JOYO clip on guitar tuner metronome with colour display for chromatic guitar bass ukulele violin. Easy to use clip on tuner and metronome. Easy to read full colour display. Display rotates 360 degrees for easy view. Support mic and clip tuning modes. Can stand the unit on a flat surface or clip this unit on a flat surface or clip this unit onto the instruments. It has tuner, metronome and TAP tempo metronome functions. More accurate, high sensitive and wide running range. Power off automatically for saving the battery. High cost-effective tuner and metronome. Power: 9V DC, 6F22 battery. Tuning range: 0A (27.5Hz) - 8C (4186.01Hz). Tuning: chromatic.