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. Specific uses for product: Music. 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. Included components: Headphones, carry case, USB-C charging cable, audio cable with 3.5mm and 2.5mm jacks, airplane adapter. Top-Tier Battery Life.