Metronome, Wide Applicability Electronic Metronome for Musical Instruments Specification: Item Type: MetronomePower: 2 x AAA batteries(not included) Color: Black Tuning Items: Twelve averages, guitar, bass, violin, wind instruments Tuning Mode: C Speed Range: 30-250bpm Tuning Range: 0A-8C : 0-9 A4 Frequency Range: 430HZ-450HZ Duration: 0-8 Pickup Accuracy: 1 cent Error: 1%Size: Approx. 10 x 6.2cm / 3.9 x 2.4in Package List: 1 x Metronome 1 x Pickup Clip 1 x User Manual