Sennheiser Signature Sound: Powered by Sennheiser’s audiophile-inspired 42mm transducer system for exceptional high-fidelity sound. Customizable 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. 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. Top-Tier Battery Life: Enjoy an outstanding 60 hours play back time with fast charging. 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).