The series Richeville of Girard-Perregaux is characterized by the tonneau form of the case. The model Richeville Jour-Nuit attracts attention by its unusual display features. It features a 24-hours ring, which rotates counter-clockwise. It replaces the conventional hours hand. An arrow above the brand logo indicates the hour. The 24-hour ring also differs between day and night.

At first one might think one would have to do with a worldtimer, until one discovers that it is a great and sophisticated kind of hours display. In a market that already seems to know everything, this makes the watch a real specialty. It is optionally available in a case of stainless steel or in 18ct rose gold.