Wittner 880210 Taktell Super-Mini Case Metronome (Mahogany Wood)The Taktell Super Mini metronomes 880. 2 series are the world's smallest pendulum metronomes and feature a wooden, hinged front cover and a wind up mechanism. It also has a wooden, mahogany colored case. The metal swinging arm has a weight which moves down along its length to match the desired bpm, which is clearly marked on a metal back plate. Mahogany colored wooden case Hinged front cover 40 208 bpm World's smallest pendulum metronomes The metal