chord instruments chromatic, guitar, bass, violin, ukulele, banjo and wind instruments with F, Bb, Eb keys. The perfect tuner for your stringed instruments. Easy, Clip-on Stage TuningThis guitar tuner can be easily clipped onto your instrument and easily tuned with one hand. Thick rubber pads on the clip protect the finish of the instrument. Lightweight, portable and compact. 360Rotating Clip Tuner360rotation allows this tuner to be rotated to any desired angle. Tuner with high contrast and clear LCD display provides excellent visibility. Fast and AccurateBuilt-in high-sensitivity piezoelectric sensor ensures extremely accurate tuning. Tone is measured by determining the frequency of vibration, which is more accurate. The tuning range is from A0 (27.5Hz) to C8 (4186.01Hz). Auto power-off functionContains one CR2032 battery. Ultra-low power consumption and auto-off features save power and extend battery life.