Cherub Digital Portable Metronome WSM-240 Black. Metronome and Tone Generator || Measure indicator makes practice easier || Pre-beat (up beat) function gets the player ready to start the song. || Vertical metronome (downbeat indicator) gives a more direct view of the beat. || Using encoder to control speed makes the operation simpler and faster. || Auto-off function. The machine will automatically turn off if there is no operation for 5 minutes. || Saves settings upon power-off. ||