This wind-up metronome is a precision-made piece of machinery. It is spring driven (no battery required!), and comes with a protective face cover as well as a removable winding key. Measuring only 2 inches deep, 1 inch wide, and 4 inches high, this metronome is portable, and will fit inside nearly any instrument case or music bag.

MPN: 903010

The tempo range is from 40 beats per minute to 208 beats per minute.
Precision Compact Metronome from Wittner