Maximum audio resolution with Sennheiser Signature Sound Enjoy premium music quality all-day long thanks to the headphone's audiophile-inspired 42mm transducer system and aptX Adaptive. Note Recommendation is that the user downloads the Sennheiser Smart Control app, this ensures that the product is up to date with updates Personalized sound via the Sennheiser Smart Control App Adjust the sound to your individual listening preferences via the integrated equalizer, presets and sound modes - for a unique sound experience Stay immersed in your music Thanks to the headphone's Adaptive Noise Cancellation, you stay distraction-free - and with the Adjustable Transparency Mode you stay in touch with the world around you Exceptional comfort and long battery life Lightweight, foldable design with padded headband and deeply cushioned ear pads for long-lasting comfort - up to 60 hours of playback time with fast charging; Crystal-clear calls The four digital beamforming microphones ensure high-quality voice pick-up and automatically suppress wind noise for optimized calls and easier access to the voice assistant Control Type: Voice Control; Model: 700382