Wristwatch with a reversible case

A wristwatch including a support attached to a wristband and a case comprising two faces, a clockwork movement and display means, the case being mounted on the support so as to be able to slide and turn over to show respectively one or other of its faces in two operating positions, the watch including means for holding the case in its two operating positions, the support comprising a bottom and two parallel inner surfaces each including a longitudinal groove having closed ends, the case including, facing said inner surfaces, two parallel lateral walls each having a snug able to slide in a corresponding one of said grooves of the support, each of said grooves including at least one stop, disposed at a distance from its ends, the effect of each said stop being to define a stop zone for the corresponding snug, after a first sliding travel of said snug from one end of the groove, to let said case pivot about said snug to turn over said case, before said snug performs a second sliding travel to the other end of the groove, the watch further including means for preventing the case from pivoting while the snugs are situated anywhere alone said grooves except in the stop zones, each said stop zone thus defining a case pivoting zone.