A device is provided for assembling a casing ring in a watch case middle including a bearing surface on an inner wall thereof, the casing ring including a housing opening in a lateral face of the casing ring, and in an upper or lower face of the casing ring. The device includes a locking part pivotable about a vertical axis of rotation passing through the upper or lower opening from a first position, in which the locking part is housed in the housing, to a second position, in which the locking part protrudes and abuts against the bearing surface of the inner wall of the case middle so as to hold the casing ring in the case middle. The locking part is snap-fitted in the housing and is pivotable about the vertical axis of rotation. A timepiece and a watch case fitted with the assembly device are also provided.

A device is provided for assembling a casing ring in a watch case middle including a bearing surface on an inner wall thereof, the casing ring including a housing opening in a lateral face of the casing ring, and in an upper or lower face of the casing ring. The device includes a locking part pivotable about a vertical axis of rotation passing through the upper or lower opening from a first position, in which the locking part is housed in the housing, to a second position, in which the locking part protrudes and abuts against the bearing surface of the inner wall of the case middle so as to hold the casing ring in the case middle. The locking part is snap-fitted in the housing and is pivotable about the vertical axis of rotation. A timepiece and a watch case fitted with the assembly device are also provided.

A wearable device made by amorphous alloy with antibacterial function includes a functional part adapted for implementing using functions of the wearable device; and an amorphous alloy housing configured out of the functional part and adapted for cladding the functional part to prevent the functional part from directly contacting with a user. Since the wearable device has the amorphous alloy housing covering on the functional part, thus the amorphous alloy housing rather than the functional part will contact with the user skin directly. As the amorphous alloy has excellent bactericidal capability, thus user wearing such a wearable device will get a good user experience.

A wearable device made by amorphous alloy with antibacterial function includes a functional part adapted for implementing using functions of the wearable device; and an amorphous alloy housing configured out of the functional part and adapted for cladding the functional part to prevent the functional part from directly contacting with a user. Since the wearable device has the amorphous alloy housing covering on the functional part, thus the amorphous alloy housing rather than the functional part will contact with the user skin directly. As the amorphous alloy has excellent bactericidal capability, thus user wearing such a wearable device will get a good user experience.

One example cap assembly includes a printed circuit board (PCB) having first and second electrical contacts; a switch coupled to the PCB at the first electrical contact, the switch comprising a switching member comprising: a coupling feature coupling a first end of the switching member to the PCB at the first electrical contact; a first portion extending adjacent to the first side of the PCB from the coupling feature; a second portion extending through an opening through the PCB; and a third portion extending adjacent to the second side of the PCB; a second electrical contact formed on the second side of the PCB; wherein: the third portion of the switching member contacts the second electrical contact in a rest position, the third portion biased towards the rest position; and deflection of the first portion towards the PCB causes the third portion to break contact with the second electrical contact.

One example cap assembly includes a printed circuit board (PCB) having first and second electrical contacts; a switch coupled to the PCB at the first electrical contact, the switch comprising a switching member comprising: a coupling feature coupling a first end of the switching member to the PCB at the first electrical contact; a first portion extending adjacent to the first side of the PCB from the coupling feature; a second portion extending through an opening through the PCB; and a third portion extending adjacent to the second side of the PCB; a second electrical contact formed on the second side of the PCB; wherein: the third portion of the switching member contacts the second electrical contact in a rest position, the third portion biased towards the rest position; and deflection of the first portion towards the PCB causes the third portion to break contact with the second electrical contact.

A watch intended to be removably mounted on a support, including a watch case and an independent removable attachment device arranged to retain the watch case in an opening provided in the support, the watch case including an upper portion, on the dial side, and a lower portion including a back cover, the lower portion being arranged to be housed inside the opening in the support and being of smaller dimensions than those of the upper portion to form a flat peripheral shoulder. The attachment device includes a flange having a central opening arranged to receive the lower portion of the watch case and an inner rim delimiting the central opening, the inner rim being arranged to be housed inside the opening in the support. The inner rim includes a locking device for locking the attachment device on the lower portion of the watch case.

A watch intended to be removably mounted on a support, including a watch case and an independent removable attachment device arranged to retain the watch case in an opening provided in the support, the watch case including an upper portion, on the dial side, and a lower portion including a back cover, the lower portion being arranged to be housed inside the opening in the support and being of smaller dimensions than those of the upper portion to form a flat peripheral shoulder. The attachment device includes a flange having a central opening arranged to receive the lower portion of the watch case and an inner rim delimiting the central opening, the inner rim being arranged to be housed inside the opening in the support. The inner rim includes a locking device for locking the attachment device on the lower portion of the watch case.

A smart wristwatch structure includes a glass, a dial, a watch case, a bottom case, a movement, an antenna, a functional module, and a dedicated battery. The dial, the watch case, and the bottom case construct an accommodating space from top to bottom. The antenna is adhered to a lower surface of the glass. The functional module is disposed in the accommodating space for wirelessly communicating with a mobile terminal. The dedicated battery provides power for the functional module or the movement. In the smart wristwatch structure, signals are not shielded, and the thickness of the watch case is not increased significantly.

A smart wristwatch structure includes a glass, a dial, a watch case, a bottom case, a movement, an antenna, a functional module, and a dedicated battery. The dial, the watch case, and the bottom case construct an accommodating space from top to bottom. The antenna is adhered to a lower surface of the glass. The functional module is disposed in the accommodating space for wirelessly communicating with a mobile terminal. The dedicated battery provides power for the functional module or the movement. In the smart wristwatch structure, signals are not shielded, and the thickness of the watch case is not increased significantly.