A band device according to an aspect of the present disclosure includes a sensor unit, and a band unit that is linked to the sensor unit and forms a hollow part together with the sensor unit. The band unit includes an end piece section to which a watch head section is attached, and an engaging section that makes detachable engagement in a state where the band unit is wrapped around a wrist.

A band device according to an aspect of the present disclosure includes a sensor unit, and a band unit that is linked to the sensor unit and forms a hollow part together with the sensor unit. The band unit includes an end piece section to which a watch head section is attached, and an engaging section that makes detachable engagement in a state where the band unit is wrapped around a wrist.

A reversible watch insertion connector includes a connector body for connecting a watchband with a dial, where the connector body is slidably inserted into an insertion groove defined in the dial and the connector body is snap-fitted with the dial by a position securing slot defined in the insertion groove. Two movable buttons operative to move up and down are symmetrically arranged on an upper side and a lower side of the connector body respectively. And between the two movable buttons is arranged an elastic expansion member that makes the movable buttons protrude out of the connector body. The two movable buttons are inserted into the insertion groove along with the connector body, and one of the movable buttons is locked into the position securing slot under the action of the elastic expansion member, so as to realize the connection and fixation of the connector body with the dial.

A reversible watch insertion connector includes a connector body for connecting a watchband with a dial, where the connector body is slidably inserted into an insertion groove defined in the dial and the connector body is snap-fitted with the dial by a position securing slot defined in the insertion groove. Two movable buttons operative to move up and down are symmetrically arranged on an upper side and a lower side of the connector body respectively. And between the two movable buttons is arranged an elastic expansion member that makes the movable buttons protrude out of the connector body. The two movable buttons are inserted into the insertion groove along with the connector body, and one of the movable buttons is locked into the position securing slot under the action of the elastic expansion member, so as to realize the connection and fixation of the connector body with the dial.

A wristband can comfortably secure an electronic device, such as a wristwatch or fitness/health tracking device, to a wrist of a user. The wristband can include a number of magnets that allow the wristband to be magnetically coupled to itself when folded over or when separate band portions are overlapping. The magnets can include a polymer mixed with a magnetic material to provide magnetic properties and flexibility. The magnets can be joined together by a continuous support structure that extends through opposing pairs of the magnets. The support structure can provide substantial and ability as well as tensile strength. The magnets and the support structure can be surrounded by a flexible cover to protect the components within.

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.

Watch or item of jewellery comprising a case or setting comprising main and secondary slots that enable the fixture of interchangeable removable wristbands comprising an end link with an end piece with studs arranged to cooperate in a complementary manner with these secondary slots, wherein this link comprises a lock with a slide catch arranged to cooperate in a complementary manner and with minimal play with the main slot in a locking position, towards which the slide catch is moved by elastic restoring means, wherein said lock comprises intrinsic unlocking means with a pushbutton operable by a user to move this slide catch away from the main slot and control an unlocking of the lock by retraction of the slide catch by an application of pressure to the pushbutton.

A clip-on strap assembly includes a watch strap with a groove and two mounting holes, a base disposed in the groove and including a midpoint connecting portion, two movable members movably on the base and located on opposite sides of the connecting portion, two snap hooks disposed on ends of the movable members, two elastic members disposed between the movable members and the connecting portion, and two pressing members disposed on the movable members and accommodated in the two mounting holes. The pressing members can bear against the elastic members. The snap hooks can engage with or be disengaged from the two buckles. The watch strap is clipped to or unclipped from the watch head merely by only pressing the two pressing members, facilitating the replacement of the watch strap.

A clip-on strap assembly includes a watch strap with a groove and two mounting holes, a base disposed in the groove and including a midpoint connecting portion, two movable members movably on the base and located on opposite sides of the connecting portion, two snap hooks disposed on ends of the movable members, two elastic members disposed between the movable members and the connecting portion, and two pressing members disposed on the movable members and accommodated in the two mounting holes. The pressing members can bear against the elastic members. The snap hooks can engage with or be disengaged from the two buckles. The watch strap is clipped to or unclipped from the watch head merely by only pressing the two pressing members, facilitating the replacement of the watch strap.

A band may include a first strap and a second strap. The first strap may include a first strap body, a first connection portion and a first mating portion. The first strap body may define a connection hole between the first connection portion and the first mating portion. The second strap may include a second strap body, a second connection portion, a second mating portion and a buckle. The second mating portion may be arranged between the second connection portion and the buckle. The buckle is configured to be inserted into the connection hole to connect the first strap body and the second strap body. The second mating portion may be configured to be attracted to and coupled with the first mating portion.