A watch band is disclosed. The watch band maintains a substantially constant tension throughout changes in its length while worn by a user. Such changes in length may occur automatically to accommodate changes in the size and circumference of a user's wrist as they move their wrist normally. By maintaining a constant tension, the watch band also maintains a constant force on the user's wrist, and causes a watch body attached to the watch band to also maintain a constant force on the user's wrist. This can increase a user's comfort, since the watch will not get tighter or constrict their wrist as they straighten and bend their wrist. It can also help optimize operation of any sensors in the watch band or watch body that benefit from being held against the user's wrist with a constant force, such as some physiological sensors.

An attachment link for a watch band is arranged to attach the band to a watch case between the horns. A first end of the attachment link is fixed to a watch band strand and the second end of the attachment link is fixed to the case with a bar. The link is between the horns and against the case. The attachment link includes a device for blocking pivoting in order to firmly hold the attachment link between the horns.

A wearing band including plural first zigzag springs and plural second zigzag springs. The plural first zigzag springs have axial directions in a length direction of a band body that is formed in a belt shape or a ring shape. The plural first zigzag springs are arrayed in the length direction and a width direction of the band body so as to form a section stretching and contracting in the length direction of the band body. The plural second zigzag springs have axial directions in the width direction of the band body and are arrayed in the length direction and the width direction of the band body so as to form a section stretching and contracting in the width direction of the band body. The plural second zigzag springs have a spring constant different to a spring constant of the plural first zigzag springs.

A replacement wrist band may include a display and at least one replaceable module formed on the wrist band itself.

A wearable accessory is provided along with an adjustable linkage and a functional element. In regards to the adjustable linkage, the adjustable linkage includes first and second linkage portions spaced apart from one another to define a channel therebetween. Each linkage portion includes a sidewall defining first and second openings. The second opening defined by each linkage portion includes a plurality of holes spaced in a longitudinal direction to provide sizing options. The adjustable linkage also includes fasteners extending through respective holes the second openings defined by the first and second linkage portions so as to rotatably connect a link of the accessory to the first and second linkage portions. The first and second linkage portions are separate components attached to one another by their mutual attachment to the link of the accessory.

A watch strap with a plurality of quickly interchangeable, decorative plates attached to express a person's characteristic or style. The watch strap allows for the removal of decorative plates on the watch strap via manipulating a tab attached to the plates. Another variation of the invention is to depress a button, attached to the plate, beneath the watch strap. The plates may also be removably secured via a plurality of screws.

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 replacement wrist band may include a display and at least one replaceable module formed on the wrist band itself.