The Nautilus with perpetual calendar Ref. 5740/1, the first major complication in the Nautilus collection.

The 40mm white gold case with a Blue Soleil dial is water resistant up to 60 meters. Thanks to the presence of the famous ultra-thin 240 Q self-winding caliber it maintains an extraordinarily reduced thickness, becoming the flattest perpetual calendar in the Patek Philippe collections. The white gold bracelet is equipped with a new Nautilus folding claps which offers optimized security.