A diving watch includes a first device for displaying the current time and a second device for analogically displaying a diving duration. The second device includes a hand dedicated to the indication of a diving duration and a rotating bezel provided with a visible face including a time scale including time graduations. The bezel cooperates with the dedicated hand, in particular continuously animated with a uniform rotational movement, by displaying an instant value of the diving duration.

Disclosed is a mechanical timepiece movement including a chronograph mechanism arranged to be capable of carrying out at least one countdown of a predetermined time interval, including a display arranged to display at least the time remaining until the end of the countdown of the predetermined time interval, at least one member for controlling the start of the countdown, and a striking-mechanism. The striking-mechanism is arranged to start striking at a specified time before the end of the countdown and to stop striking at the end of the countdown of the predetermined time interval.

A display mechanism (100) allowing display change with a single display mobile (150) so as to indicate a first piece of information with a first counter (110) and second piece of information with a second counter (120). This change is performed by the permutation of a clutch organ (130) displacing between a first position (131) and a second position (132) when the clutch organ (130) is controlled by a control organ (140).

A system (100) for displaying time or time derivative information, in particular a measured time, the system including a limb (10) comprising at least one modifiable graphic element (20a-f) forming time or time derivative reference information, a member (1) for indicating the time or time derivative information in cooperation with the limb, a device (2, 8, 22, 71) for modifying the graphic element, and a device (3, 4, 34) for resetting, by action of a user, to a predetermined configuration, in particular for resetting to zero, the time or time derivative information displayed by cooperation of the indication member and of the limb.

A timepiece with a double-sided display, including a first display member and a second display member coaxial to the first display member and integral therewith with a first common arbor. The centers of mass of the first display member and the second display member are, in projection on a plane perpendicular to their common axis. The first display member and/or the second display member is arranged to display a visual animation, and is movable above a back, and, either above a mask partially and incompletely covering the back.

A method for operating a counting device (90), such as a countdown device, or a timepiece movement (100) or a timepiece (200), the method including performing a first action on a first control member (C1) causing a first timepiece function to be returned to an initial state, and then performing a second action on the first control member (C1) causing an action of adjusting or winding a second timepiece function.

The present invention relates to a timepiece comprising a watch movement including a complication of the chronograph or countdown type, a fixed body (10) and a display (20) with moiré effect for displaying a time information associated with the chronograph or the countdown. The display comprises a mobile disc (22) with an indicator (24) of the time information. The mobile disc (22) is, on the one hand, connected to an axis (23) in engagement with the watch movement and, on the other hand, arranged to rotate above or below the fixed body (10). One of the mobile disc (22) and the fixed body (10) comprises a plurality of apertures (26) arranged over 360°. The other of the mobile disc (22) and the fixed body (10) comprises a marking with a repetition of patterns including a first set of patterns having a first visual appearance (27) and a second set of patterns having a second visual appearance (28). The patterns having the first visual appearance are arranged alternately with the patterns having the second visual appearance over 360°. The plurality of apertures (26) are separated from each other by a plurality of portions (30) intended to progressively mask the patterns of the marking in order to produce the moiré effect when the mobile disc (22) is rotated.

A watch including a case (6) having a push-piece (8), movable in a radial direction, and a device (14) for locking the push-piece. The locking device includes a locking member (16) rotatably mounted about a central axis of the case and arranged to be actuated between a locking position, wherein the push-piece is stopped or blocked by the locking device so that the function cannot be activated by actuation of the control member, and an unlocking position wherein the push-piece is released and can then be actuated in said radial direction to allow the function to be activated. A rotating bezel (20) and the locking member are coaxial arranged so that they can each be rotatably actuated by the user independently of each other. Thus, the rotating bezel is independent of the locking function and can thus be dedicated to the chronograph mechanism and be in particular useful for diving.

A display mechanism a wheel carrying, constrained to rotate with it, a first wheel and a snail-shaped cam, the mechanism having an active first state in which the first wheel is driven in rotation by a driving wheel and a zero reset second state in which it is no longer driven to allow it to return to a predefined position, associated with a predefined position of the display member, the display mechanism further including a feeler-spindle adapted to cooperate with the perimeter of the cam, the feeler-spindle and the perimeter of the cam being adapted and sized so that the feeler-spindle exerts on the cam, in the second state, a return force having a non-radial component adapted to return the first wheel to its predefined position.

A timepiece with a double-sided display, including a structure including, on a first side, a first display member, and, on a second side, a second display member coaxial to the first display member and integral therewith with a first common arbor, the centres of mass of the first display member and the second display member are, in projection on a plane perpendicular to their common axis, aligned with the projection of the latter or coincident therewith, the first display member and/or the second display member is arranged to display a visual animation, and is movable above a back, and, either above a mask partially and incompletely covering the back, leaving a visible area contiguous with a hidden area wherein the back is invisible to the user, or between the back and the mask, moving above the visible area or the hidden area depending on its angular position with respect to the common axis.