Tuning range:A0 (27.5Hz) – C8 (4186Hz) Tuning modes:Chromatic, Guitar-Standard, Guitar-Compensated, Bass A4 calibration:430Hz – 450Hz Tuning accuracy:±0.1 Cent Power:9V DC, Negative tip Current draw:less than 100mA Dimensions:97.4(L) x 43.5(W) x 41.6(H) mm Weight:197.4 g