Chromatic tuner with no-button design that reaches even the lowest frequencies and automatically turns on when its head stands up. It also automatically turns off when the head falls down or in 5 minuted if there is not any input signal. Tuner provides tuning range of A0 (27.5 Hz)-C8 (4186 Hz) with accuracy of +/-1 cent and A4 range of 440 Hz. It is powered by one 3V (CR2032) lithium battery. Dimensions: 53 x 35 x 27 mm. Weight: 21 g.