The Midiclock, build by Erfindungsbuero Rest und Maier is a tiny but fine solution for timing issues of all types. BPM can be defined exactly by a clickable rotary knob built in a cigarette pack-like steelcase that starts and stops the output of the clock connected to two parallel Midi-jacks. it runs reliable in a way that several sets and/or devices can be incorporated without any timing problems. It takes a button to reset it on the fly and the power is supplied by USB. That´s it!