Extra large backlit LCD display. Turns green when in tune. Tunes chromatic, guitar, bass (low D to high C) violin, C ukulele and all wind instruments. Tunes down to 4 flats. Tuning guide LED’s. A4 range: 430-450 Hz. 2A to 6A tone generator plus guitar, bass, violin and C ukulele. Metronome tap tempo or 30-250 bpm. 9 beat settings, 8 rhythms. Large speaker. Volume control. Built-in mic. Earphone and input sockets. 2 x AAA batteries included. Black.