Wear the beat and keep perfect time! The wrist metronome is a visual metronome to be used with the Apple Watch. As long as you can see your wrist while playing your instrument or singing you can use this to not need to think about the song timing and pace anymore. Simply set the Beats Per Minute (bpm) from the app or on the watch itself. The time signature can be selected on the iPhone companion app and it will count each measure in time.