Wittner 811M Wooden Metronome w/Bell (Mahogany Matte)High quality German craftsmanship from one of the most respected names in metronomes. Wittner metronomes with bell have the added advantage of being able to indicate the first beat of 2 4, 3 4, 4 4 and 6 8 time. Traditional windup power supply with visual pendulum movement and audible ticking sound. Two mode options with bell, or metronome ticking only. Adjustable from 40 208 beats per minute.