Abstract: The invention concerns a push-piece control device for a watch comprising a case (10) provided with a middle (12), an arbor (16) integral with a crown (20) and mounted pivoting in the middle (12) and a push-piece (18) mounted sliding and coaxial to the arbor (16). The invention is characterized in that it further comprises a lever (32) mounted pivoting on said case (10) by one of its ends (32a), mobile in a plane substantially parallel to the watch plane, including, in its median part (32b), a contact point designed to co-operate with said push-piece (18) and, at its other end (32c), a concave control portion.

Abstract: The invention concerns a watch equipped with means for determining a location longitude and a device for determining the sun's altitude above the horizon. Said watch comprises a mobile element (16) doing one full rotation in 12 hours and bearing a hour hand (24), and a dial (32). It comprises for this purpose a rotating ring (44) for reading longitude, bearing an index mark (47) and, therefrom, a scale (45) in degrees, extending from 0° to 90° on either side of the index mark and covering the ring (44) over its whole periphery. Moreover, the dial (32) is provided with a circular scale (33) for selecting a time zone, with a median point (35) corresponding to the dial top point and a graduation from 0 to +6 hours or ?6 hours depending on the rotational direction.

Abstract: The invention concerns a push-piece control device for a watch comprising a case (10) provided with a middle (12), an arbor (16) integral with a crown (20) and mounted pivoting in the middle (12) and a push-piece (18) mounted sliding and coaxial to the arbor (16). The invention is characterised in that it further comprises a lever (32) mounted pivoting on said case (10) by one of its ends (32a), mobile in a plane substantially parallel to the watch plane, including, in its median part (32b), a contact point designed to co-operate with said push-piece (18) and, at its other end (32c), a concave control portion.