Great for guitar and orchestral instruments, the Cherub WMT-555C combines a chromatic tuner with a digital metronome in a convenient palm-size unit. You can tune to 4 different keys including C, F, Bb and Eb. Calibrate pitch from 435-445Hz. Features 1/4" input, built-in microphone and a built-in tone generator. Adjustable time signature and value. Time signatures include: -/4 (0); 1/4; 2/4; 3/4; 4/4; 3/8; 6/8. Tempo: 30-230 BPM. Tuning Range: AO(27.5Hz)-a3(1760Hz). Includes clip-on pickup for tuning acoustic instruments.