The innovative sensors are engineered to automatically control engaging dynamic audio and convenient hands-free experience, which activates the high-quality microphone chip to smartly pick up calls, enabling Sound Capsules to play crisp clear sound as well as offers clear conversations with your friends & peers. You can also play or skip forward with a double-tap when listening to music. A high-quality voice detecting receiver recognizes when you're speaking and works with a pair of noise-cancelling microphones to filter out external, ambient noise to focus on the sound of your voice.