HD Stereo Sound: Engineered precision with 5-band EQ and customizable sound modes for noise cancelling over ear headphones wireless, delivering an immersive personalized audio experience All-Day Listening: Enjoy up to 50 hours of battery life with fast charging, great for long workdays, travel, phone calls, or extended music sessions using Sennheiser wireless headphones over ear Hybrid ANC & Transparency Mode: Minimize distractions with active noise cancellation on these noise cancelling headphones wireless or stay aware of your surroundings when needed Crystal-Clear Calls: These over ear noise cancelling headphones feature dual-microphone beamforming technology for crisp, high-quality voice transmission during calls or with voice assistants Comfortable, Stylish Design: Lightweight, ergonomic over ear active noise cancelling headphones with wireless connectivity and a soft-touch silicon-lined headband provide a secure fit, immersive sound, and all-day comfort