The Buds Pro earbuds use touch to trigger control of functions. Please tap the touch area accurately to allow it to correctly identify gestures. The default ways to control functions are as follows: Music/standby Double tap to skip forward. Triple tap to skip back. Tap and hold to switch between Active Noise Cancellation and Transparency mode. Call Double tap to answer or hang up a call. Tap and hold to reject a call. For more operations, please download the Nothing X app mobile application, this is available for download on Google Play and iOS App Store. The Nothing X app supports setting different gestures to trigger different functions: volume up, volume down, voice assistant, skip forward, skip back and switching Active Noise Cancellation on, Active Noise Cancellation off, and Transparency mode.