A band device according to an aspect of the present disclosure includes a sensor unit, and a band unit that is linked to the sensor unit and forms a hollow part together with the sensor unit. The band unit includes an end piece section to which a watch head section is attached, and an engaging section that makes detachable engagement in a state where the band unit is wrapped around a wrist.

A band device according to an aspect of the present disclosure includes a sensor unit, and a band unit that is linked to the sensor unit and forms a hollow part together with the sensor unit. The band unit includes an end piece section to which a watch head section is attached, and an engaging section that makes detachable engagement in a state where the band unit is wrapped around a wrist.

A jewelry enhancer is provided which may repurpose items of jewelry, display items of jewelry and be worn as an adornment. The jewelry enhancer includes a plurality of hinged rings, capable of opening, closing and securing multiple strands of string jewelry therethrough. The jewelry enhancer further includes a button-clip that can secure and display shank buttons, a bar pin cap able of affixing the jewelry enhancer to garments, a jewelry bale cap able of attaching the jewelry enhancer to items of string jewelry and a brooch bar capable of eclipsing the button-clip for a fashionable effect.

A bracelet having articulated links, including an articulation between a first link and a second link including a tongue that pivots in an opening between side flanges of this first link together forming a double clevis fitting, wherein, in the articulation, the first link or respectively the second link includes at least one external trunnion or respectively at least one internal trunnion arranged to pivot in an internal half-bearing of the second link, or respectively in an external half-bearing of the first link, the second link or respectively the first link includes at least an upper part and a lower part arranged to enclose and conceal therebetween each external trunnion or respectively each internal trunnion.

A bracelet having articulated links, including an articulation between a first link and a second link including a tongue that pivots in an opening between side flanges of this first link together forming a double clevis fitting, wherein, in the articulation, the first link or respectively the second link includes at least one external trunnion or respectively at least one internal trunnion arranged to pivot in an internal half-bearing of the second link, or respectively in an external half-bearing of the first link, the second link or respectively the first link includes at least an upper part and a lower part arranged to enclose and conceal therebetween each external trunnion or respectively each internal trunnion.

An arrangement includes two components (3, 4; 3′, 4′) of a timepiece component and an axis of rotation (A1; A1′), the two components (3, 4; 3′, 4′) being linked to one another by an elastic articulated link (100; 100′) about the axis of rotation (A1; A1′), the arrangement also includes an elastic element (10, 10′; 10″) such that the relative movement of the two components (3, 4; 3′, 4′) takes place against the elastic element (10, 10′; 10″), wherein the elastic element (10, 10′; 10″) includes at least two superposed springs (10a, 10b, 10a′, 10b′; 10a″, 10b″), each of these at least two springs (10a, 10b, 10a′, 10b′; 10a″, 10b″) taking the form of a distinct element.

An arrangement includes two components (3, 4; 3′, 4′) of a timepiece component and an axis of rotation (A1; A1′), the two components (3, 4; 3′, 4′) being linked to one another by an elastic articulated link (100; 100′) about the axis of rotation (A1; A1′), the arrangement also includes an elastic element (10, 10′; 10″) such that the relative movement of the two components (3, 4; 3′, 4′) takes place against the elastic element (10, 10′; 10″), wherein the elastic element (10, 10′; 10″) includes at least two superposed springs (10a, 10b, 10a′, 10b′; 10a″, 10b″), each of these at least two springs (10a, 10b, 10a′, 10b′; 10a″, 10b″) taking the form of a distinct element.

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.

A buckle includes a folding member linked to a band, a slide plate having a plurality of groove sections provided along the longitudinal direction of the band, a swing arm including an engagement click engageable with any of the groove sections, and a spring that urges the swing arm in a first rotational direction, and the folding member restricts rotation of the swing arm in the second rotational direction when the folding member is accommodated in the buckle cover, and cancels the restriction of the rotation of the swing arm in the second rotational direction when the folding member is detached from the buckle cover.

A device for adjusting the length of a wristlet includes: a cover (10); a link element (40) designed to be connected to a wristlet strand (9) and mounted movable relative to the cover (10) in the longitudinal direction in which extends a wristlet strand to be connected to the adjusting link element, such that this displacement of the adjusting link element (40) relative to the cover (10) enables lengthening or shortening the length of a wristlet strand; an actuating device (30) arranged on the cover (10) movable relative to the cover in at least the longitudinal direction; and a kinematic connection connecting the actuating device (30) and the adjusting link element (40), such that the actuation of the actuating device (30) in at least the longitudinal direction relative to the cover (10) can bring about the longitudinal displacement of the adjusting link element (40) relative to the cover (10).