Sennheiser's Momentum range continues to redefine the standard for sophisticated listening through superior sound. The new Momentum 4 Wireless raises the bar higher, with Sennheiser's signature sound, advanced adaptive noise cancellation and exceptional comfort. With smart, intuitive features that enhance every interaction and up to 60-hours of battery life, there is nothing between you and an incredible listening experience. Why settle for less? Sennheiser Signature Sound - Powered by Sennheiser's audiophile-inspired 42mm transducer system for exceptional high-fidelity sound. Top-Tier Battery Life - Outstanding battery life with up to 60-hours play back time with fast charging. Adaptive Noise Cancellation and Transparency Mode - Advanced noise cancellation automatically adapts your sound to your surroundings. Transparency Mode lets you hear external sounds without removing your headphones. Premium Comfort - Lightweight design features a padded headband and deep cushioned earpads to ensure exceptional and long-lasting wearing comfort. Customisable Sound - Listen your way with built-in EQ, presets, sound modes, and Sound Personalization feature, which tailors the audio to your individual hearing - all accessible via the Sennheiser Smart Control App. Crystal-clear Calls - Four digital beamforming microphones ensure high quality voice pick-up and automatic wind noise suppression for optimized calls and easier voice assistant access (Siri and Google Assistant). Bluetooth enabled for a wireless connection to your devices Connects to devices via Bluetooth 5.0, 3.5mm jack 42mm driver, Touch on side controls, Featuring gesture control Adjustable headband, Active noise cancellation, Bass control Compatible with universal smartphones, Batteries required 1 x Li-Ion battery (included) Rechargeable battery, 60 hour battery life, 120 minute charging time Fast charge to boost battery life In the box: headphone, carry case, USB-C charging cable, audio cable 3.5mm & 2.5mm jacks airplane adapter