Patek Philippe debuts new perpetual calendar chronograph in Milan

Patek Philippe has unveiled the Reference 5978P-010, a new timepiece that combines the brand’s manually wound chronograph movement with an instantaneous perpetual calendar. The model made its debut at the seventh biennial Watch Art Grand Exhibition held in Milan.

The watch is powered by the new calibre CH 29-535 PS QI, a hand-wound movement composed of 500 parts. Unlike progressive calendars that advance slowly, this instantaneous mechanism allows the day, date, month, leap year, and day/night indicators to snap into their new positions simultaneously in approximately 30 milliseconds. The 30-minute counter of the chronograph also features this instantaneous movement.

Housed in a platinum case, the Reference 5978P-010 is a limited edition of 120 pieces. It features a navy-blue sunburst dial with a textured center, red-varnished chronograph hands, and calendar indications printed in Italian. The retail price is approximately $337,585.