06:1106:11, 4 January 2010diffhist−97
Automatic watch
Removed reference to "unbreakable mainspring." Unbreakable refers to a specific alloy used for the spring, not the winding clutch
06:1106:11, 4 January 2010diffhist−97
Automatic watch
Removed reference to "unbreakable mainspring." Unbreakable refers to a specific alloy used for the spring, not the winding clutch