Jumper device (80) for a timepiece device (100) including at least one first arm (81) including a first beak (81a) for positioning a first mobile unit (10), at least one second arm (82) including a second beak (82a) for positioning a second mobile unit (20), an elastic element (84) for returning the first arm and the second arm to configurations positioning the first and second mobile units, and a lever (83; 83′) interfaced between, on the one hand, the elastic return element, and on the other hand, the first and second arms.

Jumper device (80) for a timepiece device (100) including at least one first arm (81) including a first beak (81a) for positioning a first mobile unit (10), at least one second arm (82) including a second beak (82a) for positioning a second mobile unit (20), an elastic element (84) for returning the first arm and the second arm to configurations positioning the first and second mobile units, and a lever (83; 83′) interfaced between, on the one hand, the elastic return element, and on the other hand, the first and second arms.

A device (10) for fastening an external or display element (20) onto a horological structure (100), including a retaining key (1) including a post (2) fastened to the structure (100) and a head (9) with a truncated flange (3) having a first lip (31) cooperating by bearing, in a blocking manner, with a face (41) of a fastening element (4) integral with this display element (20), which first lip (31) is delimited by non-coplanar edges (51, 52), this retaining key (1) includes, joined to each edge (51, 52) and radially retracted relative to the periphery (30) of the first lip (31), a second lip (6) having an upper surface (68) which is, at each edge (51, 52), tapered relative to the upper surface (38) of the first lip (31).

A device (10) for fastening an external or display element (20) onto a horological structure (100), including a retaining key (1) including a post (2) fastened to the structure (100) and a head (9) with a truncated flange (3) having a first lip (31) cooperating by bearing, in a blocking manner, with a face (41) of a fastening element (4) integral with this display element (20), which first lip (31) is delimited by non-coplanar edges (51, 52), this retaining key (1) includes, joined to each edge (51, 52) and radially retracted relative to the periphery (30) of the first lip (31), a second lip (6) having an upper surface (68) which is, at each edge (51, 52), tapered relative to the upper surface (38) of the first lip (31).

A light-emitting clock has a case, a dial, a light-emitting mechanism, a movement and a plurality of hands. The case has a front cover, a back cover and a washer. The front cover is coupled to the back cover. The washer is disposed between the front cover and the back cover. The dial is disposed between the washer and the back cover. The light-emitting mechanism has a switch, a power unit electrically connected to the switch, and at least one lamp strip electrically connected to the switch. The switch and the power unit are disposed on the back cover. The lamp strip is annularly disposed at the washer. A light-emitting surface of the lamp strip at least faces the rim of the dial. The movement is disposed on the back cover. The hands are coupled to the movement and correspond in position to one side of the dial.

A light-emitting clock has a case, a dial, a light-emitting mechanism, a movement and a plurality of hands. The case has a front cover, a back cover and a washer. The front cover is coupled to the back cover. The washer is disposed between the front cover and the back cover. The dial is disposed between the washer and the back cover. The light-emitting mechanism has a switch, a power unit electrically connected to the switch, and at least one lamp strip electrically connected to the switch. The switch and the power unit are disposed on the back cover. The lamp strip is annularly disposed at the washer. A light-emitting surface of the lamp strip at least faces the rim of the dial. The movement is disposed on the back cover. The hands are coupled to the movement and correspond in position to one side of the dial.

A method of fabrication of a black watch dial, comprising the following steps: providing a substrate (1); deposition of a black coating (2) on said substrate,
wherein said coating (2) comprises carbon nanotubes (21).

A method of fabrication of a black watch dial, comprising the following steps: providing a substrate (1); deposition of a black coating (2) on said substrate,
wherein said coating (2) comprises carbon nanotubes (21).

A watch includes a watch body, a watch face attached to the watch body and having an opening, and a pointer. The pointer includes an extension portion disposed to sandwich the watch face between the extension portion and the watch body and extending from the opening to face an upper surface of the watch face, and a support portion protruding from the watch body into the upper surface of the watch face via the opening, and connected directly to the extension portion. The pointer includes a change portion formed in the extension portion to change a posture of the extension portion such that a front end of the extension portion is raised with respect to a base end of the extension portion to be apart from the watch face. The watch face is removed from the watch body along the extension portion raised by the change portion.

A watch includes a watch body, a watch face attached to the watch body and having an opening, and a pointer. The pointer includes an extension portion disposed to sandwich the watch face between the extension portion and the watch body and extending from the opening to face an upper surface of the watch face, and a support portion protruding from the watch body into the upper surface of the watch face via the opening, and connected directly to the extension portion. The pointer includes a change portion formed in the extension portion to change a posture of the extension portion such that a front end of the extension portion is raised with respect to a base end of the extension portion to be apart from the watch face. The watch face is removed from the watch body along the extension portion raised by the change portion.