Sennheiser Momentum Wireless Noise Cancelling Headphones (M3AEBTXL)


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  • The NEW PXC 550-II Wireless. Unrivalled sound quality now travels even further
    Created for the frequent traveller, the PXC 550-II Wireless from Sennheiser upgrades every journey with unrivalled sound quality and wireless freedom. Travel the world on a single charge with 30 hours of battery life: Listen to music, take calls, interact with AI assistants, or simply journey in tranquillity without distractions.

    Leave background noise behind
    Adaptive Noise Cancellation automatically adjusts to your surroundings to suppress unwanted background noise, for your ever-changing environments.

    Your personal travel assistant
    Take control via convenient, one touch access with the Voice Assistant Button that connects to virtual assistants such as Google Assistant, Alexa and Siri. With the triple microphone array offering unrivalled speech clarity when giving voice commands.

    Long lasting comfort, one charge travel
    Whatever your destination, the exceptional 30-hour battery life of the next generation PXC 550–II Wireless is powerful enough to last your entire journey without the need to recharge. And with the advanced ergonomic design and rotating earcups, the PXC 550-II is effortlessly portable with a perfect fit for your ear.

    Smart pause autopilot
    The Smart Pause feature reacts to your movement with seamless and practical automatic switch-off. The headset automatically turns on and connects via Bluetooth as it’s unfolded so you can listen exactly where you left off.

    The sound of smart travel
    The Sennheiser Smart Control App, with selectable sound modes, allows you to tailor the sound experience to your travel playlist whether that be music, news, podcasts, or film.

    First class call quality
    A bespoke triple microphone array makes it easy to stay connected while on the move. ANC detects and removes background noise providing unrivalled speech clarity, so your calls and voice commands are never lost.

    Smart Control App
    Listen to your music the way you want. This free dedicated app for iOS and Android provides an effortless way to control, personalize, update and configure your Sennheiser headphone, headset or soundbar.

  • • Sheepskin headband
    • Sheepskin ear pads
    • Active noise cancellation (ANC) switch
    • On/off, Transparent Hearing mode
    • NFC antenna
    • Volume + button (volume up)
    • Multi-function button for music and call functions
    • Voice assistant button - pressing for 5 seconds activates the Bluetooth pairing mode
    • Input for USB-C for charging and music playback/data connection)
    • Input for analog audio cable - when a cable is connected, flight mode is activated/Bluetooth is deactivated
    • Ear cups (steplessly adjustable) with internal microphones for active noise cancellation ANC
  • Speaker type

    Dynamic, 32 mm

    Frequency range

    Speaker: 17 – 23,000 Hz (-10db)

    Ear coupling

    Around-ear headphone


    Active: 490 ohm / Passive: 46 ohm


    110 dbSPL (passive : 1 kHz/1V RMS)

    THD + N, total harmonic distortion and noise

    <0,5% @ 100 dBSPL / 1kHz



    Frequency response (Microphone)

    50 – 10,000 Hz

    Microphone sensitivity

    -34 dBV/Pa

    Pick-up pattern

    3 mic beamforming


    Bluetooth 5.0 compliant

    Transmission frequency

    2400 MHz – 2483.5 MHz / GFSK, Pi/4DQPSK, 8DQPSK

    Supported operating systems



    SBC, aptX™, aptX™ Low Latency, AAC

    USB Standard micro-USB
    Power supply 5.0 V DC, 330 mA
    Battery Specification Built-in Lithium rechargeable battery
    Charging time 3 hrs
    Battery time 20 hrs (ANC + A2DP) 30 hrs (ANC + wired)
    App support Sennheiser Smart Control APP for iOS™ and Android™
    Operating temperature 0°C – 55°C temp. / 10% - 80% humidity, non condensing
    Dimensions Unfolded: 63 x 136 x 174 mm (L x W x H)


    227 g