Simple and Easy to Use The headphones automatically turn on when they are removed from the case for quick usability (pairing is required on first use). When the headphones are put back in the case, they power down and begin charging. Supports Fast Pair for convenient connection with Android devices (only one Android device can be paired by using Fast Pair). Listen to music or make calls from one or both headphones, whichever best suits your usage environment. Touch sensor control allows users to play or pause music, skip between tracks, answer calls, and adjust the volume without having to use your smartphone.