Pure Active Noise Cancelling (Pure ANC) actively blocks external noise Real-time audio calibration preserves a premium listening experience Up to 22 hours of battery life enables fully featured all-day wireless playback Apple W1 chip for Class 1 Wireless Bluetooth connectivity and battery efficiency With Fast Fuel, a 10-minute charge gives 3 hours of play when battery is low Pure ANC-off for low-power mode provides up to 40 hours of battery life Take calls, control music and activate Siri with multifunction on-ear controls Soft over-ear cushions for extended comfort and added noise isolation