A watch winder is a device used to keep automatic or self-winding watches running when they are not being worn. Automatic watches run on kinetic energy and have a small rotor inside that turns with the movement of the wearer's wrist. When the wearer takes the watch off and sets it down, the watch will stop running after a period of time if it is not wound. A watch winder is a great solution to this problem. It is a device that holds the watch and rotates it in a circular motion, mimicking the movement of the wrist. This keeps the watch wound and ensures that it is always ready to wear. Some watch winders are designed to hold multiple watches at once, making them a great option for collectors or those with a larger watch collection. Watch winders can be powered by batteries or electricity and come in a variety of styles and sizes to fit any budget or decor.