A link system having a first piece and a second piece both including an elongated portion, a first end extending from the elongated portion and curved to form a first opening, and a second end extending from the elongated portion curved to form a second opening wherein the curved ends forming the opening of the second piece extend respectively through the openings of the first piece to interlock the first piece with the second piece and wherein the openings of the first piece are movable along the curved portion forming the openings of the second piece respectively such that the hinge is adjustable.

The wearable device may include a first aligned link coupled to a second aligned link, with a dome cover therebetween to conceal a linking between the first aligned link and the second aligned link. The first aligned link and the second aligned link may be movable relative to each other and with a constriction of a predetermined angle of the movement between the first aligned link and the second aligned link.

A band configured to wrap around and be secured to an object includes at least three members pivotably connected to one another so as to be pivotable between an open position and a closed position, the first member including an outwardly disposed face defining an imaginary plane and each of the second and third members including an actuator prong that extends outwardly beyond the imaginary plane when in the open position and that is retracted to no longer extend outwardly beyond the imaginary plane when in the closed position. Movement of the object into contact with the first member so as to exert actuation forces toward the outwardly disposed face when the actuator prongs are in contact with a surface causes the second and third members to move from the open position to the closed position due to forces created between the actuator prongs and the surface.