OSDMMX230DLLDongle

Safety | Compliance | Warranty MMX 230 WIRELESS WIRELESS ANC GAMING HEADSET PLROHUSKCS JAKO beyerdynamic GmbH & Co. KG Theresienstraße 8 74072 Heilbronn Germany www.beyerdynamic.com 3 MMX 230 wireless EN SAFETY INSTRUCTIONS � Please read these safety instructions carefully and completely before using the MMX 230 wireless. � Please observe all instructions given, especially those concerning the safe use of the MMX 230 wireless. � Please also observe the detailed operating instructions for the MMX 230 wireless. You can download the instructions from the beyerdynamic website at www.beyerdynamic.com/p/mmx-230- wireless � Do not use the MMX 230 wireless if it is defective. Intended use � Only use the MMX 230 wireless as described in this product manual. The company beyerdynamic GmbH & Co. KG accepts no liability for damage to the MMX 230 wireless or injury to persons caused by careless, improper or incorrect use of the MMX 230 wireless, or by use for purposes not specified by the manufacturer. � beyerdynamic is not liable for damage to USB devices that do not comply with the USB specifications. � beyerdynamic is not liable for damage resulting from connection interruptions due to batteries being empty or too old, or due to exceeding the Bluetooth® transmission range. � Please also observe the relevant country- specific regulations before using the MMX 230 wireless. Adjusting the volume High volumes and long listening can permanently damage your hearing. � Before putting on the MMX 230 wireless, set the volume to minimum. Only increase the volume afterwards. � When listening and speaking normally with the MMX 230 wireless, your voice should still be perceptible. � In case of tinnitus, decrease the volume. If necessary, consult a doctor. � Excessively high volumes and long listening times may cause hearing damage. � As a rule of thumb, the higher the volume, the shorter the listening time. Damage from liquids Liquid penetration can damage the MMX 230 wireless. � Make sure that no liquids penetrate the MMX 230 wireless (e.g. when cleaning). � Do not use solvent-based or aggressive cleaning agents. Risk of swallowing � Keep small parts, such as packaging and accessories, away from children and pets. They constitute a choking hazard if swallowed! Using the batteries Danger from heat, water and mechanical stress Excessive heat, water and mechanical stress may cause explosion, heat, fire, smoke or fumes. Injuries and irreversible damage to the battery may result. � Do not expose the battery to excessive heat, fire or extremely low air pressure. There is a risk of explosion, fire, smoke or gas. � Do not subject the battery to mechanical stress (e.g. crushing). � Do not open the housing or remove the battery. � Only use a USB 2.0/3.0 standard-compliant 5 V power supply to charge the battery via the integrated USB Type-C port. Storing the battery � If the battery is not going to be used for an extended period, set the charge level to approximately 50 % of the maximum capacity and store it at temperatures up to max. 30 °C. Charging � Disconnect the USB connecting cable from the charging unit once the device is fully charged. Environmental conditions � Do not expose the product to rain, snow, liquids or moisture. 4 MMX 230 wireless DISPOSAL This symbol on the product, in the operating instructions or on the packaging means that electrical and electronic devices must be disposed of separately from household waste at the end of their life cycle. � Always dispose of used equipment in accordance with applicable regulations. For sale within the EU only: � For the return of old equipment, batteries and rechargeable batteries, there are free collection points or a free return to beyerdynamic, as well as other acceptance points for reuse. The addresses are available at the local city or municipal administration. � Dealers for electronic equipment are generally obliged to take back waste electrical/electronic equipment free of charge. Disposal of batteries � Dispose of batteries separately after use from the product in accordance with applicable regulations. They must not be disposed of in household waste. The return is free of charge for consumers/end users. � Before disposal, discharge the battery. CAUTION: For this product a non-destructive removal of the battery by the end user is not possible. Please contact beyerdynamic or consult independent professional staff. The properly removed battery must be disposed of in a container intended for this purpose with tape put on the terminals; do not dispose of it with household waste or municipal waste. � You will find instructions for changing the battery at the end of this compliance booklet. CONFORMITY AND GUARANTEE EU Declaration of conformity beyerdynamic hereby declares that this radio transmission device complies with the EU Directive 2014/53/EU and the EU Directive 2011/65/EU. � The full text of the EU declaration of conformity can be found on the Internet at: www.beyerdynamic.com/cod Warranty conditions beyerdynamic provides a limited guarantee for the original beyerdynamic product you have purchased. � You can find detailed information about beyerdynamic’s warranty conditions on the Internet at www.beyerdynamic.com/service/warranty PRODUCT REGISTRATION You can register your MMX 230 wireless online at www.beyerdynamic.com/p/mmx-230- wireless by entering the serial number. TECHNICAL SPECIFICATIONS MMX 230 wireless Headset Bluetooth® frequency range 2,402 – 2,480 MHz Transmitting power≤ 11 dBm Operating temperature range -10 to +50 °C Charging temperature range 0 to +45 °C Battery type: lithium- ion battery 3.7 Vdc, 650 mAh Battery weight12 g MMX 230 wireless Low Latency Dongle Bluetooth® frequency range 2,402 – 2,480 MHz Transmitting power≤ 11 dBm Operating temperature range -10 to +50 °C You can find more detailed information about the technical specifications online at: www.beyerdynamic.com/p/mmx-230-wireless 5 MMX 230 wireless Information on the battery use…

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MMX 230 WIRELESS WIRELESS ANC GAMING HEADSET INCLUDING LOW LATENCY DONGLE Quick Start Guide | Kurzanleitung 使用说明精简版 | Instrucciones breves Skrócona instrukcja obsługi | 요약 설명서 KO PL ES MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 1MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 104.11.2025 15:59:0604.11.2025 15:59:06 MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 2MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 204.11.2025 15:59:0604.11.2025 15:59:06 3 CONTENTS | INHALT | 目录 | CONTENIDO |SPIS TREŚCI | 목차 BOX CONTENTS | LIEFERUMFANG | 随机清单 4 CONTENIDO DE LA CAJA | ZAKRES DOSTAWY | 제공 범위 5 APP | APP | 应用 6 APP | APLIKACJA | 앱 7 CONTROLS | BEDIENELEMENTE | 操作元件 8 ELEMENTOS DE MANDO | ELEMENTY OBSŁUGI | 리모컨 구성 9 ON/OFF | EIN/AUS | 开/关 10 ENCENDIDO/APAGADO | WŁĄCZANIE/WYŁĄCZANIE | 켜기/끄기 11 PAIRING | KOPPELN | 配对 12 ACOPLAMIENTO | PAROWANIE | 페어링 13 ANC MODE | ANC-MODUS | ANC 模式 14 MODO ANC | TRYB ANC | ANC 모드 15 SIDETONE | SIDETONE | 侧音 16 SONIDO LOCAL | FUNKCJA SIDETONE | 사이드톤 17 ASSISTANT | ASSISTENT | 助手 18 ASISTENTE | ASYSTENT | 개인 비서 19 MUSIC CONTROL | MUSIKSTEUERUNG | 音乐控制 20 CONTROL DE LA MÚSICA | ODTWARZANIE MUZYKI | 음악 제어 21 TELEPHONE | TELEFONIEREN | 通话 22 LLAMAR POR TELÉFONO | TELEFONOWANIE | 통화 23 VOLUME | LAUTSTÄRKE | 音量 24 CONTROL DE VOLUMEN | GŁOŚNOŚĆ | 볼륨 25 MICROPHONE ON/OFF | MIKROFON EIN/AUS | 麦克风开/关 26 ACTIVAR/DESACTIVAR EL MICRÓFONO | WŁĄCZANIE/WYŁĄCZANIE MIKROFONU | 마이크 켜기/끄기 27 CHARGING | LADEN | 充电 28 CARGA | ŁADOWANIE | 충전 29 HELP/REGISTRATION | HILFE/REGISTRIERUNG | 帮助/注册 30 AYUDA/REGISTRO | POMOC/REJESTRACJA | 도움말/등록 31 MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 3MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 304.11.2025 15:59:0604.11.2025 15:59:06 4 BOX CONTENTS | LIEFERUMFANG | 随机清单 � MMX 230 wireless headset � USB-C charging cable � Audio cable (mini jack to USB-C) � Dongle � Adapter USB-C to USB-A � Soft bag � This quick start guide � Compliance booklet � Headset MMX 230 wireless � Ladekabel USB-C � Audiokabel (3,5 mm Klinke auf USB-C) � Dongle � Adapter USB-C auf USB-A � Kordelzugbeutel � Diese Kurzanleitung � Compliance Booklet � 头戴式耳机 MMX 230 wireless � USB-C 充电线 � 音频线（3.5 毫米插头至 USB-C） � 适配器 � USB-A 至 USB-C 适配器 � 抽绳包 � 本简短使用指导 � 合规手册 MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 4MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 404.11.2025 15:59:0604.11.2025 15:59:06 5 CONTENIDO DE LA CAJA | ZAKRES DOSTAWY | 제공 범위 � Auriculares MMX 230 wireless � Cable de carga USB-C � Cable de audio (conector jack de 3,5 mm a USB-C) � Dongle � Adaptador de USB-C a USB-A � Funda con cordón � Manual de Instrucciones rápido � Folleto de conformidad � Zestaw słuchawkowy MMX 230 wireless � Kabel ładujący USB-C � Kabel audio (wtyczka jack 3,5 mm na USB-C) � Klucz sprzętowy � Adapter USB-C na USB-A � Woreczek ze sznurkiem � Skrócona instrukcja obsługi � Broszura zgodności � MMX 230 wireless 헤드셋 � USB C 충전 케이블 � 오디오 케이블 (3.5mm 잭에서 USB-C) � 동글 � USB-C to USB-A 어댑터 � 파우치 � 요약 설명서 � 소책자 MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 5MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 504.11.2025 15:59:0604.11.2025 15:59:06 6 APP | APP | 应用 The beyerdynamic App gives you customised control of your MMX 230 wireless � Download the beyerdynamic App from the App Store (for iOS devices) or Google Play (for Android devices) With the beyerdynamic App you can carry out customi- sed operation settings and software updates These settings are saved to your MMX 230 wire- less, so you can enjoy with any playback device connected to your MMX 230 wireless Die beyerdynamic App ermöglicht Ihnen eine individuelle Steuerung Ihres MMX 230 wireless � Laden Sie die beyerdynamic App aus dem App Store (für iOS-Geräte) oder von Google Play (für Android-Geräte) herunter Mit der beyerdynamic App können Sie benutzer- definierte Betriebseinstellungen und Software- Updates vornehmen Diese Einstellungen werden auf Ihrem MMX 230 wireless gespeichert, so dass Sie sie mit jedem Abspielgerät, das mit Ihrem MMX 230 wireless verbunden ist, genießen können 拜雅应用程序支持您对 MMX 230 wireless 进行更具个 性化的操作。 � 从应用商店（针对 iOS 设备）或 Google Play （针对 Android 设备）下载拜雅应用程序。使用拜雅 应用程序，您可自定义操作设置和软件更新。这些设置 将保存在您的 MMX 230 wireless 中，因此您可在与 您的 MMX 230 wireless 连接的任何播放设备上畅享 所设定的功能。 beyerdynamic beyerdynamic MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 6MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 604.11.2025 15:59:0604.11.2025 15:59:06 7 APP | APP | 应用APP | APLIKACJA | 앱 La aplicación de beyerdynamic le permite controlar su MMX 230 wireless de forma más individual � Descargue la aplicación de beyerdynamic desde la App Store (para dispositivos iOS) o desde Google Play (para dispositivos Android) Con la aplicación de beyerdynamic puede realizar ajustes de funcionamiento persona- lizados y actualizaciones de software Estos ajustes se guardan en su MMX 230 wireless para que pueda disfrutar de ellos con cualquier dispositivo de reproducción conectado a su MMX 230 wireless Aplikacja beyerdynamic umożliwia indywidualne sterowanie zestawem słuchawkowym MMX 230 wireless � Pobierz aplikację beyerdynamic z App Store (dla urządzeń z systemem iOS) lub z Google Play (dla urządzeń z systemem Android) Za pomocą aplikacji beyerdynamic można dokonywać niestandardowych ustawień obsługi i aktu- alizacji oprogramowania Te ustawienia są zapisywane w MMX 230 wireless, dzięki czemu można ich używać z dowolnym urządzeniem odtwarzającym, podłączonym do zestawu słuchawkowego MMX 230 wireless beyerdynamic 앱을 사용하면 MMX 230 wireless를 개별 적으로 제어할 수 있습니다. � App Store(iOS 기기) 또는 Google Play(안드로이드 기기)에서 beyerdynamic 앱을 다운로드하십시오. beyerdynamic 앱을 사용하여 맞춤형 작동 설정 및 소프트웨어 업데이트를 수행할 수 있습니다. 이러한 설정은 MMX 230 wireless에 저장되므로 MMX 230 wireless에 연결된 모든 재생 장치에서 해당 설정이 유지됩니다. beyerdynamic beyerdynamic MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 7MAN_MMX230wireless-QSG_EN-DE-ZH-ES-PL-KO_A2.indd 704.11.2025 15:59:0704.11.2025 15:59:07 8 CONTROLS | BEDIENELEMENTE | 操作元件 Headset 1 Microphone (fixed) 2 On/off button 3 ANC button 4 Status LED 5 Charging LED 6 USB-C connection…

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承 認 書 SPECIFICATION FOR APPROVAL 客戶名稱 CUSTOMER ： 客戶料號 CUSTOMER’S P/N ： 料號 PART NUMBER ： WAN3216F245C04 規格 DESCRIPTION ： Chip Antenna 3216 L Ant 2.45G Type 04 版本 VERSION ： V1.3 日期 ISSUE DATE ： 2020/03/13 客 戶 承 認 CUSTOMER APPROVED 工 程 部 R&D CENTER 承 認 APPROVAL 確 認 CHECKED 製 作 DRAWN Ray Tennyson Snow 萬誠科技股份有限公司 OneWave Electronic Co., Ltd. 11261台北市北投區立功街151號1樓 1F, No. 151, Li Gong Street, Beitou District, Taipei City 11261, Taiwan 電話: (02) 2898-2220 TEL: +886 2 2898-2220 傳真: (02) 2898-5055 FAX: +886 2 2898-5055 2/11 ONEWAVE TECHNOLOGY CO., LTD. 3216 Chip antenna For Bluetooth / WLAN Applications Dimension (mm) L 3.23 ± 0.20 W 1.66 ± 0.20 T 0.45 ± 0.20 P/N: WAN3216F245C04 3/11 ONEWAVE TECHNOLOGY CO., LTD. Part Number Information WAN 3216 F 245 C 04 A B C D E F A Product Series Antenna B Dimension L x W 3.2 x 1.6mm (±0.2mm) C Material High K material D Working Frequency 2.4 ~ 2.5GHz E Feeding mode PIFA & Single Feeding F Antenna type Type = 04 1. Electrical Specification Remark : Bandwidth & Peak Gain was measured under evaluation board of next page Specification Part Number WAN3216F245C04 Central Frequency 2450 MHz Bandwidth 120 (Min.) MHz Return Loss -6.5 (Max) dB Peak Gain 1.75 dBi Impedance 50 Ohm Operating Temperature -40～+110 °C Maximum Power 4 W Resistance to Soldering Heats 10 ( @ 260°C) sec. Polarization Linear Azimuth Beamwidth Omni-directional Termination Ni / Au (Leadless) 4/11 ONEWAVE TECHNOLOGY CO., LTD. 2. Recommended PCB Pattern Evaluation Board Dimension 2 nd Evaluation Board Dimension Suggested Matching Circuit 重要資訊 : 匹配元件建議使用精準度高的電感±0.1~0.3nH、電容±0.1pF 5/11 ONEWAVE TECHNOLOGY CO., LTD. Layout Dimensions in Clearance area( Size=5.9*5.0mm) FootPrint (Unit : mm) ◆ 2 nd Layout Dimensions in Clearance area( Size=8.0*3.0mm) Matching Circuit 50 ohm transmission Line 6/11 ONEWAVE TECHNOLOGY CO., LTD. 3. Measurement Results Return Loss 7/11 ONEWAVE TECHNOLOGY CO., LTD. Radiation Pattern Efficiency Peak Gain Directivity 2400MHz 82.36% 1.69 dBi 2.53 dBi 2450MHz 85.65% 1.75 dBi 2.42 dBi 2500MHz 83.88% 1.71 dBi 2.47 dBi Chamber Coordinate System X Y Z 8/11 ONEWAVE TECHNOLOGY CO., LTD. 4.Reliability and Test Condictions ITEM REQUIREMENTS TEST CONDITION Solderability 1. Wetting shall exceed 90% coverage 2. No visible mechanical damage Pre-heating temperature:150°C/60sec. Solder temperature:230±5°C Duration:4±1sec. Solder:Sn-Ag3.0-Cu0.5 Flux for lead free: rosin Solder heat Resistance 1. No visible mechanical damage 2. Central Freq. change :within ± 6% 10 ± 0.5 sec. 60 sec . . T E M P ( °C ) 150 °C 2 6 0 °C Pre-heating temperature:150°C/60sec. Solder temperature:260±5°C Duration:10±0.5sec. Solder:Sn-Ag3.0-Cu0.5 Flux for lead free: rosin Component Adhesion (Push test) 1. No visible mechanical damage The device should be reflow soldered(230±5°C for 10sec.) to a tinned copper substrate A dynometer force gauge should be applied the side of the component. The device must with-ST-F 0.5 Kg without failure of the termination attached to component. Component Adhesion (Pull test) 1. No visible mechanical damage Insert 10cm wire into the remaining open eye bend ,the ends of even wire lengths upward and wind together. Terminal shall not be remarkably damaged. Thermal shock 1. No visible mechanical damage 2. Central Freq. change :within ±6% Phase Temperature(°C) Time(min) 1 +110±5°C 30±3 2 Room Temperature Within 3sec 3 -40±2°C 30±3 4 Room Temperature Within 3sec +110°C=>30±3min -40°C=>30±3min Test cycle:10 cycles The chip shall be stabilized at normal condition for 2~3 hours before measuring. Resistance to High Temperature 1. No visible mechanical damage 2. Central Freq. change :within ±6% 3. No disconnection or short circuit. Temperature: +110±5°C Duration: 1000±12hrs The chip shall be stabilized at normal condition for 2~3 hours before measuring. Resistance to Low Temperature 1. No visible mechanical damage 2. Central Freq. change :within ±6% 3. No disconnection or short circuit. Temperature:-40±5°C Duration: 1000±12hrs The chip shall be stabilized at normal condition for 2~3 hours before measuring. Humidity 1. No visible mechanical damage 2. Central Freq. change :within ±6% 3. No disconnection or short circuit. Temperature: 40±2°C Humidity: 90% to 95% RH Duration: 1000±12hrs The chip shall be stabilized at normal condition for 2~3 hours before measuring. 4±1 sec. 60sec TEMP (°C) 150°C 230°C 9/11 ONEWAVE TECHNOLOGY CO., LTD. 5.Soldering and Mounting Mildly activated rosin fluxes are preferred. The minimum amount of solder can lead to damage from the stresses caused by the difference in coefficients of expansion between solder, chip and substrate. The terminations are suitable for all wave and re-flow soldering systems. If hand soldering cannot be avoided, the preferred technique is the utilization of hot air soldering tools. Recommended temperature profiles for re-flow soldering in Figure 1. Products attachment with a soldering iron is discouraged due to the inherent process control limitations. In the event that a soldering iron must be employed the following precautions are recommended. ‧Preheat circuit and products to 150°C ‧Never contact the ceramic with the iron tip ‧Use a 20 watt soldering iron with tip diameter of 1.0mm ‧280°C tip temperature (max) ‧1.0mm tip diameter (max) ‧Limit soldering time to 3 sec. SOLDERING COOLING NATURAL PRE-HEATING TEMPERATURE(°C) 60~120 s 10s max. 30~60s 250~260 230 180 150 TIME(sec.) Reflow Soldering SOLDERING COOLING NATURAL PRE-HEATING TEMPERATURE(°C) within 3s Gradual cooling 150 TIME(sec.) Iron Soldering Over 60s 350 300 10/11 ONEWAVE TECHNOLOGY CO., LTD. 6.Packaging Information Tape Specification: Reel Specification: (7’’, Φ180 mm) Tape Width(mm) A(mm) B(mm) C(mm) D(mm) Chip/Reel(pcs) 8 9.0±0.5 60±2 13.5±0.5 178±2 3000 11/11 ONEWAVE TECHNOLOGY CO., LTD. 7.Storage and Transportation Information Storage Conditions To maintain the solderability of terminal electrodes: 1. Temperature and humidity conditions: -10~ 40°C and 30~70% RH. 2. Recommended products should…

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SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A02 Rev. A/1 Aug 16,2024 Report No.: SZCR250900404406 Page: 1 of 6 Appendix D Photographs 1. SAR measurement System 2. Photographs of Tissue Simulate Liquid 3. Photographs of EUT test position 4. EUT Antenna Locations 5. EUT Constructional Details SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A02 Rev. A/1 Aug 16,2024 Report No.: SZCR250900404406 Page: 2 of 6 1. SAR measurement System SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A02 Rev. A/1 Aug 16,2024 Report No.: SZCR250900404406 Page: 3 of 6 2. Photographs of Tissue Simulate Liquid Photo 1: Tissue Simulant Liquid for HBBL600-10000MHz NA NA SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A02 Rev. A/1 Aug 16,2024 Report No.: SZCR250900404406 Page: 4 of 6 3. Photographs of EUT test position Photo 2: Front side 5mm Photo 3: Back side 5mm Photo 4: Left side 5mm Photo 5: Right side 5mm Photo 6: Top side 5mm / / SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A02 Rev. A/1 Aug 16,2024 Report No.: SZCR250900404406 Page: 5 of 6 4. EUT Antenna Locations SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A02 Rev. A/1 Aug 16,2024 Report No.: SZCR250900404406 Page: 6 of 6 5. EUT Constructional Details Details please Refer to Appendix – Photographs for SZCR2509004044AT. - End of the Appendix –

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A04 Rev.A/0 Page: 1 of 3 Appendix Test Setup Photos for SZCR2509004044AT FCC ID: OSDMMX230DLL SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A04 Rev.A/0 Page: 2 of 3 Test Setup Photo Conducted Emissions at AC Power Line (150kHz-30MHz) Radiated Spurious Emissions Below 1GHz SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-A04 Rev.A/0 Page: 3 of 3 Radiated Spurious Emissions Above 1GHz - End of the Appendix -

D ipole D2450V2 SN 733 Head Liquid Date of Measurement Return Loss(dB) Δ % Impedance (Ω) ΔΩ() 2022/11/2 -28.7/ 50.2 / 2024/10/31 -28.12.14% 50.7 0.5Ω - En d of Appendix -

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A01 Rev. A/1 Aug 16,2024 Report No.: SZCR250900404406 Page: 1 of 20 Appendix C Calibration certificate 1. Dipole D2450V2-SN 733 2. DAE DAE4-SN 1663 3. Probe EX3DV4-SN 3789 4. dipole extend

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A04 Rev. A/0 Aug 16,2024 Report No.: SZCR250900404406 Page: 1 of 2 Appendix B Detailed Test Results 1.BLE BLE Date: 2025/10/16 Test Laboratory: SGS-SAR Lab MMX230 Bluetooth BLE 1M 19CH Back side 5mm DUT: MMX230; Type: Dongle; Communication System: UID 0, BLE (0); Frequency: 2440 MHz;Duty Cycle: 1:3.056 Medium: HSL;Medium parameters used: f = 2440 MHz; σ = 1.79 S/m; ε r = 37.97; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY 5 Configuration: Probe: EX3DV4 - SN3789; ConvF(6.98, 6.98, 6.98); Calibrated: 2025/1/15 Sensor-Surface: 1.4mm (Mechanical Surface Detection) Electronics: DAE4 Sn1663; Calibrated: 2025/4/27 Phantom: SAM 3; Type: SAM Twin; Serial: 2031 DASY52 52.10.4(1527); SEMCAD X 14.6.14(7483) Configuration/Body/Area Scan (5x5x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 0.312 W/kg Configuration/Body/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 7.043 V/m; Power Drift = 0.00 dB Peak SAR (extrapolated) = 0.674 W/kg SAR(1 g) = 0.253 W/kg; SAR(10 g) = 0.102 W/kg Smallest distance from peaks to all points 3 dB below = 5.7 mm Ratio of SAR at M2 to SAR at M1 = 37.9%. Maximum value of SAR (measured) = 0.512 W/kg 0 dB = 0.512 W/kg = -2.91 dBW/kg - End of the Appendix -

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZSAR-TRF-01-A03 Rev. A/0 Aug 16,2024 Report No.: SZCR250900404406 Page: 1 of 2 Appendix A Detailed System Check Results 1. System Performance Check System Performance Check 2450 MHz Head Date: 2025/10/16 Test Laboratory: SGS-SAR Lab System Performance Check 2450MHz Head DUT: D2450GHzV2; Type: Dipole; Serial: 733 Communication System: UID 0, CW (0); Frequency: 2450 MHz;Duty Cycle: 1:1 Medium: HSL;Medium parameters used: f = 2450 MHz; σ = 1.803 S/m; ε r = 37.933; ρ = 1000 kg/m 3 Phantom section: Flat Section DASY 5 Configuration: Probe: EX3DV4 - SN3789; ConvF(6.98, 6.98, 6.98); Calibrated: 2025/1/15 Sensor-Surface: 1.4mm (Mechanical Surface Detection) Electronics: DAE4 Sn1663; Calibrated: 2025/4/27 Phantom: SAM 3; Type: SAM Twin; Serial: 2031 DASY52 52.10.4(1527); SEMCAD X 14.6.14(7483) Body/d=10mm, Pin=250mW/Area Scan (7x9x1): Measurement grid: dx=12mm, dy=12mm Maximum value of SAR (measured) = 20.7 W/kg Body/d=10mm, Pin=250mW/Zoom Scan (7x7x7)/Cube 0: Measurement grid: dx=5mm, dy=5mm, dz=5mm Reference Value = 87.96 V/m; Power Drift = 0.14 dB Peak SAR (extrapolated) = 27.6 W/kg SAR(1 g) = 13.1 W/kg; SAR(10 g) = 6.08 W/kg Smallest distance from peaks to all points 3 dB below = 9.3 mm Ratio of SAR at M2 to SAR at M1 = 46.5% Maximum value of SAR (measured) = 21.9 W/kg 0 dB = 21.9 W/kg = 13.40 dBW/kg - End of the Appendix -

SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR250900404405 Page: 1 of 88 Keny Xu EMC Laboratory Manager TEST REPORT Application No.: SZCR2509004044AT Applicant: Beyerdynamic Address of Applicant: 56 Central Avenue, Farmingdale, New York, 11735, United States Manufacturer: beyerdynamic GmbH & Co.KG Address of Manufacturer: Theresienstrasse 8, 74072 Heilbronn, Germany Factory: Honsenn Technology Co., Ltd Address of Factory: No.70, Erheng Road, Wentang Zhuanyao Industrial Zone, Dongcheng District , Dongguan City , Guangdong Province Equipment Under Test (EUT): EUT Name: Wireless ANC Gaming Headset Model No.: MMX 230 wireless Low Latency Dongle Trade Mark: beyerdynamic FCC ID: OSDMMX230DLL Standard(s) : 47 CFR Part 15, Subpart C 15.247 Date of Receipt: 2025-09-12 Date of Test: 2025-09-13 to 2025-09-30 Date of Issue: 2025-10-30 Test Result: Pass* * In the configuration tested, the EUT complied with the standards specified above. SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR250900404405 Page: 2 of 88 Revision Record Version Chapter Date Modifier Remark 01 2025-10-30 Original Authorized for issue by: Bill Chen/Project Engineer Eric Fu/Reviewer SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR250900404405 Page: 3 of 88 2 Test Summary Radio Spectrum Technical Requirement Item Standard Method Requirement Result Antenna Requirement 47 CFR Part 15, Subpart C 15.247 N/A 47 CFR Part 15, Subpart C 15.203 & 15.247(b)(4) Pass Radio Spectrum Matter Part Item Standard Method Requirement Result Conducted Emissions at AC Power Line (150kHz-30MHz) 47 CFR Part 15, Subpart C 15.247 ANSI C63.10 (2020) Section 6.2 47 CFR Part 15, Subpart C 15.207 Pass Radiated Emissions which fall in the restricted bands ANSI C63.10 (2020) Section 6.10.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Below 1GHz ANSI C63.10 (2020) Section 6.4,6.5 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Radiated Spurious Emissions Above 1GHz ANSI C63.10 (2020) Section 6.6 47 CFR Part 15, Subpart C 15.205 & 15.209 Pass Conducted Peak Output Power ANSI C63.10 (2020) Section 11.9.1 47 CFR Part 15, Subpart C 15.247(b)(3) Pass Minimum 6dB Bandwidth ANSI C63.10 (2020) Section 11.8.1 47 CFR Part 15, Subpart C 15.247a(2) Pass Power Spectrum Density ANSI C63.10 (2020) Section 11.10.2 47 CFR Part 15, Subpart C 15.247(e) Pass Conducted Band Edges Measurement ANSI C63.10 (2020) Section 6.10.4 47 CFR Part 15, Subpart C 15.247(d) Pass Conducted Spurious Emissions ANSI C63.10 (2020) Section 11.11 47 CFR Part 15, Subpart C 15.247(d) Pass SGS-CSTC Standards Technical Services Co., Ltd. Shenzhen Branch SZEMC-TRF-01 Rev. A/1 Report No.: SZCR250900404405 Page: 4 of 88 3 Contents Page 1 Cover Page ................................................................................................................................................ 1 2 Test Summary ........................................................................................................................................... 3 3 Contents .................................................................................................................................................... 4 4 General Information .................................................................................................................................. 6 4.1 Details of E.U.T. ................................................................................................................................. 6 4.2 Description of Support Units .............................................................................................................. 6 4.3 Measurement Uncertainty .................................................................................................................. 6 4.4 Test Location ...................................................................................................................................... 7 4.5 Test Facility ........................................................................................................................................ 7 4.6 Deviation from Standards ................................................................................................................... 7 4.7 Abnormalities from Standard Conditions ........................................................................................... 7 5 Equipment List .......................................................................................................................................... 8 6 Radio Spectrum Technical Requirement ............................................................................................. 10 6.1 Antenna Requirement ...................................................................................................................... 10 6.1.1 Test Requirement: ....................................................................................................................... 10 6.1.1 Conclusion ................................................................................................................................... 10 7 Radio Spectrum Matter Test Results .................................................................................................... 11 7.1 Conducted Emissions at AC Power Line (150kHz-30MHz) ............................................................. 11 7.1.1 E.U.T. Operation .......................................................................................................................... 11 7.1.2 Test Mode Description ................................................................................................................. 11 7.1.3 Test Setup Diagram ..................................................................................................................... 12 7.1.4 Measurement Procedure and …

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UNITED STATES DESIGNATED AGENT LETTER Date: 2025-09-30 TO: Federal Communication Commission Equipment Authorization Branch 7435 Oakland Mills Road Columbia, MID 21046 Applicant U.S. designated agent Company Name: Beyerdynamic Inc. Company Name: Beyerdynamic Inc. FRN: 0006993679 FRN: 0006993679 Grantee Code: OSD Contact Name: Ulrich Roth Contact Name Ulrich Roth Address: 56 Central Avenue Farmingdale New York 11735 United States Address: 56 Central Avenue Farmingdale New York 11735 United States City/Province/Zip: City/Province/Zip: Telephone: 631-293-3200 Telephone: 631-293-3200 Fax: 631-293-3288 Fax: 631-293-3288 Email: [email protected] Email: [email protected] Applicable Equipment: FCC ID: OSDMMX230DLL ATTN: Director of Certification: We, Beyerdynamic understand and acknowledge the app…

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