A new self-winding perpetual calendar has been added to the Patek Philippe collection. It comes in a Calatrava case with beautifully scalloped lugs and applied Breguet numerals. The yellow- and rosegold models feature ivory lacquered dials with recessed counters. The white-gold version has a blue sunburst dial. The watches come with a sapphire crystal case back and an interchangeable solid-gold back.

Ivory lacquered, gold applied Breguet numerals. Rose gold. Case diameter: 39 mm. Height: 9.71 mm. Water-resistant to 30 m. Interchangeable solid and sapphire crystal case backs. Fold-over clasp. Alligator strap with square scales, hand-stitched, shiny dark chestnut. Perpetual calendar. Day, date, month, leap year and 24-hour indication by hands. Moon phases.

Perpetual calendar. Day, date, month, leap year and 24-hour indication by hands. Moon phases. Diameter: 27.5 mm. Thickness: 3.88 mm. Number of parts: 275. Bridges: 8. Jewels: 27. Power reserve: min. 38 hours, max. 48 hours. 22K gold off-center mini-rotor. Balance: Gyromax^®. Vibrations/hour: 21 600 (3 Hz). Balance spring: Spiromax^®. Hallmark: Patek Philippe Seal. Patent: CH 595 653.