2AOKB-A3959LWireless 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-A3959L 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. 27, 2024 Title: Compliance Manager Date: Feb. 27, 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

Anker Innovations Limited Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Feb. 27, 2024 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AOKB-A3959L FRN: 0027073105 [Anker Innovations Limited] (“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, (Applicant signature) (Louis Qi)

Anker Innovations Limited Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: Feb. 27, 2024 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AOKB-A3959L FRN: 0027073105 [Anker Innovations Limited] (“the applicant”) certifies 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. Sincerely, (Applicant signature) (Louis Qi)

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: A3959L FCC Identifier: 2AOKB-A3959L 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. 27, 2024 Title: General Manager Signature of applicant:

Anker Innovations Limited Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Long/Short-term Confidentiality Request Federal Communications CommissionDate: Feb. 27, 2024 445 12 th Street SW Washington, DC 20554 FCC ID:2AOKB-A3959L To Whom it may concerns, Pursuant to sections 0.457(d) and 0.459 of CFR 47 and to avoid premature release of sensitive information prior to marketing or release of the product to the public, we hereby requests long-term confidential treatment of information accompanying this application as outlined below: Schematics Block Diagram Operational Description Parts List Tune-Up Info In addition we hereby request the following exhibits contained in this application to be temporarily (short-term confidentilality) withheld from the public disclosure for an initial period of 180daysuntil:not applicable External PhotosTest Setup Photos Internal PhotosUsers Manual The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these matters might be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to rule 0.457(d), disclosure of this application and all accompanying documentation will not be made before the date of the GRANT for this application. If you have any questions, please feel free to contact me. Yours sincerely, Signatory Contact person: Louis Qi Title: General Manager

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 37 SAR Test Report Report No.: AGC01110240152FH01 FCC ID : 2AOKB-A3959L APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Wireless Headphone BRAND NAME : soundcore MODEL NAME : A3959L APPLICANT : Anker Innovations Limited DATE OF ISSUE : Mar. 20, 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.: AGC01110240152FH01 Page 2 of 37 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Mar. 20, 2024 Valid Initial Release Report No.: AGC01110240152FH01 Page 3 of 37 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 A3959L EUT Voltage DC3.85V 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. 18, 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. 20, 2024 Reviewed By Calvin Liu (Reviewer) Mar. 20, 2024 Approved By Max Zhang (Authorized Officer) Mar. 20, 2024 Report No.: AGC01110240152FH01 Page 4 of 37 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 MEASUREMENT…

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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%)

3 I: The report of passive data Angilent E5071C S11 parameter（Free space）： 4 S11 parameter（Headform）： 5 Efficiency： Free space Frequency （MHz） Gain (dBi) Efficiency (dB ) Efficiency 2400 -3.51 -6.13 24.38% 2410 -3.30 -5.91 25.63% 2420 -3.06 -5.68 27.03% 2430 -2.93 -5.67 27.13% 2440 -2.87 -5.70 26.94% 2450 -2.65 -5.54 27.95% 2460 -2.74 -5.64 27.30% 2470 -2.54 -5.43 28.65% 2480 -2.46 -5.26 29.76% 2490 -2.67 -5.51 28.09% 2500 -2.83 -5.70 26.93% Average value -2.87 -5.65 27.25% Headform Frequency （MHz） Gain (dBi) Efficiency (dB ) Efficiency 2400 -4.81 -12.33 5.85% 2410 -4.65 -12.15 6.10% 2420 -4.57 -11.99 6.32% 2430 -4.77 -12.10 6.17% 2440 -4.98 -12.26 5.94% 2450 -4.96 -12.20 6.03% 2460 -5.16 -12.36 5.81% 2470 -5.13 -12.18 6.05% 2480 -5.24 -12.05 6.24% 2490 -5.70 -12.38 5.79% 2500 -5.96 -12.59 5.51% Average value -5.09 -12.23 5.98% 6 Antenna radiation pattern（Free space）: Theta=90.00deg Phi=90.00deg Phi=0.00deg 7 Antenna radiation pattern（Headform）: Theta=90.00deg Phi=90.00deg Phi=0.00deg 8 3D Antenna radiation pattern（Free space）: 3D Antenna radiation pattern（Headform）: 9 II：3D Active test report of antenna Free space Channel TRP（dBm） TIS（dBm） L CH 0 -0.2 -86.5 CH 39 1.0 -88.4 CH 78 -1.2 -87.4 Headform Channel TRP（dBm） TIS（dBm） L CH 0 -1.1 -85.8 CH 39 -2.8 -85.1 CH 78 -3.9 -84.5 OTA Standard Chamber 10 III：Structure file

Page 1 of 82 FCC Test Report Report No.: AGC01110240152FR02 FCC ID : 2AOKB-A3959L APPLICATION PURPOSE : Original Equipment PRODUCT DESIGNATION : Wireless Headphone BRAND NAME : soundcore MODEL NAME : A3959L APPLICANT : Anker Innovations Limited DATE OF ISSUE : Feb. 22, 2024 STANDARD(S) : FCC Part 15 Subpart C §15.247 REPORT VERSION : V1.0 Attestation of Global Compliance (Shenzhen) Co., Ltd Report No.: AGC01110240152FR02 Page 2 of 82 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0 / Feb. 22, 2024 Valid Initial Release Report No.: AGC01110240152FR02 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.: AGC01110240152FR02 Page 69 of 82 Band Edge Emission Test Results for Restricted Bands EUT Name Wireless Headphone Model Name A3959L 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.: AGC01110240152FR02 Page 70 of 82 Band Edge Emission Test Results for Restricted Bands EUT Name Wireless Headphone Model Name A3959L 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.: AGC01110240152FR02 Page 71 of 82 Band Edge Emission Test Results for Restricted Bands EUT Name Wireless Headphone Model Name A3959L 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.: AGC01110240152FR02 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.: AGC01110240152FR02 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.: AGC01110240152FR02 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 Dwell Time (ms) Limit (ms) Pass or Fail 2402 2.892 29.0*4 335.472 400 Pass 2441 2.892 27.0*4 312.336 400 Pass 2480 2.892 31.0*4 358.608 400 Pass Report No.: AGC01110240152FR02 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.: AGC01110240152FR02 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.: AGC01110240152FR02 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.: AGC01110240152FR02 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 1.005 ≥0.864 Pass Report No.: AGC01110240152FR02 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.: AGC01110240152FR02 Page 80 of …

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