A type of buckle that pops open and fastens using hinged, often adjustable, extenders. Though more expensive than a belt-buckle like closure, a deployment buckle is easier to put on and remove and is more comfortable on the wrist.

Two strips of hinged metal (curved to the wrist shape) on the watchband; upon closing, one folds over the other to cover it. Probably invented by Cartier.

Foldover ): A three-folding enclosure that secures the two ends of the bracelet and allows enough room for placing the watch on the wrist when fully deployed. When closed, the buckle covers the two-piece folding mechanism.