Tungsten alloy for self-winding watch has excellent properties such as high strength, high hardness, wear resistance, and corrosion resistance. It is the best raw materials for the manufacture of watches. The rudder is an important part of automatic mechanical watches.
The automatic mechanical watch is an improvement of the manual mechanical watch. A swaying rudder is added to the watch. When worn, the oscillating weight in the watch is rotated by the wrist to achieve the effect of winding. The general automatic mechanical watch still retains the ding of manually winding. In other words, you can still turn the crown to wind up. Only some cheaper automatic mechanical movements will omit the secondary ding. Because the wrist's activity will keep the watch continuously wound, the automatic mechanical watch has a ding to prevent the clockwork from being too tight so as to prevent breakage.
More details, please visit:
http://www.tungsten-alloy.com/actuator.htm
