The small format FT-004 Clip-On Chromatic Tuner from Fender is easy to operate even under darkened stage conditions. Built-in vibration sensor for accurate tuning in noisy areas. The large LCD display with easy-to-read needle shows white when out of tune and bright green when in tune. Small, compact size one-handed swivel clamp. Tuning modes include: Guitar, Bass, Ukulele, Violin and Chromatic. Tuning range B0 B7. A4 Calibration: 440Hz. Lightweight: 30 grams. Power: 3V2032 cell battery (one piece)Small format for discrete and simplified placement Accurate tuning in noisy areas Large LCD that"s easy to read in the dark Works with most stringed instruments