping Frequency Test Mode Number of Hopping Frequency Limits Pass or Fail 8DPSK Hopping 79 >=15 Pass Report No.: AGC01110240159FR02 Page 73 of 82 Test Graphs of Number of Hopping Frequency Test_Graph_EDR_HOP_ANT1_NA_3Mbps_Number of Hopping Note: All mode rates are tested and evaluated, 8DPSK modulated 3DH5 mode is the worst case and documented in the report. Report No.: AGC01110240159FR02 Page 74 of 82 11. Time of Occupancy (Dwell Time) Measurement 11.1 Provisions Applicable The maximum permissible time of occupancy is 400ms within a period of 400ms multiplied by the number of hopping channels employed. 11.2 Measurement Procedure The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span = Zero span, centered on a hopping channel. 2. RBW shall be ≤ channel spacing and where possible RBW should be set >> 1 / T, where T is the expected dwell time per channel. 3. VBW ≥ RBW 4. Sweep time = As necessary to capture the entire dwell time per hopping channel 5. Detector = Peak 6. Trace mode = Free Run 7. Use the marker-delta function to determine the transmit time per hop. If this value varies with different modes of operation (data rate, modulation format, number of hopping channels, etc.), then repeat this test for each variation in transmit time. An oscilloscope may be used instead of a spectrum analyzer. The EUT shall show compliance with the appropriate regulatory limit for the number of hopping channels. A plot of the data shall be included in the test report. 11.3 Measurement Setup (Block Diagram of Configuration) 11.4 Measurement Result Test Data of Dwell Time Channel Time of Pulse for 3DH5 (ms) Number of hops in the period specified in the requirements Sweep Time (ms) Limit (ms) Pass or Fail 2402 2.892 23.0*4 266.064 400 Pass 2441 2.892 28.0*4 323.904 400 Pass 2480 2.892 20.0*4 231.360 400 Pass Report No.: AGC01110240159FR02 Page 75 of 82 Test Graphs of Dwell Time Test_Graph_EDR_HOP_ANT1_NA_3Mbps_2402_Number of Busrt Test_Graph_EDR_HOP_ANT1_NA_3Mbps_2402_Time per Burst Report No.: AGC01110240159FR02 Page 76 of 82 Test_Graph_EDR_HOP_ANT1_NA_3Mbps_2441_Number of Busrt Test_Graph_EDR_HOP_ANT1_NA_3Mbps_2441_Time per Burst Report No.: AGC01110240159FR02 Page 77 of 82 Test_Graph_EDR_HOP_ANT1_NA_3Mbps_2480_Number of Busrt Test_Graph_EDR_HOP_ANT1_NA_3Mbps_2480_Time per Burst Note: All mode rates are tested and evaluated, 8DPSK modulated 3DH5 mode is the worst case and documented in the report. Report No.: AGC01110240159FR02 Page 78 of 82 12. Frequency Separation Measurement 12.1 Provisions Applicable When the power is less than 0.125W: The minimum permissible channel separation for this system is 2/3 the value of the 20dB BW. When the power is less than 1W: The minimum permissible channel separation for this system is 20dB BW. 12.2 Measurement Procedure The EUT shall have its hopping function enabled. Use the following spectrum analyzer settings: 1. Span: Wide enough to capture the peaks of two adjacent channels. 2. RBW: Start with the RBW set to approximately 30% of the channel spacing; adjust as necessary to best identify the center of each individual channel. 3. Video (or average) bandwidth (VBW) ≥ RBW. 4. Sweep: Auto. 5. Detector function: Peak. 6. Trace: Max hold. g) Allow the trace to stabilize. 7. Use the marker-delta function to determine the separation between the peaks of the adjacent channels. 12.3 Measurement Setup (Block Diagram of Configuration) 12.4 Measurement Result Test Data of Frequency Separation Test Mode Channel Separation (MHz) Limits (MHz) Pass or Fail 8DPSK Hopping 1.001 ≥0.859 Pass Report No.: AGC01110240159FR02 Page 79 of 82 Test Graphs of Number of Hopping Frequency Test_Graph_EDR_HOP_ANT1_NA_3Mbps_Hopping Separation Note: All mode rates are tested and evaluated, 8DPSK modulated 3DH5 mode is the worst case and documented in the report. Report No.: AGC01110240159FR02 Page 80 of …

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