Sennheiser Accentum On-Ear Headphones, Bluetooth, Black Unparalleled Playtime with 50 Hours of Battery Life Keep your music flowing for days on a single charge with ACCENTUM's unrivaled 50-hour battery life. Sennheiser Sound – Your Audio Journey Indulge in a world of immersive sound, thanks to Sennheiser's powerful 37mm driver. Hybrid Noise Cancelling Say goodbye to distractions and lose yourself in your music with our hybrid active noise cancellation. All-day comfort, every day Designed for long marathon listening sessions, with a lightweight and ergonomic design for maximum comfort. Your sound, your way Personalize your audio adventure with our Smart Control app. Craving deep bass? Activate Bass Boost mode. Smart Control App For a truly personalized experience, download the Sennheiser Smart Control app to easily customize your sound using the built-in 5-band EQ, sound modes and Sound Zones.