A customizable necklace comprising a necklace body, a first fastener and a second fastener. The necklace body forms a closed loop. The first fastener is configured to disconnectably and selectively secure to different positions along the necklace body. Similarly, the second fastener is configured to disconnectably and selectively secure to different positions along the necklace body. The customizable necklace system is configured to adopt multiple usage positions, in which the first and second fasteners are attached to the necklace body and to one another forming a first loop and a second loop, wherein the first loop has a different size in each usage position and the second loop has a different size in each usage position.

The method for determining at least one morphological data item of a wriststrap wearer in order to prepare (E3) a wristwatch strap taking into account this item includes: acquiring (E1) at least one morphological data item (1; 2) of the wriststrap wearer from an acquisition device of a determination system (11) provided with at least one sensor, such as a camera, a laser or a lens, configured to scan, photograph, or film at least a portion of the wrist and/or hand of the wearer, wherein the determination system (11) is designed to receive and optionally emit waves to acquire at least one morphological characteristic of the wearer of the bracelet in a first operation (O11), the at least one morphological data item being a dimension (1) from among a circumference and/or height and/or width of a wrist portion (p1) and/or of a portion of the hand (p2) of the wearer.

The invention relates to a clasp for bracelets with a length adjustment device, wherein the adjustment device is devoid of a locking mechanism for blocking the length adjustment and/or of an activation member for unblocking a locking mechanism in order to allow the length adjustment in at least one direction of the length of the bracelet. The clasp enables a user to finely adjust the useful length of the bracelet by thrust or traction on the bracelet strand.

The method for determining at least one morphological data item of a wriststrap wearer in order to prepare (E3) a wristwatch strap taking into account this item includes: acquiring (E1) at least one morphological data item (1; 2) of the wriststrap wearer from an acquisition device of a determination system (11) provided with at least one sensor, such as a camera, a laser or a lens, configured to scan, photograph, or film at least a portion of the wrist and/or hand of the wearer, wherein the determination system (11) is designed to receive and optionally emit waves to acquire at least one morphological characteristic of the wearer of the bracelet in a first operation (O11), the at least one morphological data item being a dimension (1) from among a circumference and/or height and/or width of a wrist portion (p1) and/or of a portion of the hand (p2) of the wearer.

A wristlet clasp (100), of the folding buckle type, including first and second blades (1, 2) hinged relative to each other, the first blade (1) further including locking means for holding the first and second blades (1, 2) in their closed position at its second end, and the second blade (2) carrying a member for fastening a first wristlet strand at its second end. The first and second blades are hinged together by movable blades (3, 4) by a first of their respective ends, the hinged blades being connected to the first and second blades via a first hinge (A1) and a second hinge (A2), the hinge (A1, A2) being angularly delimited by stops respectively formed on the first end of the first and second blades and on the second end of the movable blades so as to define two predefined wearing positions depending on the size of the wrist.

A clasp for a wristlet, the clasp including at least one set of four arms hinged with respect to each other so that the clasp can pass from a first position, referred to as the deployed position, wherein the arms are oriented radially towards the outside of the wristlet, to a second position, referred to as the closed position, wherein the arms are folded against each other so as to be placed under the wristlet, this set of four hinged arms including two sets of compasses formed by two arms joined by a hinge, the free end of the arms being mounted pivotally, on a first and on a second part of the wristlet.

A bracelet clasp including first and second blades, the first blade being articulated to the second blade by a first end, between a closed position, in which the second blade is folded over the first blade, and an open position in which the second blade is free from the first blade, the second blade bearing, at a second end, a member for fastening a first bracelet strand, a second bracelet strand being connected at least indirectly to the first blade. A locking device holds the first blade in its closed position. A device for adjusting the wear length of the bracelet includes a cover mounted on a base plate secured to the second end of the second blade, and the member for fastening the first bracelet strand sliding between the cover and the base plate in a longitudinal direction of the clasp between a first position in which the fastening member is at least partially engaged in the cover of the clasp towards at least a second position in which the fastening member is free from the cover of the clasp by pressure on the cover in a direction perpendicular to the clasp to cause same to slide.

The invention relates to a clasp for bands comprising a device for adjusting the length, wherein said adjustment device comprises a pivotally arranged member, and the said member can be activated by a user in order to activate the length adjustment. Preferably, the said pivoting element is part of the clasp cover. Preferably, the said pivoting element is articulated by means of axes that correspond to the shafts of the pushers of the clasp-locking mechanism.

The invention relates to a bracelet lengthening device, comprising at least one adjusting assembly (1, 2) that is movable relative to a clasp cover (21), the adjusting assembly (1, 2) and the cover (21) being provided with a first and a second fastening element (23, 35′), respectively, for fastening them respectively in several positions that are able to bring about different bracelet lengths, characterized in that the adjusting assembly (1, 2) and the cover (21) are also provided with a first and a second indexing element (15, 35), respectively.

A clasp for a watch bracelet including a cover connected on a first side to a first bracelet strand and on a second side to a second bracelet strand, a connection between the second bracelet strand and the cover of the clasp, the connection including a connecting link sliding in a longitudinal direction of the clasp between a first position and a second position. The clasp includes at least one first and one second bars mounted in the cover, and the connecting link includes a lever provided with a hook capable of moving from a first position wherein the hook is engaged with a first bar integral with the cover of the clasp, into a second position wherein the hook is released from the engagement thereof with the first bar and the link is free to slide so as to engage the second bar with a hook.