For a self-winding watch to function properly, the mainspring must build up a sufficient power reserve. Many people are unaware that a self-winding watch needs to be wound first manually before it will run automatically. This is called the initiation process. Without the initiation process, the watch will never operate properly or consistently.
To initiate the power reserve, the watch must be wound manually. Turn the winding crown at the 3 o’clock position, in a clockwise direction for about 15-20 revolutions. This start up wind is usually sufficient for most automatic watches.
(WARNING!) Please do not continue to wind your timepiece you feel that the spring is already fully loaded otherwise the clockwork may be damaged.
After completion of the initiation process, the watch will wind itself automatically (rebuilding the power reserve) by means of an oscillation weight that shifts every time the watch’s position is changed by the action of the arm and wrist. Put on your watch and swing your wrist back and forth for approximately 30 seconds to initialize power reserve.
A self-winding watch should be worn at least eight hours a day to maximize the power reserve. If this is not possible, or if the watch has been off the wrist for more than 12 hours or has stopped working, the initiation process must be repeated.