Abstract: The invention relates to a chronograph watch with a display with a first retrograde hand for indicating the tenths of a second of the chronograph and a second retrograde hand for displaying the hundredths of a second of the chronograph. The hours, minutes and seconds are displayed by corresponding hands at the centre of the dial.

Abstract: Watch case comprising an unfolding clasp for a flexible strap, said unfolding clasp comprising: a middle (1) connected to a first end of the strap, a base (3) connected to the second end of the strap, an extension (2), connected in articulated fashion to the middle (1) and to the base (3), wherein the articulations (20, 21) between the middle (1) and the extension (2) and between the base (3) and the extension (2) are arranged in such a manner as to allow the middle, the extension and the base to superimpose in folded position, and to be juxtaposed in unfolded position, a regulating cam (34) for holding by compression and/or friction the strap against the base, the cam being capable of being swung to increase or reduce in a reversible manner the length of in folded position of the strap.

Abstract: Reversible watch, comprising a case (1) provided with a first face (10) for displaying first time indications and a second face (11) opposite said first face. A turning-over mechanism (20, 21, 22, 23) allows the case (1) to be turned over around a turning-over axis (201-211; 221-231) parallel to the 6 o'clock-12 o'clock axis so as to display at the wearer's preference either the first face or the second face. The turning-over mechanism comprising a pivoting arm (20, 21; 22, 23) on each side of the case that allows the turning-over axis to be moved back. The case (1) is connected with the arms (20, 21; 22, 23) to be able to pivot around the turning-over axis (201-211; 221-231). The length of the arms is sufficient for turning over the case without the winding button or other buttons coming into contact with other parts (17) of the watch.

Abstract: Clockwork movement for a wristwatch, comprising a kinematic chain including at least one belt (20, 21) for transmitting the movements and/or couples between at least two pulleys. The pulleys are held on the bottom plate or the bridges by ball bearings (151, 161, 171, 181). The movement is rewound by means of linear oscillating mass (14) charging four barrels (15, 16, 17, 18) through a couple distributor (40). The barrels are non-parallel to one another. The back cover is covered by inclined glasses (110, 120, 130) allowing the barrels, the linear oscillating mass and at least certain pulleys to be seen. The regulating organ (51) is removable.

Abstract: A device comprises a basic clock movement MB whose time indicators are driven by a first barrel connected to a first wheelwork and a first regulator organ, and an autonomous chronograph module MCA whose indicators are driven by a second barrel independent from the first, connected to a second wheelwork and a second regulator organ. The chronograph module is exclusively composed of mechanical elements. The frequency of oscillation supplied by its regulator is equal N times the frequency of oscillation supplied by the regulator of the base movement, with the coefficient N being definable according to a specific application of the chronograph, so that any chronograph module thus previously defined can work with-the same base movement. The chronograph regulator remains constantly engaged with the corresponding wheelwork. The chronograph module allows a time interval to be read with a minimum precision of a hundredth of second.

Abstract: 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 rotation, and wherein said organ is of the analogue type and can take an infinite number of distinct positions according to the angular position of the turning bezel.

Abstract: Bracelet comprising a plurality of rows of links, each row of links comprising at least two links traversed by a rod engaged in at least one link of the next row, so as to join both rows in an articulate manner. The rod is constituted of a pin and a head screwed in an opening tapped in the pin. The next row of links can be disassembled by removing first the left link, by unscrewing the head, then by removing the right link with the pin.

Abstract: Unfolding clasp (1) for a bracelet (4), comprising two lateral, articulated plates (10) with a central plate (11) so as to be able to ensure the opening of the bracelet. The plates (10, 11) are made of a flexible material able to adopt the shape of the wrist of the wearer of the bracelet. The deformation of the plates caused by a force applied perpendicular to the plane (x, z) containing the plates is greater than the deformation of the plates caused by an identical force applied in any other direction. The plates are made of a composite material, for example including a metallic reinforcement (100, 110) covered by a flexible material (101, 111) such as caoutchouc, plastic or leather.

Abstract: The watchband includes, for example, three rows of metallic links. The links of the first central row (1, 1', etc.) are shifted with respect to the links of the two other rows (2, 2', etc.). Each link of the central row (1') can pivot with respect to the preceding link (1) and with respect to the following link (1") about pins (3) connected to the links of lateral rows. Stop elements, for example other pins (4, 4') likewise connected to the links of lateral rows, allow limitation of the pivot angle of the central links about the first pins (3). The links can be removed to adjust the length of the band. Advantages: ergonomics, avoidance of the risk of pinching skin or hair, aesthetics, reduction of the wear and tear of the surface of the links, control of the curvature of the band and of the interstices between successive links.