A great practice companion, the TU-30 offers is a versatile tuner and metronome in a compact package. It supports chromatic tuning, guitars, basses, and flat tuning. The convenient Accu-Pitch function sounds a tone when you've reached the correct pitch, and a reference pitch function makes it easy to verify tuning by ear. The metronome features multiple rhythm styles and visual display. It has a 1/4" input for direct tuning and a built-in mic for tuning acoustic instruments. Runs on two AAA batteries.