FCC ID: 2AOKB-A3138 soundcore Boom 2, SOUNDCORE BOOM 2

DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1 SPECIFICATION FOR APPROVAL Component information Customer Material Description Customers Part number ANT.0100016003000 Specifications BT Antenna Ganzhou DHD Technology Co., Ltd A3138 Bluetooth antenna RG1.13 black double tin wire with a length of 180mm, gain of 3.0 0.5dbi, equipped with shock-absorbing sponge L=100mm FPCB Bluetooth antenna and IPEX first generation terminal for environmental protection Suppliers Part number QY023-11C0031A Date 2023/12/13 Supplier Approval Prepared By Zhang Bingxiang Customer approval Accepted By Checked By Wu Qianjin Approved By Luo Daxun Checked By Approved By Recognizing the outcome Full Approval Conditional Approval Unqualified Others:

Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

1 DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1 SPECIFICATION FOR APPROVAL Customer: DHD Brand:

Description: BT Antenna

Qiyuan Specification

/part no:

A3138 Bluetooth antenna RG1.13 black double tin wi re with a length of 180mm, gain of 3.0 0.5dbi, eq uipped with shock-absorbing sponge L=100mm FPCB Bluetooth antenna and IPEX first generation terminal for environmental protection Date:

Remark 2023.12.13 Pleasereturnone specificationoronecopyofitwithyourchopandsignatureofapprovalandretain the others for your record. In the event of an order being placed for this part number before the chop and signed with specification (or copy) is returned and without special explanation,itwill be assumed that full approval have beengiven.

CHECKED/DATE AUDITOR/DATE APPROVED/DATE Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

2 DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1 Customer P/NANT.0100016003000 Specification A3138 Bluetooth antenna RG1.13 black double tin wire with a length of 180mm, gain of 3.0 0.5dbi, equipped with shock-absorbing sponge L=100mm FPCB Bluetooth antenna and IPEX first generation terminal for environmental protection Description BT Antenna Supplier Qiyuan Producer Qiyuan Remark Pleasereturnonespecificationoronecopyofitwithyourchopandsignatureofapprovalandretain the others for your record. In the event of an order being placed for this part number before the chop and signed with specification (or copy) is returned and without special explanation, it will be assumed that full approval have beengiven.

CHECKED/DATE AUDITOR/DATE APPROVED/DATE Zhang Bingxiang Wu Qianjin Luo Daxun 2023.12.13 2023.12.13 2023.12.13 Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

3 DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1 Modify the section Change the page number Resume commence ment date content of change Change recorder Now no V1.1 Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

4 DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1 Specification list Antenna Picture 5 Electrical parameter 5 Mechanical parameters 5 Operating/ Storage Temperature 5 Structural drawings 6 Environmental and reliability testing 7 Test equipment 9 Measuring parameter 10 Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

5 DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1 Picture:

Electrical parameters:

Frequency Impedance S.W.R. Antenna Gain Polarization Return Loss 2.4~2.5GHz 50 2.0 3.21dBi@2.4~2.5GHz vertical polarization

-10dB MAX

(Mechanical parameters) Antenna Colour RF Cable Model Connect Type Black RG113Black I-PEX

/Operating/ Storage Temperature Operating Temperature Storage Temperature

-40~85

-40~85 Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

6 DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1

(Environmental and reliability testing) Environmental test High and low temperature humidity test report High temperature, low temperature and constant humidity test FPC Antenna Test date 2023.11.15 experiment al project Test sample Name plate Constant temperature and humidity test chamber quimente network analyzer quantity 5PCS 1. 1. The metal surface coating has no peeling, cracking, wrinkling and other defects;The non-metal part should not be discolored, broken, deformed, degummed and other defects. 2 .Electrical test meets the design requirements; The voltage standing wave ratio test is qualified. experimental project require experiment Actual result al method test data sample decide inspection standd nam eThe high temperatue test Temperature ()

+853 Temperature stabilization time of 12 test sample (h) Duration of test (h) Recovery time (h) 1 1 Temperature ()

-403 Temperature stabilization time of low test sample (h) temperatue Duration of test (h) test Recovery time (h) Temperature () steady-state Relative Humidity (%) damp heat t Duration of test (h) est Recovery time (h) 1 2 1

+402 90-95 21 1

+85 1.2 2.3 1

-40 1.2 2.4 1.1

+42 92 22 1.1 In accordance withGB2423.1

-89 9 chapter To be carried out in the prescribed manner n accordance withGB2423.1

-89 Section 8 chapter Regulation of the methods According to GB2423.3-93 section 5 chapter Stipulated by the parties the parties 1 2 3 4 5 1 2 3 4 5 1 2 3 4 qualified qualified qualified qualified qualified qualified qualified qualified qualified qualified qualified qualified qualified qualified 5 qualified Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

8 DONGGUAN QY TECHNOLOGY,CO,.LTD Ver1.1 salt spray test; salt fog test experimental project Test sample Name plate quimente inspection sta ndd Salt spray test report salt spray test; salt fog test FPC Antenna Test date 2023.11.15 salt spray corrosion test chamber quantity 5PCS Put the test sample into the prepared salt solution test chamber and salt spray corrosion chamber for continuous spray test Salt solution 52g/L concentration Actual test data 55g/L The pH of the salt solution6.5-7.2 The pH of the salt solution6.8 test cycle 24h test cycle26h test standard;

test criteria According to GB/T10125 "artificial atmosphere corrosion test, salt spray test" test;Results according to the GB/T6461-2002 "Metal and other inorganic coating on metal substrate after corrosion test is the grade of samples and test pieces" rating. test results NO. Corrosion rating Actual test data Evaluation of the results 1 2 3 4 5 Rp/Ra=10/10vsB Rp/Ra=10/10vsB Rp/Ra=10/10vsB Rp/Ra=10/10vsB Rp/Ra=10/10vsB Rp/Ra=10/10vsB Rp/Ra=10/10vsB Rp/Ra=10/10vsB qualified qualified qualified qualified Rp/Ra=10/10vsB Rp/Ra=10/10vsB qualified Address:4th Floor, No. 3 Lianhu Kelian Road, Tangxia Town, Dongguan City TEL 0769- 82953575 FAX0769-82953543 Websitehttp://www.qiyuandz.com/

9

Anker Innovations Limited Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong DateDec. 20, 2023 Product Model Number: A3138 FCC ID2AOKB-A3138 To whom it may concern, Re: Product Certification Representative Authorization Letter We authorize QAI Laboratories Ltd. 3980 North Fraser Way, Burnaby B.C. Canada V5J 5K5 to act on our behalf on all matters concerning the above named equipment. This shall include the following:

Testing Approval applications and procedures We declare that QAI Laboratories Ltd. is allowed to forward all information related to the approval project to the applied certification body and to the notification entities and to discuss any issues concerning the approval application. Any and all acts carried out by QAI Laboratories Ltd. on our behalf shall have the same effect as acts of our own. By: Louis Qi Contact Listed on FCC Wesbite Title: General Manager Email: Louis.qi@anker.com Telephone: +86-755-86544807 On behalf of: Anker Innovations Limited

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: Dec. 20, 2023 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2AOKB-A3138

[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: Dec. 20, 2023 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2AOKB-A3138

[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)

Anker Innovations Limited Room 1318-19, Hollywood Plaza, 610 Nathan Road, Mongkok, Kowloon, Hongkong Long/Short-term Confidentiality Request Federal Communications Commission 445 12th Street SW Washington, DC 20554 FCC ID:

2AOKB-A3138 To Whom it may concerns, Date: Dec. 20, 2023 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 180 days until:

not applicable External Photos Internal Photos Test Setup Photos Users 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

Anker Innovations Limited 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 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 Applicant Company name: Fantasia Trading LLC Company name: Anker Innovations Limited Address: 5350 Ontario Mills Pkwy, STE 100, Ontario, Address: Room 1318-19, Hollywood Plaza, 610 CA 91764, United States FRN: 0033423005 Contact Name: Louis Qi Telephone No: +1 (800)988 7973 Email: louis.qi@anker-in.com Signature:

Nathan Road, Mongkok, Kowloon, Hongkong Grantee Code: 2AOKB Contact Name: Louis.qi Telephone No: +86-755-86544807 Email:Louis.qi@anker.com Signature:

Title:Compliance Manager Date:21/2/2023 Title: Compliance Manager Date: 21/2/2023 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 2.911 (d)(7)USA Agent v1.2

WARNING:pdfminer.pdfpage:The PDF <_io.BufferedReader name='/Volumes/Scratch/Incoming/eg-scratch/7067404.pdf'> contains a metadata field indicating that it should not allow text extraction. Ignoring this field and proceeding. Use the check_extractable if you want to raise an error in this case Page 1 of 39 SAR Test Report Report No.: AGC01110231036FH01 FCC ID

: 2AOKB-A3138 APPLICATION PURPOSE

: Original Equipment PRODUCT DESIGNATION

soundcore Boom 2, SOUNDCORE BOOM 2 BRAND NAME

: soundcore MODEL NAME

: A3138 APPLICANT

: Anker Innovations Limited DATE OF ISSUE

: Dec. 18, 2023 STANDARD(S)

IEEE Std. 1528:2013 FCC 47 CFR Part 22.1093 IEEE Std C95.1 -2005 REPORT VERSION

: V1.0 Attestation of Global Compliance(Shenzhen) Co., Ltd. Report No.: AGC01110231036FH01 Page 2 of 39 Report Revise Record Report Version Revise Time Issued Date Valid Version Notes V1.0

Dec. 18, 2023 Valid Initial Release Report No.: AGC01110231036FH01 Page 3 of 39 Test Report Applicant Name Applicant Address Anker Innovations Limited 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 Factory Address N/A N/A Product Designation soundcore Boom 2, SOUNDCORE BOOM 2 Brand Name soundcore Model Name A3138 EUT Voltage Applicable Standard DC 7.3V by battery IEEE Std. 1528:2013 FCC 47 CFR Part 22.1093 IEEE Std C95.1 -2005 Date of receipt of test item Nov. 27, 2023 Test Date Nov. 28, 2023 Report Template Note: The results of testing in this report apply to the product/system which was tested only. AGCRT-US-2.4GHz BT/SAR (2021-04-20) Prepared By Reviewed By Approved By Thea Huang (Project Engineer) Dec. 18, 2023 Calvin Liu (Reviewer) Dec. 18, 2023 Max Zhang (Authorized Officer) Dec. 18, 2023 Report No.: AGC01110231036FH01 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 SATIMO SYSTEM USED FOR PERFORMING COMPLIANCE TESTS CONSISTS OF FOLLOWING ITEMS .................. 7 3.2. COMOSAR E-FIELD PROBE .......................................................................................................................... 8 3.3. ROBOT .......................................................................................................................................................... 8 3.4. VIDEO POSITIONING SYSTEM .......................................................................................................................... 9 3.5. DEVICE HOLDER ............................................................................................................................................ 9 3.6. SAM TWIN PHANTOM ................................................................................................................................... 10 4. SAR MEASUREMENT PROCEDURE .............................................................................................................. 11 4.1. SPECIFIC ABSORPTION RATE (SAR) .............................................................................................................. 11 4.2. SAR MEASUREMENT PROCEDURE ................................................................................................................ 12 4.3. RF EXPOSURE CONDITIONS ......................................................................................................................... 14 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 ..................................................................................................... 28 13. TEST RESULTS ........................................................................................................................................... 29 13.1. SAR TEST RESULTS SUMMARY................................................................................................................... 29 APPENDIX A. SAR SYSTEM CHECK DATA ..................................................................................................... 31 APPENDIX B. SAR MEASUREMENT DATA ...................................................................................................... 33 APPENDIX C. TEST SETUP PHOTOGRAPHS .................................................................................................. 39 APPENDIX D. CALIBRATION DATA ................................................................................................................. 39 Report No.: AGC01110231036FH01 Page 5 of 39 1. SUMMARY OF MAXIMUM SAR VALUE The maximum results of Specific Absorption Rate (SAR) found during testing for EUT are as follows:

Frequency Band Highest Reported 1g-SAR(W/kg) BT(BR/EDR) BT(BLE)_GFSK_1M BT(BLE)_GFSK_2M SAR Test Result 0.168 0.058 0.056 PASS SAR Test Limit

(W/kg) 4.0 This device is compliance with Specific Absorption Rate (SAR) for general population/uncontrolled exposure limits (4.0W/kg) specified in IEEE Std. 1528:2013; FCC 47CFR 2.1093; IEEE/ANSI C95.1:2005 and the following specific FCC Test Procedures:

KDB 447498 D04 General RF Exposure Guidance v01 KDB 865664 D01 SAR Measurement 100MHz to 6GHz v01r04 Report No.: AGC01110231036FH01 Page 6 of 39 2. GENERAL INFORMATION 2.1. EUT Description General Information Product Designation soundcore Boom 2, SOUNDCORE BOOM 2 Test Model Hardware Version Software Version Device Category A3138 VF.0 V1.3 Portable RF Exposure Environment Uncontrolled Antenna Type Bluetooth FPC Operation Frequency 2402~2480MHz Antenna Gain Bluetooth Version Type of modulation 3.21dBi V5.3 BR/EDR: GFSK, /4-DQPSK, 8-DPSK; BLE: GFSK Max. PK Power (dBm) BR/EDR: 9.337dBm; BLE: 3.920dBm Li-ion Battery Brand Name Model Name N/A 539072 Manufacturer Name FUJI ELECTRONICS (SHENZHEN) CO., LTD. Capacitance Rated Voltage 4900mAh DC 7.3V Note: 1.The sample used for testing is end product. 2. The test sample has no any deviation to the test method of standard mentioned in page 1. 3. SAR MEASUREMENT SYSTEM 3.1. The SATIMO system used for performing compliance tests consists of following items Report No.: AGC01110231036FH01 Page 7 of 39 The COMOSAR system for performing compliance tests consists of the following items:

The PC. It controls most of the bench devices and stores measurement data.A computer running WinXP and the Opensar software. The E-Field probe. The probe is a 3-axis system made of 3 distinct dipoles. Each dipole returns a voltage in function of the ambient electric field. The Keithley multimeter measures each probe dipole voltages. The SAM phantom simulates a human head. The measurement of the electric field is made inside the phantom. The liquids simulate the dielectric properties of the human head tissues. The network emulator controls the mobile phone under test. The validation dipoles are used to measure a reference SAR. They are used to periodically check the bench to make sure that there is no drift of the system characteristics over time. The phantom, the device holder and other accessories according to the targeted measurement. Report No.: AGC01110231036FH01 Page 8 of 39 3.2. COMOSAR E-Field Probe The SAR measurement is conducted with the dosimetric probe manufactured by SATIMO. The probe is specially designed and calibrated for use in liquid with high permittivity. The dosimetric probe has special calibration in liquid at different frequency. SATIMO conducts the probe calibration in compliance with international and national standards (e.g. IEEE1528 etc.)Under ISO17025.The calibration data are in Appendix D. Isotropic E-Field Probe Specification Model Manufacture SSE2 MVG Identification No. SN 45/22 EPGO391 Frequency 0.15GHz-6GHz Linearity:0.09dB(0.15GHz-6GHz) Dynamic Range Dimensions 0.01W/kg-100W/kg Linearity:0.09dB Overall length:330mm Length of individual dipoles:2mm Maximum external diameter:8mm Probe Tip external diameter:2.5mm Distance between dipoles/ probe extremity:1mm Application High precision dosimetric measurements in any exposure scenario

(e.g., very strong gradient fields). Only probe which enables compliance testing for frequencies up to 6 GHz with precisin of better 30%. 3.3. Robot The COMOSAR system uses the KUKA robot from SATIMO SA

(France).For the 6-axis controller COMOSAR system, the KUKA robot controller version from SATIMO is used. The XL robot series have many features that are important for our application:

High precision (repeatability 0.02 mm) High reliability (industrial design) Jerk-free straight movements Low ELF interference (the closed metallic construction shields against motor control fields) 6-axis controller Report No.: AGC01110231036FH01 Page 9 of 39 3.4. Video Positioning System The video positioning system is used in OpenSAR to check the probe. Which is composed of a camera, LED, mirror and mechanical parts.The camera is piloted by the main computer with firewire link. During the process, the actual position of the probe tip with respect to the robot arm is measured, as well as the probe length and the horizontal probe offset. The software then corrects all movements, such that the robot coordinates are valid for the probe tip. The repeatability of this process is better than 0.1 mm. If a position has been taught with an aligned probe, the same position will be reached with another aligned probe within 0.1 mm, even if the other probe has different dimensions. During probe rotations, the probe tip will keep its actual position. 3.5. Device Holder The COMOSAR device holder is designed to cope with different positions given in the standard. It has two scales for the device rotation (with respect to the body axis) and the device inclination (with respect to the line between the ear reference points). The rotation center for both scales is the ear reference point (EPR). Thus the device needs no repositioning when changing the angles. The COMOSAR device holder has been made out of low-loss POM material having relative permittivity r =3 and loss tangent = 0.02. The amount of dielectric material has the device, since the closest vicinity of been measurements have suggested that the influence of the clamp on the test results could thus be lowered. following dielectric parameters:

reduced the in Report No.: AGC01110231036FH01 Page 10 of 39 3.6. SAM Twin Phantom The SAM twin phantom is a fiberglass shell phantom with 2mm shell thickness (except the ear region where shell thickness increases to 6mm). It has three measurement areas:

Left head Right head Flat phantom The bottom plate contains three pair of bolts for locking the device holder. The device holder positions are adjusted to the standard measurement positions in the three sections. A white cover is provided to tap the phantom during off-periods to prevent water evaporation and changes in the liquid parameters. On the phantom top, three reference markers are provided to identify the phantom position with respect to the robot. 4. SAR MEASUREMENT PROCEDURE Report No.: AGC01110231036FH01 Page 11 of 39 4.1. Specific Absorption Rate (SAR) SAR is related to the rate at which energy is absorbed per unit mass in object exposed to a radio field. The SAR distribution in a biological body is complicated and is usually carried out by experimental techniques or numerical tiers of groups, occupational/controlled and modeling. The standard occupational/uncontrolled, based on a persons awareness and ability to exercise control over his or her exposure. In general, occupational/controlled exposure limits are higher than the limits for general population/uncontrolled. recommends limits two for The SAR definition is the time derivative (rate) of the incremental energy (dW) absorbed by (dissipated in) an incremental mass (dm) contained in a volume element(dv) of given mass density (). The equation description is as below:

SAR is expressed in units of Watts per kilogram (W/kg) SAR can be obtained using either of the following equations:

Where SAR is the specific absorption rate in watts per kilogram;

E is the r.m.s. value of the electric field strength in the tissue in volts per meter;

is the conductivity of the tissue in siemens per metre;

is the density of the tissue in kilograms per cubic metre;

ch is the heat capacity of the tissue in joules per kilogram and Kelvin;

dT dt t = 0 is the initial time derivative of temperature in the tissue in kelvins per second Report No.: AGC01110231036FH01 Page 12 of 39 4.2. SAR Measurement Procedure Step 1: Power Reference Measurement The Power Reference Measurement and Power Drift Measurement are for monitoring the power drift of the device under test in the batch process. The minimum distance of probe sensors to surface is 2.7mm This distance cannot be smaller than the distance os sensor calibration points to probe tip as `defined in the probe properties, Step 2: Area Scan The Area Scan is used as a fast scan in two dimensions to find the area of high field values, before doing a fine measurement around the hot spot. The sophisticated interpolation routines implemented in SATIMO software can find the maximum locations even in relatively coarse grids. When an Area Scan has measured all reachable points, it computes the field maximal found in the scanned area, within a range of the global maximum. The range (in db) is specified in the standards for compliance testing. For example, a 2db range is required in IEEE Standard 1528 and IEC62209 standards, whereby 3db is a requirement when compliance is assessed in accordance with the ARIB standard (Japan) If one Zoom Scan follows the Area Scan, then only the absolute maximum will be taken as reference. For cases where multiple maximum are detected, the number of Zoom Scan has to be increased accordingly. Area Scan Parameters extracted from KDB 865664 D01 SAR Measurement 100MHz to 6GHz Step 3: Zoom Scan Zoom Scan are used to assess the peak spatial SAR value within a cubic average volume containing 1g abd 10g of simulated tissue. The Zoom Scan measures points(refer to table below) within a cube whose base faces are centered on the maxima found in a preceding area scan job within the same procedure. When the measurement is done, the Zoom Scan evaluates the averaged SAR for 1g and 10g and displays these values next to the jobs label. Zoom Scan Parameters extracted from KDB865664 d01 SAR Measurement 100MHz to 6GHz Report No.: AGC01110231036FH01 Page 13 of 39 Step 4: Power Drift Measurement The Power Drift Measurement measures the field at the same location as the most recent power reference measurement within the same procedure, and with the same settings. The Power Drift Measurement gives the field difference in dB from the reading conducted within the same settings. This allows a user to monitor the power drift of the device under test within a batch process. The measurement procedure is the same as Step 1. Report No.: AGC01110231036FH01 Page 14 of 39 4.3. RF Exposure Conditions Test Configuration and setting:

The device is a bluetooth Bluetooth speaker, and supports Bluetooth wireless technology. For SAR testing, the device was controlled by software to test at reference fixed frequency points. Antenna Location:

BT Antenna Position 20mm 24mm 135mm 18mm Report No.: AGC01110231036FH01 Page 15 of 39 SAR Test Exclusion Consideration for Adjacent Edges Per KDB 447498 D04 Appendix B:

B.3 MPE-based Exemption: For mobile devices that are not exempt per Table B.1 [Table 1 of 1.1307(b)(1)(i)(C)] at distances from 20 cm to 40 cm and in 0.3 GHz to 6 GHz, evaluation of compliance with the exposure limits in 1.1310 is necessary if the ERP of the device is greater than ERP 20cm in Formula (B.1)

[repeated from 2.1091(c)(1) and 1.1307(b)(1)(i)(B)]. B.4 SAR-based Exemption: This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2). Test mode Ch.(GHz) Distance

(mm) x Pth

(mW) Max.power

(dBm) Max.power

(mW) SAR test

(Yes/No) BR/EDR Back Side Front Side Right Side Left Side Top Side Bottom Side BLE- GFSK 1M Back Side Front Side Right Side Left Side Top Side Bottom Side BLE- GFSK 2M Back Side Front Side Right Side Left Side Top Side Bottom Side 2.441 2.441 2.441 2.441 2.441 2.441 2.440 2.440 2.440 2.440 2.440 2.440 2.440 2.440 2.440 2.440 2.440 2.440 9 18 3 24 20 135 9 18 3 24 20 135 9 18 3 24 20 135 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 1.901 8.414 31.432 1.042 54.315 38.403 1449.331 8.416 31.438 1.042 54.325 38.411 1449.381 8.416 31.438 1.042 54.325 38.411 1449.381 9.337 9.337 9.337 9.337 9.337 9.337 3.92 3.92 3.92 3.92 3.92 3.92 3.659 3.659 3.659 3.659 3.659 3.659 8.584 8.584 8.584 8.584 8.584 8.584 2.466 2.466 2.466 2.466 2.466 2.466 2.322 2.322 2.322 2.322 2.322 2.322 Yes No Yes No No No No No Yes No No No No No Yes No No No Report No.: AGC01110231036FH01 Page 16 of 39 5. TISSUE SIMULATING LIQUID For SAR measurement of the field distribution inside the phantom, the phantom must be filled with homogeneous tissue simulating liquid to a depth of at least 15cm. For head SAR testing the liquid height from the ear reference point (ERP) of the phantom to the liquid top surface is larger than 15cm For body SAR testing, the liquid height from the center of the flat phantom to the liquid top surface is larger than 15cm.The nominal dielectric values of the tissue simulating liquids in the phantom and the tolerance of 5% are listed in 5.2 5.1. The composition of the tissue simulating liquid Ingredient

(% Weight) Frequency

(MHz) 2450 Head Water Nacl Polysorbate 20 DGBE 1,2 Propanediol Triton X-100 71.88 0.16 0.0 7.99 0.0 19.97 5.2. Tissue Dielectric Parameters for Head and Body Phantoms head The head tissue dielectric parameters recommended by the IEEE 1528 have been incorporated in the following table. These head parameters are derived from planar layer models simulating the highest expected SAR for the dielectric properties and tissue thickness variations in a human head. Other head and body tissue parameters that have not been specified in IEEE 1528 are derived from the tissue dielectric parameters computed from the 4-Cole-Cole equations described in Reference [12] and extrapolated according to the head parameters specified in IEEE 1528. Target Frequency

(MHz) 300 450 835 900 915 1450 1610 1800 2000 2450 3000

(S/m) 0.87 0.87 0.90 0.97 1.01 1.20 1.29 1.40 1.80 2.40

(S/m) 0.87 0.87 0.90 0.97 1.01 1.20 1.29 1.40 1.80 2.40 r 45.3 43.5 41.5 41.5 41.5 40.5 40.3 40.0 39.2 38.5 r 45.3 43.5 41.5 41.5 41.5 40.5 40.3 40.0 39.2 38.5 body

(r = relative permittivity, = conductivity and = 1000 kg/m3) Report No.: AGC01110231036FH01 Page 17 of 39 5.3. Tissue Calibration Result The dielectric parameters of the liquids were verified prior to the SAR evaluation using SATIMO Dielectric Probe Kit and R&S Network Analyzer ZVL6. Head Fr.

(MHz) 2440 2441 2450 Tissue Stimulant Measurement for 2450MHz Dielectric Parameters (10%) r39.2(35.28-43.12)

[s/m]1.80(1.62-1.98) 40.73 40.73 40.18 1.75 1.75 1.76 Tissue Temp

[oC]

20.9 Test time Nov. 28, 2023 Report No.: AGC01110231036FH01 Page 18 of 39 6. SAR SYSTEM CHECK PROCEDURE 6.1. SAR System Check Procedures SAR system check is required to confirm measurement accuracy, according to the tissue dielectric media, probe calibration points and other system operating parameters required for measuring the SAR of a test device. The system verification must be performed for each frequency band and within the valid range of each probe calibration point required for testing the device. The same SAR probe(s) and tissue-equivalent media combinations used with each specific SAR system for system verification must be used for device testing. When multiple probe calibration points are required to cover substantially large transmission bands, independent system verifications are required for each probe calibration point. A system verification must be performed before each series of SAR measurements using the same probe calibration point and tissue-equivalent medium. Additional system verification should be considered according to the conditions of the tissue-equivalent medium and measured tissue dielectric parameters, typically every three to four days when the liquid parameters are remeasured or sooner when marginal liquid parameters are used at the beginning of a series of measurements. Each SATIMO system is equipped with one or more system check kits. These units, together with the predefined measurement procedures within the SATIMO software, enable the user to conduct the system check and system validation. System kit includes a dipole, and dipole device holder. The system check verifies that the system operates within its specifications. Its performed daily or before every SAR measurement. The system check uses normal SAR measurement in the flat section of the phantom with a matched dipole at a specified distance. The system check setup is shown as below. 6.2. SAR System Check 6.2.1. Dipoles Report No.: AGC01110231036FH01 Page 19 of 39 The dipoles are based on the IEEE-1528 standard, and are complied with mechanical and electrical specifications in line with the requirements of IEEE. the table below provides details for the mechanical and electrical Specifications for the dipoles. Frequency 2450MHz L (mm) 51.5 h (mm) 30.4 d (mm) 3.6 6.2.2. System Check Result Report No.: AGC01110231036FH01 Page 20 of 39 System Performance Check at 2450MHz for Head Validation Kit: SN 29/15 DIP 2G450-393 Target Value(W/kg) 10g 1g Frequency

[MHz]

1g Reference Result

( 10%) 10g Normalized to 1W(W/kg) 10g 1g Tissue Temp.

[C]

2450 54.32 24.25 48.888-59.752 21.825-26.675 55.89 25.14 20.9 Test time Nov. 28, 2023 Note:

(1) We use a CW signal of 18dBm for system check, and then all SAR values are normalized to 1W forward power. The result must be within 10% of target value. Report No.: AGC01110231036FH01 Page 21 of 39 7. EUT TEST POSITION This EUT was tested in Right side and Back side. 7.1. Test Position

(1) To position the EUT parallel to the phantom surface.

(2) To adjust the EUT parallel to the flat phantom.

(3) To adjust the distance between the EUT surface and the flat phantom to 0mm. Report No.: AGC01110231036FH01 Page 22 of 39 8. SAR EXPOSURE LIMITS Limits for General Population/Uncontrolled Exposure (W/kg) Type Exposure Spatial Peak SAR (1 g cube tissue for brain or body) Spatial Average SAR (Whole body) Spatial Peak SAR (Limbs) Uncontrolled Environment Limit (W/kg) 1.60 0.08 4.0 Report No.: AGC01110231036FH01 Page 23 of 39 9. TEST FACILITY Test Site Attestation of Global Compliance (Shenzhen) Co., Ltd Location 1-2/F, Building 19, Junfeng Industrial Park, Chongqing Road, Heping Community, Fuhai Street, Bao'an District, Shenzhen, Guangdong, China Designation Number CN1259 FCC Test Firm Registration Number 975832 A2LA Cert. No. 5054.02 Description Attestation of Global Compliance(Shenzhen) Co., Ltd is accredited by A2LA Report No.: AGC01110231036FH01 Page 24 of 39 Current calibration date Dec. 02, 2022 Validated. No cal required. Validated. No cal required. Jun. 02, 2023 Next calibration date Dec. 01, 2023 Validated. No cal required. Validated. No cal required. Jun. 01, 2024 N/A N/A 10. TEST EQUIPMENT LIST Equipment description Manufacturer/

Model Identification No. Software version SAR Probe MVG SN 45/22 EPGO391 Phantom SATIMO SN_4511_SAM90 Liquid SATIMO N/A Multimeter Keithley 2000 1350784 SAR Software SATIMO-OpenSAR N/A Dipole SATIMO SID2450 SN 29/15 DIP 2G450-393 N/A N/A N/A N/A OpenSAR V4_02_32 N/A Apr. 28,2022 Apr. 27,2025 Signal Generator EXA Signal Analyzer Network Analyzer Attenuator Attenuator Amplifier Directional Couple Directional Couple Power Sensor Power Sensor Power Viewer Calibration standard parts for network sub - port Agilent-E4438C US41461365 V5.03 Jun. 01, 2023 May 31, 2024 Agilent / N9010A MY53470504 N/A Jun. 01, 2023 May 31, 2024 Rhode & Schwarz ZVL6 Warison

/WATT-6SR1211 Mini-circuits /

VAT-10+

AS0104-55_55 Werlatone/

C5571-10 Werlatone/

C6026-10 NRP-Z21 NRP-Z23 R&S 101443 3.2 Sep. 21, 2023 Sep. 20, 2024 S/N:WRJ34AYM2F1 N/A June 07, 2023 June 06, 2024 31405 1004793 SN99463 SN99482 1137.6000.02 100323 V2.3.1.0 N/A N/A N/A N/A N/A N/A June 07, 2023 June 06, 2024 N/A N/A Mar. 10, 2022 Mar. 09, 2024 Mar. 10, 2022 Mar. 09,2024 Sep. 05, 2023 Feb. 15, 2023 N/A Sep. 04, 2024 Feb. 14, 2024 N/A R&S/ ZV-Z132 N/A V2.3.1.0 Nov. 11, 2023 Nov. 10, 2024 Note: Per KDB 865664 Dipole SAR Validation, AGC Lab has adopted 3 years calibration intervals. On annual basis, every measurement dipole has been evaluated and is in compliance with the following criteria:

1. There is no physical damage on the dipole;

2. System validation with specific dipole is within 10% of calibrated value;

3. Return-loss is within 20% of calibrated measurement;

4. Impedance is within 5 of calibrated measurement. 11. MEASUREMENT UNCERTAINTY SATIMO Uncertainty- SN 45/22 EPGO391 Measurement uncertainty for DUT averaged over 1 gram / 10 gram. Uncertainty Component Sec. Tol

(+- %) Prob. Dist. Div. Ci (1g) Ci (10g) 1g Ui

(+-%) 10g Ui

(+-%) vi Report No.: AGC01110231036FH01 Page 25 of 39 1 1 1 7.000 7.000 1.732 0.707 0.707 0.088 0.088 1.732 0.707 0.707 0.088 0.088 Measurement System Probe calibration Axial Isotropy Hemispherical Isotropy Boundary effect Linearity System detection limits Modulation response Readout Electronics Response Time Integration Time RF ambient conditions-Noise RF ambient conditions-reflections Probe positioner mechanical tolerance Probe positioning with respect to phantom shell Extrapolation, interpolation, and integrations algorithms for max. SAR evaluation Test sample Related Test sample positioning Device holder uncertainty Output power variationSAR drift measurement SAR scaling N R R R R R R N R R R R R R R N N R E.2.1 E.2.2 E.2.2 E.2.3 E.2.4 E.2.4 E2.5 E.2.6 E.2.7 E.2.8 E.6.1 E.6.1 7.000 0.215 0.215 1.000 0.995 1.000 3.000 0.021 0.000 1.400 3.000 3.000 E.6.2 1.400 E.6.3 1.400 E.5 2.300 E.4.2 E.4.1 E.2.9 E.6.5 2.6 3 5 5 4 1.732 1.732 1.732 1.732 1 1.732 1.732 1.732 1.732 1.732 1.732 1.732 1 1 1.732 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 R 1.732 R 1.732 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 0.577 0.577 0.574 0.574 0.577 0.577 1.732 1.732 0.021 0.021 0.000 0.000 0.808 0.808 1.732 1.732 1.732 1.732 0.808 0.808 0.808 0.808 1.328 1.328 2.60 3.00 2.60 3.00 2.89 2.89 2.89 2.89 2.309 2.309 Phantom and tissue parameters Phantom shell uncertaintyshape, thickness, and permittivity Uncertainty in SAR correction for deviations in permittivity and conductivity Liquid conductivity measurement Liquid permittivity measurement Liquid conductivitytemperature uncertainty Liquid permittivitytemperature uncertainty Combined Standard Uncertainty Expanded Uncertainty

(95% Confidence interval) E.3.1 E.3.2 E.3.3 E.3.3 E.3.4 E.3.4 1.9 N 4 5 2.5 2.5 N N R R RSS K=2 1 1 1 1 0.84 1.900 1.596 0.78 0.71 3.120 2.840 0.23 0.26 1.150 1.300 M M 1.732 0.78 0.71 1.126 1.025 1.732 0.23 0.26 0.332 0.375 10.529 10.344 21.059 20.689 Report No.: AGC01110231036FH01 Page 26 of 39 SATIMO Uncertainty- SN 45/22 EPGO391 System Validation uncertainty for DUT averaged over 1 gram / 10 gram. Sec. Tol

(+- %) Prob. Dist. Div. Ci (1g) Ci (10g) 1g Ui

(+-%) 10g Ui

(+-%) vi Uncertainty Component Measurement System Probe calibration Axial Isotropy Hemispherical Isotropy Boundary effect Linearity System detection limits Modulation response Readout Electronics Response Time Integration Time RF ambient conditions-Noise RF ambient conditions-reflections Probe positioner mechanical tolerance Probe positioning with respect to phantom shell Extrapolation, interpolation, and integrations algorithms for max. SAR evaluation System validation source Deviation of experimental dipole from numerical dipole Input power and SAR drift measurement Dipole axis to liquid distance Phantom and set-up Phantom shell uncertaintyshape, thickness, and permittivity Uncertainty in SAR correction for deviations in permittivity and conductivity Liquid conductivitytemperature uncertainty Liquid conductivitymeasured Liquid permittivitytemperature uncertainty Liquid permittivitymeasured Combined Standard Uncertainty Expanded Uncertainty

(95% Confidence interval) N R R R R R R N R R R R R R R N R R E.2.1 E.2.2 E.2.2 E.2.3 E.2.4 E.2.4 E2.5 E.2.6 E.2.7 E.2.8 E.6.1 E.6.1 7.000 0.215 0.215 1.000 0.995 1.000 3.000 0.021 0.000 1.400 3.000 3.000 E.6.2 1.400 E.6.3 1.400 E.5 2.300 E.6.4 8,6.6.4 8,E.6.6 E.3.1 5 5 2 4 E.3.2 1.9 N E.3.3 E.3.3 E.3.4 E.3.4 4 5 2.5 2.5 N N R R RSS K=2 1 1 1 7.000 7.000 1.732 1.000 1.000 0.124 0.124 1.732 0.000 0.000 0.000 0.000 1.732 1.000 1.000 0.577 0.577 1.732 1.000 1.000 0.574 0.574 1.732 1.000 1.000 0.577 0.577 1.732 0.000 0.000 0.000 0.000 1.000 1.000 1.000 0.021 0.021 1.732 0.000 0.000 0.000 0.000 1.732 0.000 0.000 0.000 0.000 1.732 1.000 1.000 1.732 1.732 1.732 1.000 1.000 1.732 1.732 1.732 1.000 1.000 0.808 0.808 1.732 1.000 1.000 0.808 0.808 1.732 1.000 1.000 1.328 1.328 R 1.732 1 1.732 1.732 1 1 1 1 1 1 1 1 1 1 1 1 5 5 2.887 2.887 1.155 1.155 2.309 2.309 0.84 1.9 1.596 0.78 0.23 0.71 0.26 3.12 1.15 2.84 1.3 M 1.732 0.78 0.71 1.126 1.025 1.732 0.23 0.26 0.332 0.375 M 10.462 10.276 20.925 20.552 Report No.: AGC01110231036FH01 Page 27 of 39 SATIMO Uncertainty- SN 45/22 EPGO391 System Check uncertainty for DUT averaged over 1 gram / 10 gram. Tol

(+- %) Prob. Dist. Div. Ci (1g) Ci (10g) 1g Ui

(+-%) 10g Ui

(+-%) vi Uncertainty Component Sec. Measurement System Probe calibration drift E.2.1.3 E.2.2 E.2.2 E.2.3 E.2.4 E.2.4 E2.5 E.2.6 E.2.7 E.2.8 E.6.1 E.6.1 E.6.2 E.6.3 E.5 E.6.4 8,6.6.4 8,E.6.6 E.3.1 Axial Isotropy Hemispherical Isotropy Boundary effect Linearity System detection limits Modulation response Readout Electronics Response Time Integration Time RF ambient conditions-Noise RF ambient conditions-reflections Probe positioner mechanical tolerance Probe positioning with respect to phantom shell Extrapolation, interpolation, and integrations algorithms for max. SAR evaluation System check source (dipole) Deviation of experimental dipoles Input power and SAR drift measurement Dipole axis to liquid distance Phantom and tissue parameters Phantom shell uncertaintyshape, thickness, and permittivity Uncertainty in SAR correction for deviations in permittivity and conductivity Liquid conductivity measurement Liquid permittivity measurement Liquid conductivitytemperature uncertainty Liquid permittivitytemperature uncertainty Combined Standard Uncertainty Expanded Uncertainty

(95% Confidence interval) 7.000 0.215 0.215 1.000 0.995 1 3 0.021 0 1.4 3 3 1.4 1.4 2.3 2 5 2 4 N R R R R R R N R R R R R R R N R R R 1 3 3 3 3 3 3 3 3 3 3 3 3 3 3 1 3 3 3 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 1 1 7 0 0 0 0 0 0 0 0 0 0 0 7 0 0 0 0 0 0 0 0 0 0 0 0.81 0.81 0.81 0.81 0.00 2 2.89 2.89 1.15 1.15 2.31 2.31 0 2 E.3.2 1.9 N 1.000 0.84 1.90 1.60 E.3.3 E.3.3 4 5 E.3.4 2.5 E.3.4 2.5 N N R R RSS K=2 1.000 0.78 0.71 3.12 2.84 1.000 0.23 0.26 1.15 1.30 M 3 3 0.78 0.71 1.13 1.02 0.23 0.26 0.33 0.38 M 8.927 8.708 17.853 17.415 12. CONDUCTED POWER MEASUREMENT Bluetooth_V5.3 Modulation Channel Frequency(MHz) Report No.: AGC01110231036FH01 Page 28 of 39 PK. Power (dBm) BR/EDR GFSK

/4-DQPSK 8-DPSK BLE GFSK 1M GFSK 2M 0 39 78 0 39 78 0 39 78 0 19 39 0 19 39 2402 2441 2480 2402 2441 2480 2402 2441 2480 2402 2440 2480 2402 2440 2480 9.261 9.295 9.088 9.279 9.274 9.111 9.328 9.337 9.123 3.878 3.920 3.764 3.602 3.659 3.496 Report No.: AGC01110231036FH01 Page 29 of 39 13. TEST RESULTS 13.1. SAR Test Results Summary 13.1.1. Test position and configuration 1. The EUT is a model of bluetooth speaker According to KDB 447498 D04 General RF Exposure Guide v01, due to maximum peak power for bluetooth is more than just a test exclusion threshold, which must be tested. 2. Test procedure:

(1) Lab. use the head liquid with a separation of 0mm at flat phantom to test the Right side and Back side where the antenna are closest to the outer surface. 3. For SAR testing, the device was controlled by software to test at reference fixed frequency points. 13.1.2. Operation Mode 1. Per KDB 447498 D04 v01 ,for each exposure position, if the highest 1-g SAR is 0.8 W/kg, testing for low and high channel is optional. 2. Per KDB 865664 D01 v01r04,for each frequency band, if the measured SAR is 0.8W/kg, testing for repeated SAR measurement is required , that the highest measured SAR is only to be tested. When the SAR results are near the limit, the following procedures are required for each device to verify these types of SAR measurement related variation concerns by repeating the highest measured SAR configuration in each frequency band.

(1) When the original highest measured SAR is 0.8W/kg, repeat that measurement once.

(2) Perform a second repeated measurement only if the ratio of largest to smallest SAR for the original and first repeated measurements is >1.20 or when the original or repeated measurement is 1.45 W/kg.

(3) Perform a third repeated measurement only if the original, first and second repeated measurement is 1.5 W/kg and ratio of largest to smallest SAR for the original, first and second measurement is 1.20. 3. Maximum Scaling SAR in order to calculate the Maximum SAR values to test under the standard Peak Power, Calculation method is as follows:

Maximum Scaling SAR =tested SAR (Max.) [maximum turn-up power (mW)/ maximum measurement output power(mW) ]

Report No.: AGC01110231036FH01 Page 30 of 39 13.1.3. SAR Test Results Summary SAR MEASUREMENT Depth of Liquid (cm):>15 Relative Humidity (%): 56.4 Product: soundcore Boom 2, SOUNDCORE BOOM 2 Position Mode Ch. Test Mode: BT (BR/EDR) Fr.

(MHz) Power Drift

(<5%) SAR (1g)

(W/kg) Max. Tune-up Power

(dBm) Meas. output Power

(dBm) Scaled SAR

(W/kg) Limit W/kg Right Side Back Side 1DH5 1DH5 39 39 2441 2441 0.07 0.10 0.160 0.093 9.50 9.50 9.295 9.295 0.168 0.097 4.0 4.0 Test Mode: BT (BLE)_GFSK_1M Right Side GFSK 19 2440 0.17 0.057 4.00 3.920 0.058 4.0 Test Mode: BT (BLE)_GFSK_2M Right Side GFSK 19 2440 0.21 0.052 4.00 3.659 0.056 4.0 Note:

The test separation of all above table is 0mm. Plots are only shown for the bold markered worst case SAR results. Report No.: AGC01110231036FH01 Page 31 of 39 APPENDIX A. SAR SYSTEM CHECK DATA Test Laboratory: AGC Lab Date: Nov. 28, 2023 System Check Head 2450 MHz DUT: Dipole 2450 MHz Type: SID 2450 Communication System CW; Communication System Band: D2450 (2450.0 MHz); Duty Cycle: 1:1; Conv.F=2.34 Frequency: 2450 MHz; Medium parameters used: f = 2450 MHz; =1.76 mho/m; r =40.18; = 1000 kg/m ;

Phantom section: Flat Section; Input Power=18dBm Ambient temperature ():21.1, Liquid temperature (): 20.9 SATIMO Configuration Probe: SSE2; Calibrated: Dec. 02, 2022; Serial No.: SN 45/22 EPGO391 Sensor-Surface: 4mm (Mechanical Surface Detection) Phantom: SAM twin phantom Measurement SW: OpenSAR V4_02_32 Configuration/System Check 2450MHz Head/Area Scan: Measurement grid: dx=8mm, dy=8mm Configuration/System Check 2450MHz Head/Zoom Scan: Measurement grid: dx=5mm,dy=5mm, dz=5mm SURFACE SAR VOLUME SAR Maximum location: X=-7.00, Y=1.00 SAR Peak: 6.60 W/kg SAR 10g (W/Kg) SAR 1g (W/Kg) 1.586140 3.526273 Z (mm) SAR

(W/Kg) 0.00 6.6777 4.00 3.8520 9.00 1.8115 14.00 0.8827 19.00 0.4327 24.00 0.2138 29.00 0.1064 Report No.: AGC01110231036FH01 Page 32 of 39 3D screen shot Hot spot position Report No.: AGC01110231036FH01 Page 33 of 39 APPENDIX B. SAR MEASUREMENT DATA BT (BR/EDR) Test Laboratory: AGC Lab Date: Nov. 28, 2023 BT (BR/EDR) Mid- Right (1DH5) DUT: soundcore Boom 2, SOUNDCORE BOOM 2; Type: A3138 Communication System: BT; Communication System Band: Bluetooth; Duty Cycle:76.51%;Conv.F=2.34;

Frequency: 2441 MHz; Medium parameters used: f = 2450 MHz; =1.75 mho/m; r =40.73; = 1000 kg/m ;

Phantom section: Flat Section Ambient temperature ():21.1, Liquid temperature (): 20.9 SATIMO Configuration:

Probe: SSE2; Calibrated: Dec. 02, 2022; Serial No.: SN 45/22 EPGO391 Sensor-Surface: 4mm (Mechanical Surface Detection) Phantom: SAM twin phantom Measurement SW: OpenSAR V4_02_32 Configuration/BT (BR/EDR) Mid-Right /Area Scan: Measurement grid: dx=8mm, dy=8mm Configuration/BT (BR/EDR) Mid-Right /Zoom Scan: Measurement grid: dx=5mm,dy=5mm, dz=5mm;

Area Scan ZoomScan Phantom Device Position Band Channels Signal surf_sam_plan.txt, h= 5.00 mm 7x7x7,dx=5mm dy=5mm dz=5mm Validation plane Right BT (BR/EDR) Middle Crest factor: 1.31 SURFACE SAR VOLUME SAR Maximum location: X=-1.00, Y=-1.00 SAR Peak: 0.31 W/kg SAR 10g (W/Kg) SAR 1g (W/Kg) 0.072479 0.160359 Report No.: AGC01110231036FH01 Page 34 of 39 Z (mm) SAR

(W/Kg) 0.00 0.3034 4.00 0.1754 9.00 0.0835 14.00 0.0422 19.00 0.0249 24.00 0.0206 29.00 0.0188 3D screen shot Hot spot position Report No.: AGC01110231036FH01 Page 35 of 39 BT (BLE) Test Laboratory: AGC Lab Date: Nov. 28, 2023 BT (BLE) Mid- Right (GFSK_1M) DUT: soundcore Boom 2, SOUNDCORE BOOM 2; Type: A3138 Communication System: BT; Communication System Band: Bluetooth; Duty Cycle:85.36%;Conv.F=2.34;

Frequency: 2440 MHz; Medium parameters used: f = 2450 MHz; =1.75 mho/m; r =40.73; = 1000 kg/m ;

Phantom section: Flat Section Ambient temperature ():21.1, Liquid temperature (): 20.9 SATIMO Configuration:

Probe: SSE2; Calibrated: Dec. 02, 2022; Serial No.: SN 45/22 EPGO391 Sensor-Surface: 4mm (Mechanical Surface Detection) Phantom: SAM twin phantom Measurement SW: OpenSAR V4_02_32 Configuration/BT (BLE) Mid-Right /Area Scan: Measurement grid: dx=8mm, dy=8mm Configuration/BT (BLE) Mid-Right /Zoom Scan: Measurement grid: dx=5mm,dy=5mm, dz=5mm;

Area Scan ZoomScan Phantom Device Position Band Channels Signal surf_sam_plan.txt, h= 5.00 mm 7x7x7,dx=5mm dy=5mm dz=5mm Validation plane Right BT (BLE) Middle Crest factor: 1.17 SURFACE SAR VOLUME SAR Maximum location: X=0.00, Y=9.00 SAR Peak: 0.11 W/kg SAR 10g (W/Kg) SAR 1g (W/Kg) 0.031303 0.056792 Z (mm) SAR

(W/Kg) 0.00 0.1145 4.00 0.0604 9.00 0.0285 14.00 0.0213 19.00 0.0206 24.00 0.0204 29.00 0.0209 Report No.: AGC01110231036FH01 Page 36 of 39 3D screen shot Hot spot position Report No.: AGC01110231036FH01 Page 37 of 39 BT (BLE) Test Laboratory: AGC Lab Date: Nov. 28, 2023 BT (BLE) Mid- Right (GFSK_2M) DUT: soundcore Boom 2, SOUNDCORE BOOM 2; Type: A3138 Communication System: BT; Communication System Band: Bluetooth; Duty Cycle:85.36%;Conv.F=2.34;

Frequency: 2440 MHz; Medium parameters used: f = 2450 MHz; =1.75 mho/m; r =40.73; = 1000 kg/m ;

Phantom section: Flat Section Ambient temperature ():21.1, Liquid temperature (): 20.9 SATIMO Configuration:

Probe: SSE2; Calibrated: Dec. 02, 2022; Serial No.: SN 45/22 EPGO391 Sensor-Surface: 4mm (Mechanical Surface Detection) Phantom: SAM twin phantom Measurement SW: OpenSAR V4_02_32 Configuration/BT (BLE) Mid-Right /Area Scan: Measurement grid: dx=8mm, dy=8mm Configuration/BT (BLE) Mid-Right /Zoom Scan: Measurement grid: dx=5mm,dy=5mm, dz=5mm;

Area Scan ZoomScan Phantom Device Position Band Channels Signal surf_sam_plan.txt, h= 5.00 mm 7x7x7,dx=5mm dy=5mm dz=5mm Validation plane Right BT (BLE) Middle Crest factor: 1.17 SURFACE SAR VOLUME SAR Maximum location: X=0.00, Y=-3.00 SAR Peak: 0.09 W/kg SAR 10g (W/Kg) SAR 1g (W/Kg) 0.030788 0.052182 Z (mm) SAR

(W/Kg) 0.00 0.0947 4.00 0.0540 9.00 0.0303 14.00 0.0212 19.00 0.0215 24.00 0.0213 29.00 0.0202 Report No.: AGC01110231036FH01 Page 38 of 39 3D screen shot Hot spot position Report No.: AGC01110231036FH01 Page 39 of 39 APPENDIX C. TEST SETUP PHOTOGRAPHS Refer to Attached files. APPENDIX D. CALIBRATION DATA Refer to Attached files.

----END OF REPORT----

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