What Is Self-Winding Watch?
A self-winding watch does exactly what its name implies with a little help from you. Self-winding or automatic watches don’t use batteries to keep them running. Instead, this type of watch continues to run based on the movement of the wrist that is wearing it. How does it do that? Inside the watch there is a weight that also functions as a rotor. When the arm moves, it causes the rotor to move, and when the rotor moves, it winds the mainspring of the watch. This spring is what makes the watch function.
