An assembly (1) for measuring a relative humidity level inside a watch (2), comprising the watch (2) and a device (4) for determining the humidity level present in the enclosure (9) of a case (3) of this watch (2), the determination device (4) comprising a free space optical system and a control unit (7). The system includes: an emitter module (5) for emitting at least one light beam (8); and a receiver module (6) for receiving the at least one light beam (8); the control unit (7) being connected to the modules (5, 6) and the at least one light beam (8) emitted by the emitter module (5) defining an optical path partly comprised in the case (3) and extending as far as the receiver module (6) and the control unit (7) being configured to evaluate the absorption of the light beam (8) by the water vapour capable of being present inside the enclosure (9) of the case (3).

An electronic timepiece includes: a 6 o'clock information display unit that displays one display mode among a plurality of display modes including a barometric display mode in which a barometric pressure is displayed, using a first display hand; a 10 o'clock information display unit that displays a change in the barometric pressure using a second hand in a case in which the display mode displayed by the 6 o'clock information display unit is the barometric display mode; a 2 o'clock information display unit that displays the barometric pressure using measurement display hands in the case in which the display mode displayed by the 6 o'clock information display unit is the barometric display mode; and a time display unit that displays a time using an hour hand and a minute hand irrespective of the display mode.

An electronic timepiece includes: a 6 o'clock information display unit that displays one display mode among a plurality of display modes including a barometric display mode in which a barometric pressure is displayed, using a first display hand; a 10 o'clock information display unit that displays a change in the barometric pressure using a second hand in a case in which the display mode displayed by the 6 o'clock information display unit is the barometric display mode; a 2 o'clock information display unit that displays the barometric pressure using measurement display hands in the case in which the display mode displayed by the 6 o'clock information display unit is the barometric display mode; and a time display unit that displays a time using an hour hand and a minute hand irrespective of the display mode.

A watch (10) including a case provided with a back, with a crystal (12), with a set of components forming a horological movement (13), and with a dial (14) disposed between the movement and the crystal (12), the dial (14) including a photovoltaic cell module (16) connected to an electric accumulator (17) intended to provide an electrical energy source to the watch (10), the dial (14) further including a shutter device (18) arranged between the photovoltaic cell module (16) and the crystal (12) of the watch (10), and configured to occupy a shutter state wherein it masks the entire photovoltaic cell module (16) and an exposure state wherein it exposes all or part of the photovoltaic cell module (16).

A watch (10) including a case provided with a back, with a crystal (12), with a set of components forming a horological movement (13), and with a dial (14) disposed between the movement and the crystal (12), the dial (14) including a photovoltaic cell module (16) connected to an electric accumulator (17) intended to provide an electrical energy source to the watch (10), the dial (14) further including a shutter device (18) arranged between the photovoltaic cell module (16) and the crystal (12) of the watch (10), and configured to occupy a shutter state wherein it masks the entire photovoltaic cell module (16) and an exposure state wherein it exposes all or part of the photovoltaic cell module (16).

A timepiece includes a display unit including a first indicating hand and a dial so as to display a time, in which the dial has a first scale having a number for showing an absolute value of a positive numerical value within a plurality of numerical values indicated by the first indicating hand, a second scale having a number for showing an absolute value of a negative numerical value within the plurality of numerical values, a first sign for showing that the numerical value indicated by the first indicating hand is positive, and a second sign for showing that the indicated numerical value is negative.

Shock indicator device for a watch, internal to the watch, including a structure, to which is fixed an inertia block by means of at least one connecting element made of elastic or ductile or breakable material, which is elastically and plastically deformable when movements are imparted to the inertia block, this inertia block being movable in proximity to a fixed opposing surface comprised in the structure itself or in another element of a watch case, and arranged to come into contact with this opposing surface, to impart a proof indicator of impact or a permanent deformation or damage to the inertia block and/or to the connecting element and/or to the opposing surface, and/or to a breakable element incorporated in the shock indicator device), when the acceleration imparted to this inertia block is higher than a given acceleration threshold.

Shock indicator device for a watch, internal to the watch, including a structure, to which is fixed an inertia block by means of at least one connecting element made of elastic or ductile or breakable material, which is elastically and plastically deformable when movements are imparted to the inertia block, this inertia block being movable in proximity to a fixed opposing surface comprised in the structure itself or in another element of a watch case, and arranged to come into contact with this opposing surface, to impart a proof indicator of impact or a permanent deformation or damage to the inertia block and/or to the connecting element and/or to the opposing surface, and/or to a breakable element incorporated in the shock indicator device), when the acceleration imparted to this inertia block is higher than a given acceleration threshold.

A watch includes a pointer that rotates and indicates a time, a notifier that performs a notification operation to a user in a mode other than a visual mode, and a processor that controls the rotation of the pointer and the notification operation of the notifier. The processor is configured to control the pointer to cause the pointer to rotate faster than a rotation corresponding to a passage of time and move to a specified position and, when the pointer arrives at a notification position while the pointer is moving fast, control the notifier to cause the notifier to perform the notification operation.

A watch includes a pointer that rotates and indicates a time, a notifier that performs a notification operation to a user in a mode other than a visual mode, and a processor that controls the rotation of the pointer and the notification operation of the notifier. The processor is configured to control the pointer to cause the pointer to rotate faster than a rotation corresponding to a passage of time and move to a specified position and, when the pointer arrives at a notification position while the pointer is moving fast, control the notifier to cause the notifier to perform the notification operation.