Disclosed herein is a controller which allows a movement of a band in a first direction to be free but allows a movement of the band in a second direction to be selective.

According to an example aspect of the present invention, there is provided a strap for a wearable device having a terminal device. A fixed buckle is provided to one end of the body of the strap to receive the strap body through the fixed buckle in a looped configuration of the strap. A slide buckle is provided movably to the strap body and has an open keeper hook for removably receiving an excess portion of the strap body through the keeper hook. The strap has a first keeper counterpart provided on the strap body, and a second keeper counterpart provided to a second end of the strap body for attachment to the first keeper counterpart.

According to an example aspect of the present invention, there is provided a strap for a wearable device having a terminal device. A fixed buckle is provided to one end of the body of the strap to receive the strap body through the fixed buckle in a looped configuration of the strap. A slide buckle is provided movably to the strap body and has an open keeper hook for removably receiving an excess portion of the strap body through the keeper hook. The strap has a first keeper counterpart provided on the strap body, and a second keeper counterpart provided to a second end of the strap body for attachment to the first keeper counterpart.

The present invention provides a band for encircling another object with latch attachment. The band includes a plurality of layers, combined together in a stacked arrangement, where the front side facing of the first layer will form a front side facing of the band, and the back side facing of the last layer will form a back side facing of the band. A latch attachment including a latch connection point, where the latch attachment is located between two adjacent layers of the plurality of layers at an internal position along a length of the band proximate to one end of the band, but still a distance away from an edge of said one end of the band. Each layer between the location of the latch attachment within the stack of the plurality of layers and the back side facing of the band has a corresponding aligned opening in the layer for exposing the latch connection point through the back side facing of the band.

A bracelet clasp including a securing member provided with an adjustment device for adjusting the useful length of the bracelet, this adjustment device including a base plate secured to the second end of the first strip, a cap pivotally hinged to the base plate, the first strand passing between the base plate and the cap and being held by a holding device, second device for locking the cap in the closed position on the base plate. The second locking device include a push-piece arranged to be moved between a first rest position in which the cap is locked in a closed position on the base plate, and a second pushed-in position in which the cap is unlocked from the base plate.

A wearable device is disclosed, which comprising: a device body (100) provided with a controller; two straps, ends of the two straps are connected to two ends of the device body (100) respectively, and other ends of the two straps are connected to each other and are partially overlapped; a length measurement mechanism comprising a detection part and a color sensor respectively provided on the two straps, the color sensor is electrically connected to the controller, and a color of the detection part identified by the color sensor represents the overlapping length between the two straps; and a tightness adjustment mechanism provided on the straps, the overlapping length between the two straps are adjusted by the tightness adjustment mechanism, so as to adjust a tightness of the wearable device, therefore providing the wearable device capable of more accurately adjusting the tightness.

A watchstrap is provided with a novel ratcheting buckle and strap, whereby the user may incrementally adjust fitment of a corresponding watch via a ratcheting mechanism embodied between the ratcheting buckle and strap. The strap includes a first strap portion and a second strap portion. The first strap portion has a linear rack and a plurality of teeth embedded in the linear rack. The second strap portion is coupled to a buckle wherein the buckle is configured to slideably engage with one or more of the plurality of teeth as the first strap portion is inserted through the buckle and translated therethrough. Terminal ends of both the first strap portion and the second strap portion are each configured to couple to the corresponding watch.