Cecilio 92-D Chromatic/String Tuner with Metronome Chromatic tuner function with 8 octave tone generator Guitar, bass, violin, and cello tuner function (viola is the same as cello) Metronome function with simulated traditional pendulum motion Tempo range of 30bpm to 230bpm, 1/4 inch input jack and 3.5mm headphone jack, Volume control Large 2 1/4 inch LCD display screen, Battery powered