For people who do not wear their automatic or self-winding watch every day, or have more than 1 automatic watch, watch winders are available to store automatic watches and keep them wound. This is particularly advantageous if the watch had complex or perpetual calendars or moon phases. An automatic self-winding watch should be kept wound and running as much as possible to prevent its lubricants from congealing over time, which diminishes accuracy. This unit winds 4 watches at a time, and runs on included 110V-240V AC adapter, it also provides storage for 6 more watches, exterior is made of wood, interior is lined with soft leatherette and see through window is plexi-glass. This watch winder has 4 different program settings.