Watch comprising at least one case and a strap formed by a flexible blade with a first end fixed to the case and a second opposite end provided to cooperate with a device for attaching and adjusting the length of the strap. According to the invention, the adjustment device comprises a clasp formed by a cap and a lever between which the flexible blade slides, the clasp being hinged on the case by linking means which define an axis of rotation about which the lever can undergo a rotation in order to be able to move into an open position and into a closed position, the lever comprising an eccentric which is integral with the lever in the vicinity of the axis of rotation and is provided in order to clamp the free end of the blade against the cap and to retain the strap when the lever is in the closed position.

The disclosed strap adjustment devices may include a pinion gear, with a first rack secured to a first strap and a second rack secured to a second strap each engaged with the pinion gear. A rotatable cam element may include an angled radially outer surface that is at an angle to a circumference of the rotatable cam element. A bearing element may be positioned adjacent to the angled radially outer surface such that the bearing element jams between the angled radially outer surface and a braking surface when the rotatable cam element is rotated in a jamming direction. A spiral spring may be coupled to the pinion gear and the rotatable cam element to allow for an increase in length of the first and second straps upon application of a tension force to the first and second straps. Various other methods, systems, and devices are also disclosed.

A portable electronic device is provided, including a main body, a C-shaped member, and a hinge module, wherein the main body includes a display surface and the C-shaped member includes an opening. The hinge module pivotally connects the main body with the C-shaped member. When the main body is situated in a first position, the main body covers the opening. When the main body rotates from the first position around an axis to a second position relative to the C-shaped member via the hinge module, the main body is away from the opening. An acute angle is formed between the axis and the display surface.

A portable electronic device is provided, including a main body, a C-shaped member, and a hinge module, wherein the main body includes a display surface and the C-shaped member includes an opening. The hinge module pivotally connects the main body with the C-shaped member. When the main body is situated in a first position, the main body covers the opening. When the main body rotates from the first position around an axis to a second position relative to the C-shaped member via the hinge module, the main body is away from the opening. An acute angle is formed between the axis and the display surface.

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.

A watch can include a first watch band portion and a second watch band portion both configured to be coupled with a mechanical watch. The watch can further include a circuit board associated with a controller, the circuit board and controller being removably retained by a clasp. The circuit board and the controller can be electronically and operatively independent from the mechanical watch.

A watch can include a first watch band portion and a second watch band portion both configured to be coupled with a mechanical watch. The watch can further include a circuit board associated with a controller, the circuit board and controller being removably retained by a clasp. The circuit board and the controller can be electronically and operatively independent from the mechanical watch.

A piece of multi-wrap jewelry (1) constructed from an elongated cord (2) having an adjustable anchoring loop (5) formed by placing opposing ends of the elongated cord through a slide (6) while crossing the elongated cord over itself. Loop fasteners (9) are located on opposing ends of the elongated cord to provide attachment points for clasps (11) and so forth and to allow an individual to adjust the length of the elongated cord.

A piece of multi-wrap jewelry (1) constructed from an elongated cord (2) having an adjustable anchoring loop (5) formed by placing opposing ends of the elongated cord through a slide (6) while crossing the elongated cord over itself. Loop fasteners (9) are located on opposing ends of the elongated cord to provide attachment points for clasps (11) and so forth and to allow an individual to adjust the length of the elongated cord.

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.