Cecilio AT-10 Chromatic/Strings Tuner with Metronome Chromatic, Guitar, bass, violin, and cello tuner mode (viola is the same as cello) Metronome function with simulated traditional pendulum motion Pitch Shift: 430 Hz to 449 Hz, Downbeat: -/4, 1/4, 2/4, 3/4, 4/4, 3/8, 6/8 beats, Tempo Range: 30 bpm to 230 bpm LCD Screen: 2.4" x 0.9" and LCD Display: Blue & Green Backlight Battery powered (2 x AAA batteries included), Dimension: 4.25" x 2.5" x 0.6"