2BCWD-BTS07Bluetooth speaker

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Any changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: -- Reorient or relocate the receiving antenna. -- Increase the separation between the equipment and receiver. -- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected. -- Consult the dealer or an experienced radio/TV technician for help. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restrictio BTS

(Dongguan Keweixing Electronic Technology Co., Ltd.) (September 15, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(i) request for (FCC ID: 2BCWD-BTS07) [Dongguan Keweixing Electronic Technology Co., Ltd.] (“the applicant”) certifies that the equipment for which authorization is sought is not “covered” equipment prohibited from receiving an equipment authorization pursuant to section 2.903 of the FCC rules. Sincerely, (Applicant signature) (Applicant printed name) Chunbo Sun (Dongguan Keweixing Electronic Technology Co., Ltd.) (September 15, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: Attestation Statements Part 2.911(d)(5)(ii) request for (FCC ID: 2BCWD-BTS07) [Dongguan Keweixing Electronic Technology Co., Ltd.] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List as an entity producing “covered” equipment. Sincerely, (Applicant signature) (Applicant printed name) Chunbo Sun

Dongguan Keweixing Electronic Technology Co., Ltd. Model Difference Data：September 15, 2023 Product description: Bluetooth speaker Model name: BTS07, A03, W11, W15, W1 Trade Name: N/A FCC ID: 2BCWD-BTS07 All the model are the same circuit and RF module, except model names . Regards Sincerely Client’s signature : Client’s name / title : Chunbo Sun（General Manager） Contact information / address：Address 302, Floor 3, Huiqin Industrial Zone, No. 280 South Tangxia Avenue, Tangxia Town, Dongguan City

Dongguan Keweixing Electronic Technology Co., Ltd. (September 15, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: CONFIDENTIALITY REQUEST FOR (Bluetooth speaker / BTS07, A03, W11, W15, W1 / FCC ID: 2BCWD-BTS07 ) To Whom It May Concern: This letter serves as an official request for confidentiality under sections 0.457 and 0.459 of CFR 47. We have requested that the Exhibits Long-Term Confidentiality Short-Term Confidentiality NOTE 2 ID Label/Location No No Attestation Statement No No External Photos No ☐ Block Diagram ☒ ☐ Schematics ☒ ☐ Test Report No No Test Setup Photos No ☐ User’s Manual ☐ NOTE 1 ☒ Internal Photos ☐ NOTE 1 ☒ Parts List / Tune Up ☐ ☐ RF Exposure Info No No Operational Description ☒ ☐ Cover Letter(s) No No SDR Software / Security Info ☐ No required to be submitted with this application be permanently withheld from public review. Above mentioned document contains detailed system and equipment description are considered as proprietary information in operation of the equipment. The public disclosure of above documents might be harmful to our company and would give competitor an unfair advantage in the market. Please contact me if there is any information you may need. Sincerely, Signature: Name: Chunbo Sun Title: General Manager

Dongguan Keweixing Electronic Technology Co., Ltd. (September 15, 2023) Eurofins Electrical and Electronic Testing NA, Inc. 914 West Patapsco Avenue Baltimore, MD 21230 RE: LETTER OF AGENT AUTHORIZATION To Whom It May Concern: We, the undersigned, hereby authorize (Shenzhen CTB Testing Technology Co., Ltd.) to act on our behalf in all matters relating to application for equipment authorization, including the signing of all documents relating to these matters. We also hereby certify that no party to the application authorized hereunder is subject to the denial of benefits, including FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C.853(a). This agreement expires one year from the current date. Sincerely, Signature: Name: Chunbo Sun Title: General Manager

External Photos

FCC ID LABEL: Label Location: FCC ID: 2BCWD-BTS07 Model No.: BTS07

Internal Photos ANT

Shenzhen CTB Testing Co., Ltd. FCC ID: 2BCWD-BTS07 Portable device According to §15.247(e)(i) and §1.1307(b)(1), systems operating under the provisions of this section shall be operated in a manner that ensures that the public is not exposed to radio frequency energy level in excess of the Commission’s guidelines. According to KDB447498 D01 General RF Exposure Guidance V06 The 1-g SAR and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)]·[√f(GHZ)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where: • f(GHZ) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. EDR: Modulation Channel Freq. (GHz) Conduct ed power (dBm) Conducte d power (mW) Tune-up power (dBm) Max tune-up power (dBm) Max tune-up power (mW) Distance (mm) Result calculatio n SAR Exclusion threshold SAR test exclusion 2.402 -1.527 0.70 -1±1 0.00 1.00 <5 0.30997 3.00 YES 2.441 -1.592 0.69 -1±1 0.00 1.00 <5 0.31247 3.00 YES 2.480 -2.885 0.51 -2±1 -1.00 0.79 <5 0.25018 3.00 YES 2.402 -0.784 0.83 0±1 1.00 1.26 <5 0.39023 3.00 YES 2.441 -0.873 0.82 0±1 1.00 1.26 <5 0.39338 3.00 YES 2.480 -2.177 0.61 -2±1 -1.00 0.79 <5 0.25018 3.00 YES 2.402 -0.09 0.98 0±1 1.00 1.26 <5 0.39023 3.00 YES 2.441 -0.248 0.94 0±1 1.00 1.26 <5 0.39338 3.00 YES 2.480 -1.49 0.71 -1±1 0.00 1.00 <5 0.31496 3.00 YES GFSK π /4DQPSK 8DQPSK Conclusion: For the max result : 0.39338≤ FCC Limit 3.0 for 1g SAR.

Product specification Quick Reference Date Antenna module on the system board Frequency 2.45GHz *1 Ant. Port Input Pwr. (dBm) 0 (Typ. BT class 2 output power) Tot. Rad. Pwr. (dBm) -2.3 (Input pwr – loss pwr) Peak EIRP(dBm) 1.3 Directivity (dBi) 1 (all direction antenna) Efficiency (dB) -2.3 (58.5%) Gain (dBi) 1.7 Maximum Power (dBm) 1.3 (XY-plane) Minimum Power (dBm) -4(XY-plane) Avg. Power (dBm) -0.5(XY-plane) Max/Min Ratio (dB) 5.3(XY-plane) Max/Avg Ratio (dB) 1.8(XY-plane) Min/Avg Ratio (dB) -3.5(XY-plane) Average Gain (dB) -0.5 (Avg Gain XY-plane) All the technical data and information contained herein are subject to change without prior notice Antenna Layout & module on the system board Antenna Gain Gain Table Unit in dBi @2.44GHz XY-plane XZ-plane YZ-plane Efficiency Peak Avg. Peak Avg. Peak Avg. Module Board 1.3 -0.5 1.7-3.8 1.1-3.058.5% Return Loss The Environment of Antenna Radiation Pattern 3D radiation pattern diagram XY-planeXZ-planeYZ-plane Manufacturer: Dongguan Dongguan Keweixing Electronic Technology Co., Ltd. Manufacturer's Address: Address 302, Floor 3, Huiqin Industrial Zone, No. 280 South Tangxia Avenue, Tangxia Town, Dongguan City

Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230911030RFX Report Tel: 4008-707-283Web: http://www.ctb-lab.net Page 1 of 58 TEST REPORT Compiled by: Reviewed by: Approved by: Zhou Kui Arron Liu Bin Mei / Director Note: If there is any objection to the inspection results in this report, please submit a written report to the company within 15 days from the date of receiving the report. The test report is effective only with both signature and specialized stamp. This result(s) shown in this report refer only to the sample(s) tested. Without written approval of Shenzhen CTB Testing Technology Co., Ltd. this report can’t be reproduced except in full. The tested sample(s) and the sample information are provided by the client. “*” indicates the testing items were fulfilled by subcontracted lab. “#” indicates the items are not in CNAS accreditation scope. Product Name: Bluetooth speaker FCC ID: 2BCWD-BTS07 Trademark: N/A Model Number: BTS07, A03, W11, W15, W1 Prepared For: Dongguan Keweixing Electronic Technology Co., Ltd. Address: Address 302, Floor 3, Huiqin Industrial Zone, No. 280 South Tangxia Avenue, Tangxia Town, Dongguan City Manufacturer: Dongguan Keweixing Electronic Technology Co., Ltd. Address: Address 302, Floor 3, Huiqin Industrial Zone, No. 280 South Tangxia Avenue, Tangxia Town, Dongguan City Prepared By: Shenzhen CTB Testing Technology Co., Ltd. Address: 1&2/F., Building A, No.26, Xinhe Road, Xinqiao, Xinqiao Street, Bao'an District, Shenzhen, Guangdong, China Sample Received Date: Aug. 31, 2023 Sample tested Date: Aug. 31, 2023 to Sep. 11, 2023 Issue Date: Sep. 11, 2023 Report No.: CTB230911030RFX Test Standards FCC Part15.247 ANSI C63.10:2013 Test Results PASS Remark: This is Bluetooth radio test report. Shenzhen CTB Testing Technology Co., Ltd. Report No.:CTB230911030RFX Report Tel: 4008-707-283 Web: http://www.ctb-lab.net Page 2 of 58 TABLE OF CONTENT Test Report Declaration Page 1. VERSION .......................................................................... 4 2. TEST SUMMARY ................................................................... 5 3. MEASUREMENT UNCERTAINTY ..................................................... 6 4. PRODUCT INFORMATION AND TEST SETUP .......................................... 7 4.1 Product Information .................................................................... 7 4.2 Test Setup Configuration ............................................................... 7 4.3 Support Equipment .................................................................... 7 4.4 Channel List .......................................................................... 8 4.5 Test Mode ............................................................................ 8 4.6 Test Environment ...................................................................... 8 5. TEST FACILITY AND TEST INSTRUMENT USED ....................................... 9 5.1 Test Facility ........................................................................... 9 5.2 Test Instrument Used .................................................................. 9 6. AC POWER LINE CONDUCTED EMISSION ............................................ 11 6.1 Block Diagram Of Test Setup .......................................................... 11 6.2 Limit ................................................................................ 11 6.3 Test procedure ....................................................................... 11 6.4 Test Result .......................................................................... 13 7. RADIATED SPURIOUS EMISSION ................................................... 15 7.1 Block Diagram Of Test Setup .......................................................... 15 7.2 Limit ................................................................................ 15 7.3 Test procedure ....................................................................... 16 7.4 Test Result .......................................................................... 17 8. BAND EDGE AND RF COUNDUCTED SPURIOUS EMISSIONS .......................... 26 8.1 Block Diagram Of Test Setup .......................................................... 26 8.2 Limit ................................................................................ 26 8.3 Test procedure ....................................................................... 26 8.4 Test Result .......................................................................... 27 9. COUDUCTED PEAK OUTPUT POWER ............................................... 34 9.1 Block Diagram Of Test Setup .......................................................... 34 9.2 Limit ................................................................................ 34 9.3 Test procedure ....................................................................... 34 9.4 Test Result .......................................................................... 35 10. 20DB OCCUPIED BANDWIDTH...................................................... 39 10.1 Block Diagram Of Test Setup ......................................................... 39 10.2 Limit ............................................................................... 39 10.3 Test procedure ...................................................................... 39 10.4 Test Result ......................................................................... 39 11. CARRIERFREQUENCIES SEPARATION .............................................. 43 11.1 Block Diagram Of Test Setup ......................................................... 43 11.2 Limit ............................................................................... 43 11.3 Test procedure ...................................................................... 43 11.4 Test Result ......................................................................... 43 12. HOPPING CHANNEL NUMBER ...................................................... 47 12.1 Block Diagram Of Test Setup ............…

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Radiated Emission Below 1G Above 1G Conducted emissions