Active Noise Cancelling (ANC) blocks external noise Up to 22 hours of listening time (up to 40 hours with ANC and transparency turned off) Features the Apple H1 Headphone Chip and Class 1 Bluetooth for extended range and fewer dropouts Compatible with iOS and Android Built-in microphone allows hands-free controls via “Hey Siri” on iOS devices, and voice capability with the push of the b button on a variety of compatible devices High-performance wireless noise cancelling headphones Transparency helps you stay aware of your surroundings while listening