Patek Philippe Grand Complications 5978P-010 Chronograph Instantaneous Perpetual Calendar Milano 2026 Platinum Blue Dial Limited Edition of 120 (2026)

The 5978P is the first Grand Complications watch to pair Patek Philippe's manually wound chronograph with an instantaneous perpetual calendar, and it required a new movement of 500 components to do it. It was introduced at the WATCH ART Grand Exhibition in Milan in 2026 and is limited to 120 pieces. Every calendar indication jumps at midnight at once rather than drifting forward, a refinement the house reserves for very few of its watches.

The Platinum case measures 42 mm. The dial is sunburst navy blue with a black gradient rim and a textured centre, with faceted white gold baton markers and dauphine hands. Day, date, month, leap year and day/night appear in apertures, with moon phases, small seconds and an instantaneous 30-minute counter. A navy composite strap with a fabric pattern and a platinum fold-over clasp give a sportier look than the complication suggests.