A watch winder is a device created to store automatic watch winder and keep it running when it is not worn. To find out how a watch winder operates, you must first learn about how self-winding watch works. As the name suggests, a self-winding watch is a watch that works on the principle of winding itself using a moving weight that is located on the inside of the watch. When the watch is being worn, the weight would swing or rotate, turning the winding mechanism inside the watch. This would mean, that if the watch is not being worn, then the winding mechanism would not receive the power from the movement of the weight, thus the machine would eventually run down. Generally speaking, you can manually wound the watch manually, but you might find it inconvenient at times.

            This is where an automatic watch winder comes in. A watch winder is a storing device that is equipped with holders for one or more self-winding watches. The holders are equipped with an automated rotating machinery that mimics a wrist’s movement. Watch winders offer several modes of rotation, which include speed, direction, and idle time. Speed has a direct and quadratic correlation with internal mechanical watch stress. Direction is important because some automatic watches only collect energy in one rotation direction. Idle times are important to avoid overwinding and mechanical stress. Watch winders are most commonly fed by electricity through a cable and an AC/DC transformer. An AC powered watch winder requires a power cord that plugs into the wall, somewhat limiting the placement of the winder. Yet, if you are considering a winder with multiple heads, it might be more practical to get an AC powered watch winder.
A DC powered winder is powered by a battery. If you want the winder to be mobile, or if you will be storing the winder in a safe, then a battery operated winder will most probably be the most practical.

            Watch winders are designed to store your self-winding watch and winds it as per specification of the manufacturer. When you leave your self-winding watch idle for a few days, it is not unlikely for the mechanism of the watch to fault, and ultimately stop. Furthermore, if this happens quite often, the winders would cause the oil lubricant in the machinery to harden and you would have to send it to a repair shop. But, with watch winders, you could prevent all of that, and save yourself a considerable amount of time and money from resetting a watch’s complex function.