The buckle for a belt or a strap comprises an ardillion (800) mounted on a movable lever (801) for being placed in at least two positions, a upper one where the ardillion is not engaged in a hole of said belt or strap, and a lower one where the ardillon is engaged in a hole (7) of said belt or strap. Said lever is mounted in an adjustment lever (90) of the buckle that allows the belt to take at least a loose position and a tight position.

Clasp comprising a cover connected to a first bracelet strand and to a second bracelet strand, a connecting means being inserted between the second bracelet strand and the cover of the clasp, the connecting means comprising an end link sliding between a first position in which it is engaged in the cover of the clasp, and a second position in which it is outside the cover of the clasp, the end link comprising a push-button which causes a toothed element to change from a first position, in which the toothed element is in mesh with a rack toothing, to a second position, in which the toothed element is released, the end link being provided with an arresting means preventing the removal of the end link from the cover of the clasp, the arresting means comprising at least one lug, which projects into a groove arranged in the bottom of the cover and which defines two end stop members.

A clasp includes a lower holding member in which a lock pin is fixed, an upper holding member which is pivotably interlocked with the lower holding member, a lifting member which is attached to the lower holding member so as to be able to move in a lifting direction and a lowering direction and guides a first band, a lock member which is attached to the lower holding member so as to be able to pivot between a lock position and an unlock position, and a main cover. The lock member lifts the lifting member to the lower holding member side when being pivoted to the lock position so as to perform positioning and fixing of the first band while interposing the first band therebetween.

Bracelet having adjustable length, which includes an adjusting link (6) with two parallel transverse articulation pins (5, 7), a first (5) being fixed and the second (7) being able to pivot with respect to the first (5) so as to reverse the respective positions of the pins and respectively create two, short and long, configurations, and an end link (8) having a first end (8i) pivoted on the second pin (7) and a second end (8j) designed to accept the fixing of the end of one bracelet strand, this second end (8j) having at least one first cutout (8e) designed to house a center link element (10a) of a link at the end of said bracelet strand, and a transverse second cutout (8c) arranged between the two ends (8i, 8j) of the end link (8) to house the first pin (5) of the adjusting link (6) in the short configuration.

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 buckle includes a folding member, a buckle cover pivotably linked to the folding member, a slide plate supported slidably relative to the buckle cover in the longitudinal direction of the band, and a swing arm rotatably supported by the buckle cover. The slide plate has a plurality of groove sections provided along the longitudinal direction. The swing arm includes a base, an arm section, an engagement click, and an operation strip, and is supported rotatably in a first rotational direction in which the engagement click engages with any of the groove sections and in a second rotational direction in which the engagement click separates from the groove section. The folding member includes a protruding section that comes into contact with the operation strip to rotate the swing arm in the second rotational direction when the folding member is rotated relative to the buckle cover.

An adjustment device (100; 100′; 100″) for adjusting the length of a bracelet, having at least one adjustment assembly (10; 10′; 10″) movable relative to a clasp cover (7; 7′; 7″), the adjustment assembly and the cover being respectively provided with a first and a second fixing element (11, 71; 11′, 71′; 11″, 71″) for their respective fixing according to several positions capable of inducing different bracelet lengths, and also being provided respectively with a first and a second indexing element (21, 72; 21′, 72′; 21″, 72″) for their temporary respective positioning according to one of the several positions, the adjustment assembly (10; 10′; 10″) also comprising a guiding device including a first guiding element (3, 4, 5; 3′, 4′, 5′; 3″, 4″) cooperating with a second guiding element (74; 74′; 74″) of the cover (7; 7′; 7″) to guide the displacement of the adjusting assembly (10; 10′; 10″) relative to the cover (7; 7′; 7″), the first indexing element (21; 21′; 21″) being independent of and/or distinct from the first guiding element (3, 4, 5; 3′, 4′, 5′; 3″, 4″) and/or the second indexing element (72; 72′; 72″) being independent of and/or distinct from the second guiding element (74; 74′; 74″).

A band includes a clasp, wherein the clasp includes a cover member and an adjustment portion, the adjustment portion includes a pair of rail portions that are arranged along inner sides of two side walls of the cover member in a longitudinal direction of the cover member and have a plurality of grooves for length adjustment, a pressing portion that is disposed at an inner bottom surface of the cover member and includes an elastic member, and an engagement pin that is inserted through the one end of a adjustment piece and is configured to be engaged with the grooves of the rail portions, and the pressing portion is configured to press the engagement pin against the rail portions in a state where the engagement pin is engaged with the pair of grooves.

A device for finely adjusting the length of a bracelet inserted between two elements of the bracelet and includes an outer part attached to one, an inner part attached to the other and to slide in the outer part parallel to the longitudinal direction of the bracelet, causing the length of the bracelet to be varied, and a stop arranged to limit the travel of the inner part relative to the outer part so the bracelet cannot be extended beyond a maximum length. The outer part includes a wall having an immobilization hole on its inner side. The inner part includes a pivoting lever with a first end biased by a spring toward the outer part wall, permitting the first end to engage the immobilization hole, immobilizing the inner part relative to the outer part. The inner part has a control member permitting manual control of the lever.

A metallic watch strap, including a first metallic strap half and a second metallic strap half. The first metallic strap half extending along a longitudinal direction and having an upper side and a lower side. The second metallic strap half having a folding clasp with a first fastening structure equipped to be fastened to the first strap half and with a second fastening structure equipped to be fastened to the second strap half. The first fastening structure has a slide, which, in a first state, is displaceable relative to the first strap half in a guided manner, and including a fixation element, which, in a second state, abuts on the first strap half. The first strap half has fixation indentations and the fixation element has at least one fixation projection fitting into the fixation indentations. In the second state, the fixation projection engages into one of the fixation indentations.