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
• Moon phases
• Small seconds

Dial

• Blue, black-gradient, vertical satin finish, gold applied hour markers

Case

• Platinum
• Diameter : 41,3mm
• Height : 11,07mm
• Water-resistant to 30 m
• Interchangeable solid and sapphire crystal case backs

Strap

• Alligator leather with square scales, hand-stitched, shiny navy blue
• Platinum fold-over clasp