Automatic clip-on tuner with tuning range A0 (27.5 Hz)~C8 (4186 Hz) and tuning precision ±1 cent. Tuner automatically turns on when the tuner head stands up, and turns off when the tuner head falls down, or after 5 minutes if there is no input signal. LCD display operates with 3 colours to simplify the tuning process. Operates with one 3 V (CR2032) lithium battery. Dimensions: 53 x 35 x 27 mm, weight: 21 g, black colour with white Cherub logo.