Sennheiser tuned sound: Tuned by acoustic experts for a superior open sound, they deliver rich, detailed sound thats finely tuned for clarity and depth. Enjoy premium audio experience that feels alive and blends naturally with the world around you. Stay aware, stay engaged with open design: Calls, kids, or lifeyoure always in the loop while your music keeps you moving. Connected, available, and present, all day long thanks to the natural awareness of open design. All-day playtime: Up to 28 hours of total playtime with the pocket-sized charging case, keeping your music going from morning to night. Breathable fit: A lightweight, open design with an ergonomic stem that ensures comfort without the pressure, fatigue, or isolation of traditional in-ear. Effortless use, no manual needed: Switch between devices effortlessly with multipoint connectivitycalls, music, no fuss. Enjoy smart pause, intuitive touch controls, and pairing with up to 8 devices no manuals, no apps, just press play."