Automatic clip-on chromatic tuner with an LCD screen that provides an accurate tuning for guitar or bass guitar. It provides a tuning range from A0 (27.5 Hz) to C8 (4186 Hz) with +/- 1 cent accuracy and pitch calibration of 430-450 Hz. It also features an automatic power on/off function. Tuner is powered by one 3V CR2032 lithium battery. Blue colour.