How long does it take to fully wind a self-winding watch?
That depends mainly on the temperament and the activities of the wearer. The maximum power reserve will be reached in a time that varies from a few hours to several days. When this maximum power reserve has been reached, an ingenious system enables the barrel-spring to disconnect within its drum in order to avoid excessive tension, which would lead to breakage of one or more parts of the automatic winding system.
