2BO3P-GROOVZULTRAGroovz Ultra Open Ear Headphones

FCC Warning 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. NOTE 1: 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. NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.

Rev 1/26/2023 JTB Products, LLC Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: August 06, 2026 Ref: Attestation Statements Part 2.911(d)(5)(i) Filing FCC ID: 2BO3P‑GROOVZULTRA [JTB Products, LLC] (“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. [JTB Products, LLC] (“the applicant”) certifies 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). Device is inherently compliant based on hardware limitations or software controls. or A Software Bill of Materials (SBOM) is provided to the TCB for review, and The end-user or third parties cannot install additional software on this device. Sincerely, Name: Brad Harper Signature: Rev 1/26/2023 JTB Products, LLC Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 USA Date: August 06, 2026 Ref: Attestation Statements Part 2.911(d)(5)(ii) Filing FCC ID: 2BO3P‑GROOVZULTRA [JTB Products, LLC] (“the applicant”) certifies that, as of the date of the filing of the application, the applicant is not identified on the Covered List (as a specifically named entity or any of its subsidiaries or affiliates) as an entity producing “covered” equipment. Sincerely, Name: Brad Harper Signature:

JTB Products, LLC Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: August 06, 2026 SUBJECT: FCC SDoC declaration for FCC ID: 2BO3P‑GROOVZULTRA To Whom It May Concern: I, the undersigned, hereby states 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, and will apply the Supplier's Declaration of Conformity procedure to the class B computer peripheral portion of this composite device. I understand the following FCC requirements: 1. Devices subject to the SDoC procedure are required to be tested to show compliance with the FCC technical regulations by a recognized accredited testing laboratory. The testing laboratory must be accredited by a Commission approved accreditation body or designated under the terms of a government-to- government Mutual Recognition Agreement (MRA). A listing of those accredited testing laboratories that have been recognized by the Commission is published on the FCC Webpage: https://apps.fcc.gov/oetcf/eas/reports/TestFirmSearch.cfm (Select the "accredited" option to search for FCC recognized accredited test firms.) 2. Pt 2.1077 contains the list of information that must be included in the Supplier's Declaration of Conformity, which must be supplied with each product sold. The SDoC compliance info shall be included in the User’s Manual or as a separate sheet. The info must contain the name, address, and phone number of the responsible party, which must be located within the United States. According to 2.909(b), the responsible party is either the Manufacturer or if the product is imported the Importer. Regards, JTB Products, LLC Name: Brad Harper Signature:

JTB Products, LLC U.S. Agent Letter of Attestation To: Federal Communications Commission 7435 Oakland Mills Road, Columbia, MD 21046, USA Date: August 06, 2026 Ref: Attestation Statement – Part 2.911(d)(7) filing FCC ID: 2BO3P‑GROOVZULTRA JTB Products, LLC(“the applicant”) certifies that, as of the date of the filing of the application, JTB Products, LLC (“the agent”) is our designated U.S. agent for service of process for the above reference FCC ID. The applicant accepts 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. The applicant further acknowledges it is our responsibility to inform the FCC whenever the agent information changes. JTB Products, LLC ("the agent) understand it is the agent's obligation 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. Designated U.S. Agent Signature: Company Name: JTB Products, LLC FRN: 0036977205 Address: 827 Lincoln Avenue, Suite B7, West Chester, Pennsylvania, 19380, United States Contact Person: Brad Harper Tel: 214-621-6239 Email: [email protected] Applicant Company Name: JTB Products, LLC FRN: 0036977205 Address: 827 Lincoln Avenue, Suite B7, West Chester, Pennsylvania, 19380, United States Signature: Contact Person: Brad Harper Tel: 214-621-6239 Email: [email protected]

Rev 11/20/07 JTB Products, LLC Date: August 06, 2026 Federal Communications Commission Authorization and Evaluation Division Confidentiality Request regarding application for certification of FCC ID: 2BO3P‑GROOVZULTRA Pursuant to Sections 0.457 and 0.459 of the Commission’s Rules, we hereby request confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name (Block Diagram, Schematics, Operational Description) (Block Diagram.pdf, Schematics.pdf, Operational Description.pdf) The above materials contain trade secrets and proprietary information not customarily released to the public. The public disclosure of these materials may be harmful to the applicant and provide unjustified benefits to its competitors. The applicant understands that pursuant to Section 0.457 of the Rules, disclosure of this application and all accompanying documentation will not be made before the date of the Grant for this application. Pursuant to DA04-1705 June 15, 2004 of the Commission’s public notice, we also request temporary confidential treatment of information accompanying this application as outlined below: Exhibit Type File Name For 45 days, pursuant to Public Notice DA 04-1705. OR For 180 days pursuant to KDB 726920 D01. It is our understanding that all measurement test reports, FCC ID label format and correspondence during the certification review process cannot be granted as confidential documents and this information will be available for public review once the grant of equipment authorization is issued. Sincerely, Name: Brad Harper Rev 11/20/07 Signature:

JTB Products, LLC Federal Communications Commission Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Date: August 06, 2026 SUBJECT: FCC Application for FCC ID: 2BO3P‑GROOVZULTRA To Whom It May Concern: We, the undersigned, hereby authorize Lahm Peng at Shenzhen CCUT Quality Technology Co., Ltd. on our behalf, to apply to the Federal Communications Commission on our equipment. Any and all acts carried out by Lahm Peng at Shenzhen CCUT Quality Technology Co., Ltd. on our behalf shall have the same effect as acts of our own. This is to advise that we are in full compliance with the Anti- Drug Abuse Act. We, the applicant, are not subject to a denial of federal benefits pursuant to Section 5301 of the Anti-Drug Act of 1988, 21 USC853a, and no party to the application is subject to a denial of federal benefits pursuant to that section. Regards, Name: Brad Harper Signature:

Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report Annex A. EUT External Photos Model: GROOVZ ULTRA EUT View 1 EUT View 2 Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report EUT View 3 EUT View 4 Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report EUT View 5 EUT View 6 Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report EUT View 7

Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report Annex D. Label and Information FCC Label Sample Label Size:1cm*0.3cm FCC Label Specifications Text is Black in color and is justified. Labels are printed in indelible ink on permanent adhesive backing or silk-screened onto the EUT or shall be affixed at a conspicuous location on the EUT. Where the EUT is constructed in two or more sections connected by wires and marketed together, the above statement is required to be affixed only to the main control unit. When the EUT is so small or for such use that it is not practicable to place the statement on it, the above information shall be placed in a prominent location in the instruction manual or pamphlet supplied to the user or, alternatively, shall be placed on the container in which the device is marketed. FCC Label Location

Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report Annex B. EUT Internal Photos Model: GROOVZ ULTRA EUT Internal View 1 EUT Internal View 2 SMD Antenna SMD Antenna Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report EUT Internal View 3 EUT Internal View 4

FCC ID: 2BO3P‑GROOVZULTRA RF Exposure Evaluation According to KDB 447498 D01 General RF Exposure Guidance v06 and part 2.1093，Unless specifically required by the published RF exposure KDB procedures, standalone 1-g head or body and 10-g extremity SAR evaluation for general population exposure conditions, by measurement or numerical simulation, is not required when the corresponding SAR Test Exclusion Threshold condition(s), listed below, is (are) satisfied. For 100 MHz to 6 GHz and test separation distances ≤ 50 mm, the 1-g and 10-g SAR test exclusion thresholds are determined by the following: [(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 Here, The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction. For BR+EDR Max Conducted Power(dBm) Tune-up Power(dBm) Max Tune-up Power(dBm) Max Power(mW) Frequency(MHz) Min. distance(mm) Calc. thresholds limit 0.45 0(±1) 1 1.259 2441 5 0.3934 3.0 So a SAR test is not required

深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 1 OF 12 2.0X1.2X0.2 (mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification 1.Product Number YF 2012 F4 P 2G45 02 1 2 3 4 5 6 Telephone：13530931724 Email address：[email protected] 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 2 OF 12 2.Features *Stable and reliable in performances *Low temperature coefficient of frequency *Low profile, compact size *RoHS compliance *SMT processes compatible 3.Applications *Bluetooth earphone systems *Hand-held devices when WiFi /Bluetooth functions are needed, e.g., Smart phone. *IEEE802.11 b/g/n *ZigBee *Wireless PCMCIA cards or USB dongle 4.Description Yingfeng chip antenna series are specially designed for WiFi/Bluetooth applications. Based on yingfeng proprietary design and processes, this chip antenna has excellent stability and sensitivity to consistently provide high signal reception efficiency. 5.Electrical Specifications (80 x 40 mm 2 ground plane) 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 3 OF 12 5-1. Electrical Table Characteristics Specifications Unit Outline Dimensions 2.0x1.2x0.2 mm Working Frequency 2400~2500 MHz VSWR 2 Max. Impedance 50  Polarization Linear Polarization Gain Peak 2.5 (typical) dBi Efficiency 75 (typical) % 5-2. Return Loss & VSWR Return Loss (S 11 ) VSWR(S 11 ) 6. Antenna Dimensions & Test Board (unit: mm) a. Antenna Dimensions 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 4 OF 12 b. Test Board with Antenna 80 40 Unit: mm 7. Radiation Pattern (80 x 40 mm 2 ground plane) 7-1. 3D Gain Pattern @ 2442 MHz 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 5 OF 12 Y X Z 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 6 OF 12 7-2. 3D Efficiency Table Frequency( MHz) 2400 2410 2420 2430 2442 2450 2460 2470 2480 2490 2500 Efficiency (dB) -1.4 -1.0 -0.9 -0.7 -0.7 -0.8 -0.9 -1.1 -1.2 -1.3 -1.4 Efficiency (%) 72.8 73.7 74.3 74.4 75.5 75.0 74.0 73.6 73.1 72.6 71.5 Gain (dBi) 2.1 2.2 2.3 2.4 2.5 2.5 2.4 1.8 1.7 1.6 1.4 7-3. 3D Efficiency vs. Frequency 8. Layout Guide a. Solder Land Pattern: Land pattern for soldering (gray marking areas) is as shown below. Depending on Efficiency vs. Frequency 50 60 70 80 90 100 24002410242024302442245024602470248024902500 Frequency(MHz) Efficiency(%) 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 7 OF 12 Customer’s requirement, matching circuit as shown below is also recommended. Top View Bottom View 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 8 OF 12 Unit： mm 9. Frequency tuning a. Chip antenna tuning scenario： b. Matching circuit：(Center frequency is about 2442 MHz @ 80 x 40 mm 2 ground plane) System Matching Circuit Component Location Description Vendor Toleranc e 1 1.2 pF* Murata (0402) ±0.1 pF 2 10PF* Murata(0402) ±0.5 PF 3 N/A* - - Fine tuning element 4 1.5 pF* Murata (0402) ±0.1 pF *Typical reference values which may need to be changed when circuit Matching circuit Feed 4. Fine tuning elemet 1 2 3 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 9 OF 12 boards or part vendors are different. c. Fine tuning element vs. Center frequency 10. Soldering Conditions a. Typical Soldering Profile for Lead-free Process Time 60-180s 60-150s 20- Pre- 150-200° 217°C 260° Temperature (°C) 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 10 OF 12 11. Packing (1) Quantity/Reel: 6000 pcs/Reel (2) Plastic tape: 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason Checked by : Jason Approved by：MR.FANG TITLE：2.0 x 1.2 x 0.2(mm) WiFi/Bluetooth Ceramic Chip Antenna (YF2012C) Engineering Specification DOCUMENT YF2012F4P2G4502 REV. NO. C PAGE 11 OF 12 深圳市迎丰天线技术有限公司 SHEN ZHEN YINGFENG ANTENNA TECHNOLOGYCO.,LTD Prepared by : JIEXI Designed by : Jason …

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Report No: SSP26070058-1 FCC Test Report Page 1 of 70 FCC TEST REPORT FCC ID: 2BO3P‑GROOVZULTRA Report No. : SSP26070058-1 Applicant : JTB Products, LLC Product Name : Groovz Ultra Open Ear Headphones Model Name : GROOVZ ULTRA Test Standard : FCC Part 15.247 Date of Issue : 2026-07-21 Shenzhen CCUT Quality Technology Co., Ltd. 1F, Building 35, Changxing Technology Industrial Park, Yutang Street, Guangming District, Shenzhen, Guangdong, China; (Tel.:+86-755-23406590 website: www.ccuttest.com) This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd. Report No: SSP26070058-1 FCC Test Report Page 2 of 70 Test Report Basic Information Applicant..................................: JTB Products, LLC Address of Applicant...............: 827 Lincoln Avenue, Suite B7, West Chester, Pennsylvania, 19380, United States Manufacturer..........................: JTB Products, LLC Address of Manufacturer........: 827 Lincoln Avenue, Suite B7, West Chester, Pennsylvania, 19380, United States Product Name.........................: Groovz Ultra Open Ear Headphones Brand Name.............................: - Main Model..............................: GROOVZ ULTRA Series Models..........................: - Test Standard..........................: FCC Part 15 Subpart C ANSI C63.4-2014 ANSI C63.10-2020 + Cor. 1-2023+C63.10a-2024 + Errata to C63.10a-2024 Date of Test .............................: 2026-07-02 to 2026-07-10 Test Result...............................: PASS Tested By ................................: (Coke Huang) Reviewed By............................: (Lorzix Luo) Authorized Signatory............: (Lahm Peng) Note : This test report is limited to the above client company and the product model only. It may not be duplicated without prior permitted by Shenzhen CCUT Quality Technology Co., Ltd.. All test data presented in this test report is only applicable to presented test sample. Report No: SSP26070058-1 FCC Test Report Page 3 of 70 CONTENTS 1. General Information ....................................................................................................................................................5 1.1 Product Information .............................................................................................................................................5 1.2 Test Setup Information..........................................................................................................................................6 1.3 Compliance Standards ...........................................................................................................................................7 1.4 Test Facilities ........................................................................................................................................................7 1.5 List of Measurement Instruments ..........................................................................................................................8 1.6 Measurement Uncertainty .....................................................................................................................................9 2. Summary of Test Results ........................................................................................................................................... 10 3. Antenna Requirement ............................................................................................................................................... 11 3.1 Standard and Limit.............................................................................................................................................. 11 3.2 Test Result .......................................................................................................................................................... 11 4. Conducted Emissions ................................................................................................................................................ 12 4.1 Standard and Limit.............................................................................................................................................. 12 4.2 Test Procedure.................................................................................................................................................... 12 4.3 Test Data and Results .......................................................................................................................................... 13 5. Radiated Emissions ................................................................................................................................................... 16 5.1 Standard and Limit.............................................................................................................................................. 16 5.2 Test Procedure.................................................................................................................................................... 16 5.3 Test Data and Results .......................................................................................................................................... 18 6. Band-edge Emissions(Radiated) ............................................................................................................................... 22 6.1 Standard and Limit.............................................................................................................................................. 22 6.2 Test Procedure.................................................................................................................................................... 22 6.3 Test Data and Results .......................................................................................................................................... 22 7. Frequency Hopping System ...........…

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Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report Annex C. Test Photos Conducted Emission Test View 1 Radiated Emission Test View Below 1GHz (Left headphone) Report No: SSP26070058-1 FCC ID: 2BO3P‑GROOVZULTRA Annex of Test Report Radiated Emission Test View Above 1GHz (Left headphone)