2BS3M-LWTXTransmitter for LW headphones

, 7635.5MHz 7635.5MHz This UWB devices may not be employed for the operation of toys. Operation on board an aircraft, a ship or a satellite is prohibited. This equipment may only be operated indoors. Operation outdoors is in violation of 47 U.S.C. 301 and could subject the operator to serious legal penalties.

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Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501X13479E-RF-TSP Page1 / 5 EUT EXTERNAL PHOTOS Conducted Emissions - Front View Conducted Emissions - Side View Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501X13479E-RF-TSP Page2 / 5 Radiated EmissionsView (Below 30MHz) Radiated EmissionsView (Below 960Hz) Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501X13479E-RF-TSP Page3 / 5 Radiated EmissionsView ([email protected]) Radiated EmissionsView (Above 1GHz @0.5m) Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501X13479E-RF-TSP Page4 / 5 Radiated EmissionsView (Above 1GHz @3m) Radiated EmissionsView (18-40 [email protected]) Bay Area Compliance Laboratories Corp. (Shenzhen) EXHIBIT No.: 2501X13479E-RF-TSP Page5 / 5 RF Conducted Test *****END *****

Proprietary and confidential. Do not distribute. All rights reserved by LEWITT Development GmbH. 1 LEWITT LW TX Antenna 1.1 Specification summary • Type: Monopole antenna • Model: LWT-UWB-ANT • Size: approximately 12.47 x 9.70 x 0.3mm • Supported frequency range: 6GHz to 9.5GHz o For ETSI we use: 6924MHz to 8347MHz o For FCC we use: 7645MHz to 9208Mhz or 6924MHz to 8347MHz • Max. Gain: See gain table for specific frequency range • Material: Etched sheet metal • Manufacturer: Lewitt GmbH Schanzstraße 14/1.1 1150 Wien Austria 2.1 Change history V1 Created 10 th September 2025 Tobias Ecker V2 Updated model number 12 th March 2026 Tobias Ecker V3 Company address 28 th April 2026 Tobias Ecker V4 Added used frequencies 19 th May 2026 Tobias Ecker V5 Gain table format 21 st July 2026 Tobias Ecker Proprietary and confidential. Do not distribute. All rights reserved by LEWITT Development GmbH. 2 3.1 Antenna Gain Frequency Antenna Gain 30MHz...1,6GHz -20.78 dBi 1,6GHz...2,7GHz -9.06 dBi 2,7GHz...3,735GHz 2.75 dBi 3,735GHz...4,8GHz 4.24 dBi 4,8GHz...6,0GHz 4.55 dBi 6,0GHz...10,2GHz 7.76 dBi 10,2GHz...26GHz 6.56 dBi *0.30±0.03 *0.40 1.00±0.10 1.50 142.59° 9.70 12.47 2.25 1.00±0.10 1.50 02 NOTES - (UNLESS OTHERWISE SPECIFIED): ALL MATERIALS MUST MEET EU ROHS 3.0, CHINA ROHS, REACH ENVIRONMENTAL REQUIREMENTS.1. 所有材料必须符合EU ROHS 3.0、CHINA ROHS, REACH环保要求 APPERANCE ACCORDING TO < LEWITT GENERAL COSMETIC STANDARD FOR PLASTIC AND METAL PART>.2. 外观根据< LEWITT GENERAL COSMETIC STANDARD FOR PLASTIC AND METAL PART> THE RELIABILITY OF PARTS MUST MEET <LEWITT RELIABILITY TEST STANDARD> 3. 零件可靠性需满足<LEWITT RELIABILITY TEST STANDARD> DIMENSIONS MARKED WITH THIS * NOTE AND IN RED COLOR ARE TO BE CONSIDERED CRITICAL AND SPC 4. 所有带*号的尺寸为重点管控尺寸，IQC 必须检验 DIMENSIONS MARKED WITH THIS BOX ARE TO BE CONSIDERED CPK DIMENSIONS5. 所有带 的为CPK尺寸 6 . MOLD/PART FINISH: SEE SHEET 2 模具表面处理： 见SHEET 2 V A A A A VERSIONDESCRIPTIONBYDATE 01 Initial released AlessandroMay-24-2024 02Updated lengthAlessandroMay-13-2025 A Adjust dim tolerance and release for MP JMar-12-2026 Ratio Units Versions Finish： VER Changed Description ChangerDate 01 0202 0.2 设 计 Design 比 例 Scare 审 核 Check 批 准 Approval 1.2 0.5 0.2 120 315 0.8 1000 315 0.3 2 0.3 0.2 0.1 至 Until 大于 Above F 30 120 6 30 0 6 0.1 0.15 0.05 C M 0.5 0.8 单 位 Unit 材质Material： 项目编号Project Nr： 5:1 mm 名称Parts： 表面处理工艺 Finish: 图中未注明公差按此框标准 If the tolerance is not specified on the drawing, follow the standard of this box 12345678 12345678 A B C D E F G H I J A B C D E F G H I J 料号P/N： 页数 Sheet 1 of 1 Alessandro May-13-2025 5194 SPCC,T=0.30mm Nickel plated, solderable A HUSB-UWB-antenna 视 图 View 版 本 Version LWT-UWB-ANT HUSB, Monopoly#1, One leg, Abs gain 02.Apr.2024WIRELESS PERFORMANCE MATTERS38 HUSB, Monopoly#1, One leg, Vert Pol 02.Apr.2024WIRELESS PERFORMANCE MATTERS39 HUSB, Monopoly#1, One leg,Totefficiency 02.Apr.2024WIRELESS PERFORMANCE MATTERS37

Note: The information marked # is provided by the applicant, the laboratory is not responsible for its authenticity and this information can affect the validity of the result in the test report. Customer model name, addresses, names, trademarks etc. are included. This report cannot be reproduced except in full, without prior written approval of the Company. Unless otherwise stated the results shown in this test report refer only to the sample(s) tested. This report is valid only with a valid digital signature. The digital signature may be available only under the Adobe software above version 7.0. This report must not be used by the customer to claim product certification, approval, or endorsement by NVLAP or any agency of the U.S. Government. This report may contain data that are not covered by the NVLAP accreditation and are marked with an asterisk “▼”. Bay Area Compliance Laboratories Corp. (Shenzhen) 5F(B-West) , 6F, 7F, the 3rd Phase of Wan Li Industrial Building D, Shihua Rd, FuTian Free Trade Zone, Shenzhen, China Tel: +86-755-33320018 Fax: +86-755-33320008 www.baclcorp.com.cn TR-EM-RF303 Page 1 of 76 Version 3.0 TEST REPORT Applicant/Manufacturer:Lewitt GmbH Address:Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria Report Number:2501X13479E-RF-00 FCC ID:2BS3M-LWTX Test Standard (s) FCC PART 15F Sample Description Product Type:Transmitter for LW headphones Model No.:LW TX Multiple Model(s) No.:N/A Trade Mark: Date Received:2025-09-18 Issue Date:2026-08-05 Test Result:Pass ▲ ▲ In the configuration tested, the EUT complied with the standards above. Prepared and Checked By:Approved By: Wills YuNancy Wang RF EngineerRF Supervisor Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-00 TR-EM-RF303 Page 2 of 76 Version 3.0 TABLE OF CONTENTS DOCUMENT REVISION HISTORY ..........................................................................................................................4 GENERAL INFORMATION ........................................................................................................................................5 PRODUCT DESCRIPTION FOR EQUIPMENT UNDER TEST (EUT)......................................................................................5 OBJECTIVE ....................................................................................................................................................................5 TEST METHODOLOGY....................................................................................................................................................5 MEASUREMENT UNCERTAINTY .....................................................................................................................................6 TEST FACILITY ..............................................................................................................................................................6 SYSTEM TEST CONFIGURATION ...........................................................................................................................7 DESCRIPTION OF TEST CONFIGURATION .......................................................................................................................7 EQUIPMENT MODIFICATIONS ........................................................................................................................................7 EUT EXERCISE SOFTWARE ...........................................................................................................................................7 SUPPORT EQUIPMENT LIST AND DETAILS .....................................................................................................................7 EXTERNAL I/O CABLE...................................................................................................................................................7 BLOCK DIAGRAM OF TEST SETUP .................................................................................................................................8 SUMMARY OF TEST RESULTS ..............................................................................................................................10 TEST EQUIPMENT LIST ..........................................................................................................................................11 FCC §2.1091, §1.1310 - RF EXPOSURE ....................................................................................................................13 FCC §15.203 & §15.517(A)(3) - ANTENNA REQUIREMENT ...............................................................................14 APPLICABLE STANDARD .............................................................................................................................................14 FCC §15.517(A) - GENERAL REQUIREMENT ......................................................................................................15 APPLICABLE STANDARD .............................................................................................................................................15 RESULT .......................................................................................................................................................................15 FCC § 15.207 (A) AC LINE CONDUCTED EMISSIONS .......................................................................................16 APPLICABLE STANDARD .............................................................................................................................................16 EUT SETUP .................................................................................................................................................................16 EMI TEST RECEIVER SETUP ........................................................................................................................................16 TEST PROCEDURE...............................................................................…

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Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-00 TR-EM-RF303 Page 13 of 76 Version 3.0 FCC §2.1091, §1.1310 - RF EXPOSURE Applicable Standard According to FCC §2.1091, §1.1310, systems operating under the provisions of this section shall be operated in a manner that ensure that the public is not exposed to radio frequency energy level in excess of the Commission’s guideline. Limits for Maximum Permissible Exposure (MPE) (§1.1310, §2.1091) Limits for General Population/Uncontrolled Exposure Limits for General Population/Uncontrolled Exposure Frequency Range (MHz) Electric Field Strength (V/m) Magnetic Field Strength (A/m) Power Density (mW/cm 2 ) Averaging Time (Minutes) 0.3-1.346141.63*(100)30 1.34-30824/f2.19/f*(180/f 2 )30 30-30027.50.0730.230 300-1500//f/150030 1500-100,000//1.030 f = frequency in MHz * = Plane-wave equivalent power density Calculated Formulary: Predication of MPE limit at a given distance S = 2 4 R PG  S = power density (in appropriate units, e.g. mW/cm2) P = power input to the antenna (in appropriate units, e.g., mW). G = power gain of the antenna in the direction of interest relative to an isotropic radiator, the power gain factor, is normally numeric gain. R = distance to the center of radiation of the antenna (appropriate units, e.g., cm) Test Result: For worst case: Maximum Tune-up EIRP # Mode Frequency (MHz) (dBm)(mW) Evaluation Distance (cm) Power Density (mW/cm 2 ) MPE Limit (mW/cm 2 ) UWB7635.5-9.0 0.13 200.00003 1 UWB8426.5 -12.00.06 200.00001 1 Note: The tune up power was declared by the applicant. To maintain compliance with the FCC’s RF exposure guidelines, place the equipment at least 20cm from nearby persons. Result: Compliant.

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-INP Page 1 of 4 EXHIBIT C - EUT INTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-INP Page 2 of 4 This MCU has disabled the wireless function. Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-INP Page 3 of 4 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-INP Page 4 of 4 UWB ANT

Lewitt GmbH Address: Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria Tel: +43 06642486048 Email: [email protected] Date: 2026-07-27 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Compliant to FCC § 15.521 technical requirements for FCC ID: 2BS3M-LWTX (a)UWB devices may not be employed for the operation of toys. Operation onboard an aircraft, a ship or a satellite is prohibited. Reply: Compliant. The final device should not use for toys and device operation onboard an aircraft, a ship or a satellite. The device is a transmitter for LW headphones, mainly used for recording studios, etc. (b) Manufacturers and users are reminded of the provisions of § 15.203 and 15.204. Reply: Compliant, use an antenna permanently attached to the device. Antenna cannot be modifications. (c) Emissions from digital circuitry used to enable the operation of the UWB transmitter shall comply with the limits in § 15.209, rather than the limits specified in this subpart, provided it can be clearly demonstrated that those emissions from the UWB device are due solely to emissions from digital circuitry contained within the transmitter and that the emissions are not intended to be radiated from the transmitter's antenna. Emissions from associated digital devices, as defined in § 15.3(k), e.g., emissions from digital circuitry used to control additional functions or capabilities other than the UWB transmission, are subject to the limits contained in Subpart B of this part. Reply: All radiation spurious emissions are compliant to FCC § 15.209&15.517. (d) Within the tables in §§ 15.509, 15.511, 15.513, 15.515, 15.517, and 15.519, the tighter emission limit applies at the band edges. Radiated emission levels at and below 960 MHz are based on measurements employing a CISPR quasi-peak detector. Radiated emission levels above 960 MHz are based on RMS average measurements over a 1 MHz resolution bandwidth. The RMS average measurement is based on the use of a spectrum analyzer with a resolution bandwidth of 1 MHz, an RMS detector, and a 1 millisecond or less averaging time. Unless otherwise stated, if pulse gating is employed where the transmitter is quiescent for intervals that are long compared to the nominal pulse repetition interval, measurements shall be made with the pulse train gated on. Alternative measurement procedures may be considered by the Commission. Reply: According to testing requirements, all radiation spurious emissions are compliant to UWB limits for FCC 15.517, including for the tighter emission limit applies at the band edges. (e) The frequency at which the highest radiated emission occurs, f M , must be contained within the UWB bandwidth. Reply: Compliant. The f M is contained within the UWB bandwidth, such as 10dB bandwidth. (f) Imaging systems may be employed only for the type of information exchange described in their specific definitions contained in § 15.503. The detection of tags or the transfer or data or voice information is not permitted under the standards for imaging systems. Reply: The product is not used for imaging system. (g) When a peak measurement is required, it is acceptable to use a resolution bandwidth other than the 50 MHz specified in this subpart. This resolution bandwidth shall not be lower than 1 MHz or greater than 50 MHz, and the measurement shall be centered on the frequency at which the highest radiated emission occurs, fM. If a resolution bandwidth other than 50 MHz is employed, the peak EIRP limit shall be 20 log (RBW/50) dBm where RBW is the resolution bandwidth in megahertz that is employed. This may be converted to a peak field strength level at 3 meters using E(dBuV/m) = P(dBm EIRP) + 95.2. If RBW is greater than 3 MHz, the application for certification filed with the Commission must contain a detailed description of the test procedure, calibration of the test setup, and the instrumentation employed in the testing. Reply: Compliant. Testing Peak as the requirements for the test procedure, calibration of the test setup, and the instrumentation employed. (h) The highest frequency employed in § 15.33 to determine the frequency range over which radiated measurements are made shall be based on the center frequency, fc, unless a higher frequency is generated within the UWB device. For measuring emission levels, the spectrum shall be investigated from the lowest frequency generated in the UWB transmitter, without going below 9 kHz, up to the frequency range shown in § 15.33(a) or up to fc+ 3/(pulse width in seconds), whichever is higher. There is no requirement to measure emissions beyond 40 GHz provided fc is less than 10 GHz; beyond 100 GHz if fc is at or above 10 GHz and below 30 GHz; or beyond 200 GHz if fc is at or above 30 GHz. Reply: Compliant. Testing range compliant to this requirement for this product. And all radiation spurious emissions are compliant to UWB limits for FCC 15.517. (i)The prohibition in § 2.201(f) and 15.5(d) of this chapter against Class B (damped wave) emissions does not apply to UWB devices operating under this subpart. Reply: This product will not produce Class B emissions (damped wave) (j) Responsible parties are reminded of the other standards and requirements cross referenced in § 15.505, such as a limit on emissions conducted onto the AC power lines. Reply: Compliant. This product only powered by DC 5V from USB port Sincerely Yours, Signature: Printed name: Christian Walter Title: CTO and shareholder

Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-EXP Page 1 of 3 EXHIBIT B - EUT EXTERNAL PHOTOGRAPHS Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-EXP Page 2 of 3 Bay Area Compliance Laboratories Corp. (Shenzhen) Report No.: 2501X13479E-RF-EXP Page 3 of 3

Lewitt GmbH Address: Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria Tel: +43 06642486048 Email: [email protected] FCC Confidential Authorization Date: 2026-07-27 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Confidentiality Request regarding application for certification of FCC ID: 2BS3M-LWTX In accordance with Sections 0.457 and 0.459 of the Commission’s Rules, Lewitt GmbH hereby requests long-term confidential treatment of information accompanying this application as outlined below: • Block Diagram • Schematics • Operation Description The above materials contain proprietary and confidential information not customarily released to the public. The public disclosure of these materials provides unjustified benefits to its competitors in the market. Sincerely Yours, Signature Printed name:Christian Walter Title: CTO and shareholder

QA-FR-170-B 7/29/2014 Lewitt GmbH Address: Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria Tel: +43 06642486048 Email: [email protected] Date: 2026-07-27 FCC Authorization FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Subject: Agent Authorization To whom it may concern: We Lewitt GmbH, the undersigned, hereby authorizes Bay Area Compliance Laboratories Corp. (Shenzhen) to act on its behalf in all matters relating to application for Equipment authorization, including the signing of all documents relating to these matters. All acts carried out by Bay Area Compliance Laboratories Corp. (Shenzhen) on our behalf shall have the same effect as our own action. We, the undersigned, hereby certify that we are not subject to a denial of federal benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 862. This authorization is valid until further written notice from the applicant. Sincerely Yours, Signature: Printed name: Christian Walter Title: CTO and shareholder

U.S. AGENT LETTER OF ATTESTATION Date: 2026-07-27 FEDERAL COMMUNICATIONS COMMISSION Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(7) Filing FCC ID: 2BS3M-LWTX Lewitt GmbH certifies that, as of the date of the filing of the application, Lewitt Inc is our designated U.S. agent for service of process for the above referenced FCC ID. Lewitt GmbH 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. Lewitt Inc accepts, as of the date of the filing of the application, the obligation of the designated U.S. agent for service of process for the above referenced FCC ID. Designated U.S. Agent Information: Name: Lewitt Inc Address: 850 New Burton Road Suite 201 Dover, DE 19904 United States FRN: 0038706768 Tel.: +1 (860) 428-0978 Email: [email protected] Signed by (printed name): Mr Dan Pilver Signature: Applicant: Lewitt GmbH Address: Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria FRN: 0037636891 Tel: +43 06642486048 Email: [email protected] Signed by (printed name):Christian Walter Signature:

Lewitt GmbH Address: Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria Tel: +43 06642486048 Email: [email protected] CFR 47 §2.911 (d)(5)(ii) Attestation Letter Attestation Letter Date: 2026-07-27 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(ii) Filing FCC ID: 2BS3M-LWTX Lewitt GmbH 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. We also certify that, as of the date of the filing of the application, the equipment does not utilize cyber-security or anti-virus software from Kaspersky Lab, Inc, or any of its successors and assignees, which is also on the “covered list”. Sincerely, Printed name:Christian Walter Title: CTO and shareholder

Lewitt GmbH Address: Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria Tel: +43 06642486048 Email: [email protected] CFR 47 §2.911(d)(5)(i) Attestation Letter Attestation Letter Date: 2026-07-27 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Ref: Attestation Statements CFR 47 §2.911(d)(5)(i) Filing FCC ID: 2BS3M-LWTX Lewitt GmbH 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, Signature Printed name:Christian Walter Title: CTO and shareholder

Lewitt GmbH Address: Schanzstrasse 14 Top 1.1, Vienna, 1150 Austria Tel: +43 06642486048 Email: [email protected] Attestation Letter Date:2026-07-27 FEDERAL COMMUNICATIONS COMMISSIONS Authorization and Evaluation Division 7435 Oakland Mills Road Columbia, MD 21046 Dear Sir or Madam: We, Lewitt GmbH, hereby declare that our product Transmitter for LW headphones, Model: LW TX (FCC ID: 2BS3M-LWTX). For the purpose of marketing, this product only supports UWB (7635.5MHz, 8426.5MHz), other functions, bands were disabled to use by manufacturer in the software, the end user has no capability to activate it. Sincerely, Signature, Printed name: Christian Walter Title: CTO and shareholder