Cecilio CM-50D Chromatic/Strings Tuner with Metronome and Clip/Mic Switch Clip on & turns 360 degrees for easy viewing, Mode: Chromatic, Guitar, Bass, Violin, Cello Tuner with Mic/Clip-On Switch Metronome function with simulated traditional pendulum motion Pitch Shift: 430 Hz to 445 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: 1.7" x 0.7" and LCD Display: Blue & Green Backlight Battery powered (CR2032 3V Battery Included), Dimension: 3" x 1.6" x 0.7"