A jewelry item comprises a ring-shaped spring; a ring-shaped chain comprising a plurality of chain links wherein each chain link is slidably attached to the support element; each chain link comprises a plate having a first surface facing the spring and a second surface opposite to the first surface; a seat and a hook opposite to each other, the hook is inserted into a seat of a subsequent chain link so as to lock the chain links to each other while allowing the chain links to reversibly slide from a contact position to a distanced position with respect to each other.

A strap for a wearable device configured to secure to a portion of a body of a user can include a base and a plurality of strap members secured to portions of the base. In some implementations, the base is made of a first material and each of the plurality of strap members are made of a second material, the first material being more pliable than the second material. In some implementations, the base includes a plurality of openings spaced from one another along a length of the base and a plurality of stems. In some implementations, each of the plurality of strap members is a channel secured to one of the stems. In some implementations, the first material includes at least one of rubber and silicone and the second material is a metallic material.

A tracking device, including a communication interface encased in a encasement with a receptacle on two opposite sides of the encasement, a strap, including one or more thin elongated flexible sheets, links coupled to one side of the one or more thin elongated flexible sheets, a fiber optic cable extending from a first end of the one or more thin elongated flexible sheets to a second end of the one or more thin elongated flexible sheets, a head connected to each end of the one or more thin elongated flexible sheets; wherein the heads are configured to fit into the receptacles and lock the strap in the receptacles thus preventing the strap from sliding out of the receptacles; and wherein the communication interface is configured to detect tampering with the strap by transmitting an optical signal through the fiber optic cable.

A belt is configured to be worn around a waistline of a pair of pants. The belt includes a belt buckle located at a first terminal end of the belt, a belt strap end segment including at least two adjoined link sections at a second terminal end of the belt, and a belt strap middle portion extending between the belt buckle and the belt strap end segment and including a plurality of binary, repeating, alternating belt strap component segments of two varieties, a first variety including a plurality of stacked, unconnected link sections and second variety including a plurality of stacked, adjoined link sections.

A tracking device, including a communication interface encased in a encasement with a receptacle on two opposite sides of the encasement, a strap, including one or more thin elongated flexible sheets, links coupled to one side of the one or more thin elongated flexible sheets, a fiber optic cable extending from a first end of the one or more thin elongated flexible sheets to a second end of the one or more thin elongated flexible sheets, a head connected to each end of the one or more thin elongated flexible sheets; wherein the heads are configured to fit into the receptacles and lock the strap in the receptacles thus preventing the strap from sliding out of the receptacles; and wherein the communication interface is configured to detect tampering with the strap by transmitting an optical signal through the fiber optic cable.

A jewelry system with interchangeable decorative segments is provided. The jewelry system includes a plurality of decorative segments, each such segment having a center aperture that extends through the segment along a vertical axis in the center of the segment from a top surface to a bottom surface. The jewelry system also includes a central rod for receiving one or more segments, the rod including a stopper at the lower end to support the received segments and an eyelet at the upper end to receive a chain which when received, prevents the received segments from slipping off the top part of the rod while also facilitating the jewelry to be worn.

A flexible device includes: a functional element: a first movable element; a second movable element movably connected with the first movable element, in which a movement of the second movable element relative to the first moveable element drives the flexible device to deform.

Disclosed is a wearable electronic device that includes a strap detachably fastened to at least a part of a housing and including a plurality of unit links, a button operatively exposed from at least one of the plurality of unit links, a tension rib secured to an end portion of the button in an internal space of the unit link and having opposite ends that have positions that are changed by pressing of the button, and a hinge pin secured to each of the opposite ends of the tension rib, and disposed to at least partially protrude from left and right sides of each of the unit links, wherein the plurality of unit links are fastened to or separated from each other, such that the hinge pins of a unit link, moving by means of the pressing of the button, are inserted into or extracted from pin-receiving recesses formed in an adjacent unit link.

Accessories, such as articles of jewelry, are provided having one or more keepsakes that may slide to on or off the accessory substrate. The keepsakes may have a decorative front side and a rear side that may cause the keepsake to encircle the substrate. The rear side may have a greater length than the front side, which may permit natural spacing between the front sides of adjacent keepsakes.

An article of jewelry or costume jewelry having at least one elastic or flexible support element and a plurality of ornamental elements fitted in succession on the elastic or flexible support element and coupled two by two along a development direction of the article of jewelry or costume jewelry is provided. Each ornamental element has a first coupling face for coupling to a subsequent contiguous ornamental element, the first coupling face having a raised formation, and an opposite second coupling face for coupling to a previous contiguous ornamental element, the second coupling face having a recess complementary in shape to the raised formation of the previous contiguous ornamental element. Two contiguous ornamental elements are coupled together by accommodating the raised formation of a first element of the two contiguous ornamental elements within the recess of a second element of the two contiguous ornamental elements, with at least one shock-absorbing spacer element arranged therebetween.