Over-ear headphones with Active Noise Cancellation and Transparent Hearing functionality. There's a 3-button interface for controlling music and talking calls, and integration with the voice assistant on your phone too. The Sennheiser Smart Control app is available for iOS and Android and provides three different noise cancellation modes and a built-in equalizer, and with smart TILE technology so you can also locate your headphones. Battery life is up to 17 hours and Bluetooth 5.0 is supported.