Automatic Watch winders are a device that rotates automatic or self-winding watches to ensure their power reserve does not deplete and keep your watch running smoothly when not in use. As you might know, automatic watches relies on the movement of the wrist to run its machinery. When you store your automatic watch in a regular box, the machinery would inevitably run out of power and shuts down, and you have to reset its complicated machinery again once you get it out of storage. Although not impossible, it is terribly inconvenient. Furthermore, if the machinery regularly shuts down, the oil lubricant inside the watch would start to harden, thus warranting a visit to the repair shop.