WKA-BTCDPL4Wireless CD Player

MAXELL CORPORATION OF AMERICA Covered Equipment Certification Attestation Letter 8/31/2026 Nemko North America, Inc. 303 River Road Ottawa K1V 1H2 Canada ATTN.: Reviewing Engineer FCC ID: WKA-BTCDPL4 MAXELL CORPORATION OF AMERICA (“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. This includes certifying that the equipment for which authorization is sought does not include cybersecurity or anti-virus software produced or provided by Kaspersky Lab, Inc. or any of its successors and assignees, including equipment with integrated Kaspersky Lab, Inc. (or any of its successors and assignees) cybersecurity or anti-virus software pursuant to DA-24-886 and KDB 986446 D01 Covered Equipment Guidance section B(2a). Note: If the equipment for which the applicant seeks authorization is produced by any of the entities identified on the current Covered List, the applicant should include an explanation on why the equipment is not “covered” equipment. MAXELL CORPORATION OF AMERICA (“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. Signed: Printed name: ERIC WALBRECHT Title: SENIOR PRODUCT MANAGER Company Name: MAXELL CORPORATION OF AMERICA Date: 8/31/2026

MAXELL CORPORATION OF AMERICA * the applicant must designate a contact located in the United States for purposes of acting as the applicant’s agent for service of process, regardless of whether the applicant is a domestic or foreign entity. An applicant located in the United States may designate itself as the agent for service of process. U.S. Agent Designation for Service of Process - Certification Attestation Letter 8/31/2026 Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA ATTN.: Reviewing Engineer FCC ID: WKA-BTCDPL4 Applicant of FRN: 0026954198 Per section 2.911(d)(7) of the FCC rules, MAXELL CORPORATION OF AMERICA (“the applicant”) certifies that the equipment for which authorization is sought is designated to the following U.S. agent* for service of process: Company Name: MAXELL CORPORATION OF AMERICA FCC Registration Number (FRN): 0026954198 Physical U.S. Company Address: 3 Garret Mountain Plaza, Woodland Park New Jersey United States Contact Person: ERIC WALBRECHT Telephone No: 973-653-2462 Agent Email Address: [email protected] The above contact person accepts the obligation for service of process. The applicant accepts to maintain an agent for no less than one year after the grantee has terminated all marketing and importation or the conclusion of any Commission-related proceeding involving the equipment. Applicant Signed: Agent Signed: Signed: Signed: Printed name: ERIC WALBRECHT Printed name: ERIC WALBRECHT Title: SENIOR PRODUCT MANAGER Title: SENIOR PRODUCT MANAGER Company Name: MAXELL CORPORATION OF AMERICA Company Name: MAXELL CORPORATION OF AMERICA Date: 8/31/2026 Date8/31/2026

MAXELL CORPORATION OF AMERICA September 16, 2026 Nemko North America, Inc. 303 River Road Ottawa, Ontario, Canada K1V 1H2 REQUEST FOR CONFIDENTIALITY - FCC FCC ID: WKA-BTCDPL4 Pursuant to Sections 0.457(d) and 0.459 of the Commission’s Rules and FCC Guidance document 726920, we hereby request permanent confidential treatment of exhibits identified as such in the table below and request they are permanently withheld from public review based on the documents containing trade secrets and proprietary information not customarily released to the public. The public disclosure of this information might be harmful to the applicant and provide unjustified benefits to its competitors. Exhibit Type of Confidentiality Requested Block Diagrams ☒ Permanent ☐ Short Term External Photos ------------------ ☐ Short Term Internal Photos ☐ Permanent* ☐ Short Term Operation Description ☒ Permanent ☐ Short Term Parts List & Placement/BOM ☐ Permanent ☐ Short Term Tune-Up Procedure ☐ Permanent ☐ Short Term Schematic Diagrams ☒ Permanent ☐ Short Term Test Setup Photos ------------------ ☐ Short Term User’s Manual ☐ Permanent* ☐ Short Term The asterisked items (*) require further information to be provided in this justification letter before permanent confidentiality will be extended to these exhibits. Please refer to FCC KDB 726920 D01 found at: https://apps.fcc.gov/oetcf/kdb/forms/FTSSearchResultPage.cfm?switch=P&id=41731 and review section II, 3) regarding specific information that must accompany these requests. Note: any documents held under the Short-Term confidentiality will automatically become public after the requested time if an appropriate extension request has not been received. Any exhibits (i.e., schematic diagrams) that may have already been requested to have “Permanent” confidentiality as shown above need not be repeated under Short-Term confidentiality request. Sincerely, Signed: Printed name: ERIC WALBRECHT Title: SENIOR PRODUCT MANAGER Company Name: MAXELL CORPORATION OF AMERICA

External Photos M/N: BTCDPL-4 External Photos M/N: BTCDPL-4 External Photos M/N: BTCDPL-4 External Photos M/N: BTCDPL-4 External Photos M/N: BTCDPL-4

Internal Photos M/N: BTCDPL-4 Internal Photos M/N: BTCDPL-4 Internal Photos M/N: BTCDPL-4 Internal Photos M/N: BTCDPL-4 Internal Photos M/N: BTCDPL-4 Bluetooth antenna

Page 1 of 3 Report No. ESTE-R2608227 FCC RF EXPOSURE REPORT MAXELL CORPORATION OF AMERICA Wireless CD Player Model Number: BTCDPL-4 FCC ID: WKA-BTCDPL4 Applicant: MAXELL CORPORATION OF AMERICA Address: 3 Garret Mountain Plaza, Woodland Park, NJ 07424, United States. Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2608227 Date of Test: Aug. 04, 2026 to Aug. 25, 2026 Date of Report: Aug. 28, 2026 Page 2 of 3 Report No. ESTE-R2608227 1. Applicable Standards FCC Part 2(Section 2.1093) FCC KDB 447498 D04 Interim General RF Exposure Guidance v01 2. Exposure Evaluation of Portable or Mobile Devices Human exposure to RF emissions from portable devices (47 CFR §2.1093), as defined by the FCC, must be evaluated with respect to the FCC-adopted limits for SAR. Evaluation of mobile devices, as defined by the FCC, may also be performed with respect to SAR limits, but in such cases it is usually simpler and more cost-effective to evaluate compliance with respect to field strength or power density limits. For certain devices that are designed to be used in both mobile and portable configurations similar to those described in 47 CFR §2.1091(d)(4), such as certain desktop phones and wireless modem modules, compliance for mobile configurations is also satisfied when the same device is evaluated for SAR compliance in portable configurations. The test exclusions are applicable only when the minimum test separation distance is ≤ 50 mm and for transmission frequencies between 300 MHz and 6 GHz. When the minimum test separation distance is < 5 mm, a distance of 5 mm is applied to determine SAR test exclusion. Page 3 of 3 Report No. ESTE-R2608227 3. Evaluation Results Mode CH Peak output Power （dBm） Antenna Gain (dBi) effective radiated power （dBm） Target power (dBm) Max. Target power (mW) SAR Test Exemption Limit (mW) GFSK 2402 -1.39 -0.68 -4.22 -4±1 0.501 2.72 2441 -1.2 -0.68 -4.03 -4±1 0.501 2.72 2480 -1.86 -0.68 -4.69 -4±1 0.501 2.72 π/4- DQPSK 2402 -0.68 -0.68 -3.51 -3±1 0.631 2.72 2440 -0.4 -0.68 -3.23 -3±1 0.631 2.72 2480 -1.01 -0.68 -3.84 -3±1 0.631 2.72 BLE 1M 2402 -1.53 -0.68 -4.36 -4±1 0.501 2.72 2440 -1.29 -0.68 -4.12 -4±1 0.501 2.72 2480 -1.99 -0.68 -4.82 -4±1 0.501 2.72 BLE 2M 2402 -1.32 -0.68 -4.15 -4±1 0.501 2.72 2440 -0.96 -0.68 -3.79 -3±1 0.631 2.72 2480 -1.62 -0.68 -4.45 -4±1 0.501 2.72 Note: 1. Limited=3060*(0.5/20)^x, x=-log(60/(3060*√f)). 2. We choose f=2.48GHz (Highest frequency operate at bluetooth) to calculate MPE limit as higher frequency will have lower MPE limits. 3. SAR Test Exclusion Thresholds is 2.72mW for separation distance 5mm. Therefore, SAR test is not required. End of Test Report

Inverted F Antenna Specification Summary ITEMANT SPEC Model Name 2.4G ANT HorizontalVertical 2400MHz 2400MHz2500MHz2400MHz2400MHz 2500MHz Center Frequency -1.73-0.84-0.68-6.15-3.70-2.32 MAX. Gain -0 .68dBi PolarizationHorizontal and Vertical Azimuth Beam Pattern Omni-directional Impedance50 Ohm Antenna Length 38.20mm Manufacture ZHUHAI JIELI TECHNOLOGY CO.,LTD Antenna Photo & Length (mm) No. 333, Kexing Road, Nanping Town, Xiangzhou District, Zhuhai City Horizontal: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -40 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-1.73178-30.0815-8.48713 2450-0.845801-38.5605-7.88012 2500-0.685586-24.0318-6.79139 Vertical: 2400 MHz 2450 MHz 2500 MHz Power (dBm) Max: 0 Min: -30 Scale: 5/div Gain(dBi) Frequency (MHz) MaxMinAvg 2400-6.1530-24.1420-13.0295 2450-3.7054-26.5836-10.6700 2500-2.32122-30.4301-9.70536 ANT Test Labs：Attestation of Global Compliance Co., Ltd.

Page 1 of 40 Report No.ESTE-R2608226 FCC PART 15C TEST REPORT FOR CERTIFICATION On Behalf of MAXELL CORPORATION OF AMERICA Wireless CD Player Model Number: BTCDPL-4 FCC ID: WKA-BTCDPL4 Applicant: MAXELL CORPORATION OF AMERICA Address: 3 Garret Mountain Plaza, Woodland Park, NJ 07424, United States. Prepared By: EST Technology Co., Ltd. Chilingxiang, Qishantou, Santun, Houjie, Dongguan, Guangdong, China Tel: 86-769-83081888-808 Report Number: ESTE-R2608226 Date of Test: Aug. 04, 2026 to Aug. 25, 2026 Date of Report: Aug. 28, 2026 Page 2 of 40 Report No.ESTE-R2608226 TABLE OF CONTENTS Description Page TEST REPORT VERIFICATION .......................................................................................................... 3 1. GENERAL INFORMATION ................................................................................................................... 5 1.1. Description of Device (EUT) ............................................................................................................ 5 1.2. Antenna Information ......................................................................................................................... 5 1.3. Information of RF Cable ................................................................................................................... 5 2. SUMMARY OF TEST ........................................................................................................................... 6 2.1. Summary of test result ..................................................................................................................... 6 2.2. Test Facilities ..................................................................................................................................... 7 2.3. Measurement uncertainty ................................................................................................................ 8 2.4. Assistant equipment used for test .................................................................................................. 8 2.5. Block Diagram ................................................................................................................................... 8 2.6. Test Mode .......................................................................................................................................... 9 2.7. Power Setting of Test Software ...................................................................................................... 9 2.8. Duty Cycle .......................................................................................................................................... 9 2.9. Channel List ..................................................................................................................................... 10 2.10. Test Equipment List ...................................................................................................................... 11 3. 6DB BANDWIDTH ............................................................................................................................ 12 3.1. Limit ................................................................................................................................................... 12 3.2. Test Setup ........................................................................................................................................ 12 3.3. Spectrum Analyzer Setting ............................................................................................................ 12 3.4. Test Procedure ................................................................................................................................ 12 3.5. Test Result ....................................................................................................................................... 12 4. MAXIMUM PEAK OUTPUT POWER .................................................................................................. 13 4.1. Limit ................................................................................................................................................... 13 4.2. Test Setup ........................................................................................................................................ 13 4.3. Spectrum Analyzer Setting ............................................................................................................ 13 4.4. Test Procedure ................................................................................................................................ 13 4.5. Test Result ....................................................................................................................................... 13 5. POWER SPECTRAL DENSITY .......................................................................................................... 14 5.1. Limit ................................................................................................................................................... 14 5.2. Test Setup ........................................................................................................................................ 14 5.3. Spectrum Analyzer Setting ............................................................................................................ 14 5.4. Test Procedure ................................................................................................................................ 14 5.5. Test Result ....................................................................................................................................... 14 6. CONDUCTED BAND EDGE .............................................................................................................. 15 6.1. Limit ................................................................................................................................................... 15 6.2. Test Setup …

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Page 1 of 25 Report No.ESTE-R2608226 Appendix A: DTS Bandwidth Test Result TestMode Antenna Frequency[MHz] DTS BW [MHz] FL[MHz] FH[MHz] Limit[MHz] Verdict BLE_1M Ant1 2402 0.681 2401.655 2402.336 0.5 PASS BLE_1M Ant1 2440 0.660 2439.670 2440.330 0.5 PASS BLE_1M Ant1 2480 0.660 2479.667 2480.327 0.5 PASS BLE_2M Ant1 2402 1.110 2401.448 2402.558 0.5 PASS BLE_2M Ant1 2440 1.224 2439.388 2440.612 0.5 PASS BLE_2M Ant1 2480 1.104 2479.490 2480.594 0.5 PASS Page 2 of 25 Report No.ESTE-R2608226 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Page 3 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2440-PASS Page 4 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2480-PASS Page 5 of 25 Report No.ESTE-R2608226 Appendix B: Maximum conducted output power Test Result Peak TestMode Antenna Frequency[MHz] Conducted Peak Power[dBm] Conducted Limit[dBm] Verdict BLE_1M Ant1 2402 -1.53≤30 PASS BLE_1M Ant1 2440 -1.29≤30 PASS BLE_1M Ant1 2480 -1.99≤30 PASS BLE_2M Ant1 2402 -1.32≤30 PASS BLE_2M Ant1 2440 -0.96≤30 PASS BLE_2M Ant1 2480 -1.62≤30 PASS Test Graphs Peak BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS Page 6 of 25 Report No.ESTE-R2608226 BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS Page 7 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2440-PASS BLE_2M-Ant1-2480-PASS Page 8 of 25 Report No.ESTE-R2608226 Page 9 of 25 Report No.ESTE-R2608226 Appendix C: Maximum power spectral density Test Result TestMode Antenna Frequency[MHz] Result[dBm/3kHz] Limit[dBm/3kHz] Verdict BLE_1M Ant1 2402 -17.74 ≤8.00 PASS BLE_1M Ant1 2440 -17.44 ≤8.00 PASS BLE_1M Ant1 2480 -18.31 ≤8.00 PASS BLE_2M Ant1 2402 -21.13 ≤8.00 PASS BLE_2M Ant1 2440 -20.85 ≤8.00 PASS BLE_2M Ant1 2480 -21.41 ≤8.00 PASS Page 10 of 25 Report No.ESTE-R2608226 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Page 11 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2440-PASS Page 12 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2480-PASS Page 13 of 25 Report No.ESTE-R2608226 Appendix D: Reference level measurement Test Result TestMode Antenna Freq(MHz) Max.Point[MHz] Result[dBm] BLE_1M Ant1 2402 2401.77 -2.74 BLE_1M Ant1 2440 2440.27 -2.22 BLE_1M Ant1 2480 2480.24 -3.13 BLE_2M Ant1 2402 2401.50 -2.94 BLE_2M Ant1 2440 2440.49 -2.58 BLE_2M Ant1 2480 2480.02 -2.95 Page 14 of 25 Report No.ESTE-R2608226 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2440-PASS BLE_1M-Ant1-2480-PASS Page 15 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2402-PASS BLE_2M-Ant1-2440-PASS Page 16 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2480-PASS Page 17 of 25 Report No.ESTE-R2608226 Appendix E: Band edge measurements Test Result TestMod e Antenn a ChNam e Frequency[MHz ] RefLevel[dBm ] Result[dBm ] Limit[dBm ] Verdic t BLE_1M Ant1 Low 2402 -2.74 -39.41 ≤-22.74 PASS BLE_1M Ant1 High 2480 -3.13 -39.51 ≤-23.13 PASS BLE_2M Ant1 Low 2402 -2.94 -36.23 ≤-22.94 PASS BLE_2M Ant1 High 2480 -2.95 -39.38 ≤-22.95 PASS Page 18 of 25 Report No.ESTE-R2608226 Test Graphs BLE_1M-Ant1-2402-PASS BLE_1M-Ant1-2480-PASS BLE_2M-Ant1-2402-PASS Page 19 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2480-PASS Page 20 of 25 Report No.ESTE-R2608226 Appendix F: Conducted Spurious Emission Test Result TestMode Antenna Frequency[MHz] FreqRange [MHz] RefLevel [dBm] Result[dBm] Limit[dBm] Verdict BLE_1M Ant1 2402 30~26500 -2.74 -41.93 ≤-22.74 PASS BLE_1M Ant1 2440 30~26500 -2.22 -40.49 ≤-22.22 PASS BLE_1M Ant1 2480 30~26500 -3.13 -41.22 ≤-23.13 PASS BLE_2M Ant1 2402 30~26500 -2.94 -41.67 ≤-22.94 PASS BLE_2M Ant1 2440 30~26500 -2.58 -42.32 ≤-22.58 PASS BLE_2M Ant1 2480 30~26500 -2.95 -42.15 ≤-22.95 PASS Page 21 of 25 Report No.ESTE-R2608226 Test Graphs BLE_1M-Ant1-2402-30~26500-PASS BLE_1M-Ant1-2440-30~26500-PASS BLE_1M-Ant1-2480-30~26500-PASS Page 22 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2402-30~26500-PASS BLE_2M-Ant1-2440-30~26500-PASS Page 23 of 25 Report No.ESTE-R2608226 BLE_2M-Ant1-2480-30~26500-PASS Page 24 of 25 Report No.ESTE-R2608226 Appendix G: Duty Cycle Test Result TestMode Antenna Frequency[MHz] ON Time [ms] Period [ms] Duty Cycle [%] Duty Cycle Factor[dB] BLE_1M Ant1 2440 2.13 2.50 85.20 0.70 BLE_2M Ant1 2440 1.08 2.51 43.03 3.66 Page 25 of 25 Report No.ESTE-R2608226 Test Graphs NTNV-BLE_1M-Ant1-2440 NTNV-BLE_2M-Ant1-2440

Radiated emission test: Below 1GHz Radiated emission test: Above 1GHz Conducted emission test: Connect EUT antenna terminal test