For years, the TU-80 Tuner & Metronome has been an essential tool for musicians and music educators everywhere. With the TU-30, BOSS delivers the TU-80's main features in an even more compact size. All the basics are carried over, including Accu-Pitch, multiple tuning modes and rhythm patterns, the ability to sound reference pitches, and more. Combining trusted BOSS tuning with a versatile metronome, the TU-30 is a must-have companion for learning, practice, and performing. - Pro BOSS tuner and versatile metronome in one - Supports chromatic tuning, guitars, basses, and flat tuning - Convenient Accu-Pitch function sounds a tone when you’ve reached the correct pitch - Reference pitch function makes it easy to verify tuning by ear - Metronome features multiple rhythm styles and visual display - Instrument input for tuning electric guitars, basses, and other instruments - Built-in mic for tuning acoustic instruments - Runs on two AAA batteries - Dimensions: 90 x 60 x 25 mm - Weight: 90 g.