Active Noise Cancelling (ANC) blocks external noise. Beats Pure ANC adapts to external noise and fit while preserving audio quality. Transparency mode helps you stay aware of your surroundings while listening. Advanced acoustic system delivers powerful sound with balanced tonality. Up to 22 hours of listening time (up to 40 hours with ANC and Transparency mode turned off). Fast Fuel provides 3 hours of playback from a 10-minute charge when battery is low. Auto On/Off when you unfold and fold your headphones. Ergonomically designed for optimal comfort and extended wear. Seamlessly integrated on-ear controls for music, phone calls and voice capability. “Hey Siri” hands-free voice3 and improved connection speed4 via the Apple H1 headphone chip. Enhanced phone call performance and call handling. Class 1 Bluetooth for extended range and fewer dropouts, Wirelessly share audio such as songs, podcasts or films with Solo Pro and another set of Beats headphones or AirPods with Audio Sharing.