Abstract: Watch glass (1) including a first element (2) made of a first material and a second element (3) made of a second material different from the first, more elastic than the first material, the second element (3) includes a skirt (3b) in its lower part, and the two elements (2, 3) are fixed to each other so that the first element (2) is oriented toward the exterior of a watch and the skirt of the second element (3) is adapted for the assembly of the watch glass (1) to a watch middle (4).

Abstract: Watch glass (1) including a first element (2) made of a first material and a second element (3) made of a second material different from the first, more elastic than the first material, the second element (3) includes a skirt (3b) in its lower part, and the two elements (2, 3) are fixed to each other so that the first element (2) is oriented toward the exterior of a watch and the skirt of the second element (3) is adapted for the assembly of the watch glass (1) to a watch middle (4).

Abstract: A device for driving a date mobile (3) of a horological calendar mechanism, the device comprising: a driving mobile (2) including a first finger (20a) and a second finger (20b); a programming mobile (1) including a first set of teeth (10a), a second set of teeth (10b) and a third set of teeth (10c); and the date mobile (3) including a fourth set of teeth (30a) and a fifth set of teeth (30b), the first finger cooperating with the first set of teeth, the second finger cooperating with the second set of teeth, the first set of teeth cooperating with the fourth set of teeth and the third set of teeth cooperating with the fifth set of teeth.

Abstract: A device for driving a date mobile (3) of a horological calendar mechanism, the device comprising: a driving mobile (2) including a first finger (20a) and a second finger (20b); a programming mobile (1) including a first set of teeth (10a), a second set of teeth (10b) and a third set of teeth (10c); and the date mobile (3) including a fourth set of teeth (30a) and a fifth set of teeth (30b), the first finger cooperating with the first set of teeth, the second finger cooperating with the second set of teeth, the first set of teeth cooperating with the fourth set of teeth and the third set of teeth cooperating with the fifth set of teeth.

Abstract: This annual date mechanism comprises a correction cam (1a) in kinematic connection with a date indicating runner (1), a correction rocker (8) engaged on the one hand with said correction cam (1a) and, on the other hand, with an annual cam (18). A spring (9) presses the correction rocker (8) against the cams (1a, 18). The correction cam (1a) comprises a portion (1a′) for arming said spring (9), followed by a portion (1a*) sized to cause said date runner (1) to move by one step between “31” and “1”, under the pressure of said spring (9).

Abstract: This annual date mechanism comprises a correction cam (1a) in kinematic connection with a date indicating runner (1), a correction rocker (8) engaged on the one hand with said correction cam (1a) and, on the other hand, with an annual cam (18). A spring (9) presses the correction rocker (8) against the cams (1a, 18). The correction cam (1a) comprises a portion (1a′) for arming said spring (9), followed by a portion (1a*) sized to cause said date runner (1) to move by one step between “31” and “1”, under the pressure of said spring (9).