Following the GPHG (Grand Prix d’Horlogerie de Genève) award for the best Calendar Prize,
Greubel Forsey presents its QP à Équation in a 5N red gold millesime with a chocolate coloured gold dial. By reinventing the prestigious perpetual Calendar (QP), with the QP à Équation, Greubel Forsey demonstrates through their art of invention that the history of mechanical watchmaking remains in a perpetual state of evolution.