A bracelet clasp including a securing member provided with an adjustment device for adjusting the useful length of the bracelet, this adjustment device including a base plate secured to the second end of the first strip, a cap pivotally hinged to the base plate, the first strand passing between the base plate and the cap and being held by a holding device, second device for locking the cap in the closed position on the base plate. The second locking device include a push-piece arranged to be moved between a first rest position in which the cap is locked in a closed position on the base plate, and a second pushed-in position in which the cap is unlocked from the base plate.

A buckle assembly can include a first buckle, a second buckle, and an operating component. The first buckle component can include a locked portion. The second buckle component can be configured to be engaged with the first buckle component, and the second buckle component can include a locking portion engageable with the locked portion. The operating component can be partially embedded in the second buckle component and partially exposed out of the second buckle component. The operating component can be slidable relative to the second buckle component such that sliding movement of the operating component relative to the second buckle component causes disengagement between the first buckle component and the second buckle component. The operating component can include an abutting portion, and the abutting portion can abut against the locking portion to resiliently deform the locking portion during the sliding movement of the operating component.

A buckle assembly can include a first buckle, a second buckle, and an operating component. The first buckle component can include a locked portion. The second buckle component can be configured to be engaged with the first buckle component, and the second buckle component can include a locking portion engageable with the locked portion. The operating component can be partially embedded in the second buckle component and partially exposed out of the second buckle component. The operating component can be slidable relative to the second buckle component such that sliding movement of the operating component relative to the second buckle component causes disengagement between the first buckle component and the second buckle component. The operating component can include an abutting portion, and the abutting portion can abut against the locking portion to resiliently deform the locking portion during the sliding movement of the operating component.