Patek Philippe is adding a brand-new perpetual calendar with an original in-line display to its rich range of calendar watches. The day, date and month appear in a large single aperture at 12 o'clock. So as to combine originality, legibility and reliability, the watch design engineers have developed the new self-winding movement 31-260 PS QL with an additional in-line display module, for which three patent applications have been filed. This highly sophisticated new caliber is housed in an elegant platinum case framing a vertical satin-finished blue dial with a black-gradient rim.

WATCH
Self-winding mechanical movement. Caliber 31‑260 PS QL. In-line perpetual calendar. Day, date, month, leap year and day/night indication in apertures. Small seconds.
DIAL
Blue, black-gradient, vertical satin finish, gold applied hour markers.
CASE
Platinum. Interchangeable solid and sapphire crystal case backs. Water-resistant to 30m. Diameter: 41.3mm. Height: 11.07mm.
BRACELET / STRAP
Alligator leather with square scales, hand-stitched, shiny navy blue. Fold-over clasp.