An automatic movement works largely the same way as a manual movement, with the addition of a metal weight called a rotor. The rotor is connected to the movement and can rotate freely. With each movement of the wrist, the rotor spins, transferring energy and automatically winding the mainspring. An automatic watch winder is highly recommended for the wearer that does not wear the watch daily. As the watch will stop ticking after a certain time period, and a reset is needed when there’s no movement. Some longer than others, depending upon the manufacturer’s quality and standards.
