Wittner 855 Plastic Case Pyramid Metronome with Bell. A traditional syle pyramid metronome with swinging pendulum and wind up mechanism. Featuring an addional bell sound which can be added to the clicking rythm for eXtra emphasis. Made from durable plastic with a mahogany grain effect which gives it an authentic look. Features: Plastic Case Traditional Shape Wind Up Mechanism Swinging Pendulum Tempo Range 40 - 208 BPM Audible Click with bell - 4 beat settings Dimensions: 117 X 220 X 117mm