Curved clip is designed especially to fit cellos, basses and guitars. Clips onto your instrument to tune using vibrations, or use with the built-in mic like a regular tuner. Tuning range A0 - C8, calibration from A = 430 - 450 Hz, 4 tuning modes (chromatic, guitar, bass and violin). The metronome has a tempo range of 30 - 250 bpm, 6 rhythms and beat settings from 0 - 9. The tone generator ranges from E1 to A5. Ultra-bright blue backlit LCD. Meassures 2 1/2" x 1 1/2" x 7/8", weighs only 1 1/2 ounces.