Convey parts: the gear system is driven by a set of gears, each of which are installed in large or small, on the shaft, teeth are connected to the power transmission device and the display time of the escapement portion. Accepted part: that escapement. It creates a pulse of what answer it will be allocated to the balance wheel power to make regular balance wheel vibration. Adjust parts: the balance wheel. It rhythmically back and forth, the average time a section is divided, adjust the rotation gear drive system, ensure the normal operation of the watch. http://www.feidawatch.com