Manual-Winding Movement
A mechanical movement whose mainspring is wound by turning the crown rather than by an automatic rotor.
Also known as: hand-wound movement, hand-winding movement, manual movement, manually wound movement
Definition
A manual-winding movement is a mechanical movement whose mainspring is tensioned by turning the crown. The crown drives the winding mechanism and barrel arbor, coiling the mainspring so it can release energy through the gear train, escapement and oscillator. Unlike an automatic movement there is no rotor continually replenishing the spring from wrist motion. Many hand-wound watches give increasing resistance as full wind is approached, and the owner normally rewinds the watch on a daily or multi-day schedule determined by its power reserve.
Why it matters
Manual winding can produce thinner, visually unobstructed movements and creates a direct interaction with the mechanism, but the wearer must remember to wind the watch before its power reserve is exhausted.