What is a “watch winder,” and do I need one?
Collectors who have more than one automatic watch may have difficulty keeping any one watch going continuously. This leads to increased inconvenience if calendars and moonphases must be reset. A solution has been invented – the automatic watch winder. The idea is quite simple: strap the automatic watch to a motor, which then moves the watch enough to keep it wound when not worn on the wrist. That way, one can choose to wear any watch at any time, and not have to reset the time or calendars. More importantly, using a watch winder will keep the watch rotating and thus preventing the oils and lubricants in the watch from drying up and causing damage over time.