Boss TU80WH TU-80 Tuner/Metronome Supports chromatic tuning, plus 7-string guitars and 6-string basses^Accu-Pitch function sounds a tone when pitch is correct^Reference Tone Play function makes it easy to verify tuning by ear^Memory function stores your favorite tuner setting^Metronome has 7 rhythms, 10 beats and cool animated LCD display