Watch case comprising a casing (10), a turning bezel (14-2) outside of said casing, said turning bezel comprising at least one portion of magnetic material (2), an organ (11) inside of said casing, placed so as to be able to be controlled by the magnetic field of said magnetic portion, said organ (11) comprising a concentric ring (4) to said turning bezel and equipped with at least one magnetic portion, so as to be able to be driven in rotation by the magnetic field of said organ during its rota...

A planisphere watch includes a watch case having a transparent lens. A time keeping mechanism is disposed within the case and has a time display viewable through the lens. A planisphere map of star constellations and star systems is viewable through the lens. A rotatable bezel overlies the lens and defines a window through which a portion of the planisphere is viewed. The bezel includes time indicia alignable with date indicia imprinted onto an underlying tension ring. Rotating the bezel to alig...

To provide a wrist watch having a small rim width while ensuring the strength of a glass rim. A movement with hands and a dial plate is assembled into a barrel from a side of a glass rim. A water-proof packing is arranged between a glass rim and the barrel. Machine screws are mounted inside the water-proof packing to fix the barrel and the glass rim together.

A watch case (M) including a caseband (1) and a back cover (4) which can be engaged with and clamped in the caseband by imparting a rotational movement to the back cover (4) through a predetermined angle (.OMEGA.) around an axis of closure (O--O'). The back cover (4) and the caseband (1) include wall portions (16, 24) of complementary undercut forms the peripheral profile of which comprises four sections (38, 48) in circular arc form each centered on a center (C.sub.c, C.sub.f) separated from th...

A reversible timepiece is provided having at least two opposite faces and at least one movement. The timepiece includes and is attached to a bi-laterally flexible watchband adapted to permit its wearer to reverse the timepiece and change from one face to the other without having to remove the timepiece from their wrist.

The invention concerns a method allowing an electronic watch to automatically exit an altimeter mode including the following steps: (a) entry into altimeter mode by activating the watch altimeter module; (b) using a pressure sensor of the watch to measure at least one first pressure value used to calculate a first altitude value; (c) using the pressure sensor to measure at least one second pressure value used to calculate a second altitude value; (d) comparing the difference between said first a...

The invention relates to a watch case comprising a case middle (16), a bezel (18) mounted so that it can turn on the middle and defining between them an annular chamber (36) and a gap (40) open towards the outside of the case, a glass (22) mounted in sealed fashion on the bezel, a seal (42) inserted between the bezel and the middle and arranged in said chamber (36). According to the invention said seal comprises a ring (44) of annular shape made of a material of the highly elastically deformable...

The oscillating mass is integral with a toothed wheel which is engaged with pinions at the periphery of a plate. Many rotors at the periphery of the plate are located between sections of a peripheral, annular stator. The sections of the stator comprise cores and coils. It is thus possible with a simple construction of small thickness to obtain sufficient efficiency and power of the generator without considerable multiplication of the movement of the oscillating mass. The plate has a recess capab...

A carrier for watches is disclosed including a loop for engaging the clothing of a wearer and a hanger suspended by the loop. The hanger is dimensioned to support a watch inverted. In one embodiment, the hanger partially encloses and engages the outer surface of the watch case. In a second embodiment, the hanger engages a pin on the six o'clock position pin openings of a wrist watch (with strap removed). In another embodiment, the hanger encloses the watch in a clamshell like fashion. In still a...

A personal security alarm is combined with a wristwatch to be readily accessible on a user's wrist in an emergency situation. An exposed activation button has a large surface to be easily activated by a person's finger or face; a reset button is hidden on the underside of the device to require removal of a buckle fastener before resetting can be done.