Crownclasp
Crownclasp is also known as the Hidden Clasp. When the clasp is latched, it forms an illusion of a continuous bracelet with only a gold crown visible.
Oysterlock clasp
Oysterlock clasp is one of the most common clasps found on a Rolex bracelet.
Glidelock Clasp
Glidelock clasp is most often found on diving watches. The clasp allows diver to expand the bracelet of the watch by 18mm (total) to fit the band over a dive suite.
Ardillon Buckle
Ardillon Buckle or Tang Buckle is a traditional buckle where one end of the bracelet is slipped through a metal buckle and secured with a center pin. This buckle closely resembles a belt buckle.
Deployant Buckle
Deployant Buckle or a Fold-over Clasp is a buckle that secures the bracelet to the wrist through a set of interlocking metal pieces.