Active Noise Cancelling (ANC) blocks external noise 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 
Auto On/Off when you unfold and fold your headphones
“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