Wittner W-801 Wood Case Metronome Without Bell (Mahogany Gloss)Excellent German craftsmanship and the highest grade hardwoods are coupled to produce these wood case models in three finishes. The famous wind up mechanism produces the visual pendulum signal along with an audible tick at the end of each stroke. Tempo selector is adjustable from 40 to 208 beats per minute. The famous wind up mechanism produces the visual pendulum signal along with an audible tick at the end of each stroke Tempo selector is adjustable