Automatic Movement

A self-winding mechanical movement powered by the natural motion of the wearer’s wrist.

Extended Explanation:
An automatic movement, also called a self-winding movement, uses a rotor that spins with wrist motion to wind the mainspring. This eliminates the need for daily manual winding, unlike traditional hand-wound watches. Automatic movements are highly valued by collectors for their craftsmanship, smooth sweeping seconds hand, and the artistry involved in mechanical watchmaking.