Patek Philippe launches a new Calatrava with instantaneous day-date displays and an eight-day power reserve. The new manually wound 31-505 8J PS IRM CI J caliber combines a classic construction with several technical innovations, including a Pulsomax^® escapement in Silinvar^®. The two series-coupled barrels guarantee perfectly accurate operation for a full eight days, with a ninth “reserve” day displayed in red on the indicator. The day-date displays jump instantaneously at midnight. The entire circumference of the white gold caseband is adorned with Patek Philippe's emblematic hobnail pattern.

Watch

Manually wound mechanical movement. Caliber 31‑505 8J PS IRM CI J. Instantaneous date by hand. Instantaneous day in an aperture. Power reserve indication. Small seconds.

Dial

Textured blue with black-gradient rim, white gold applied numerals with white luminescent coating.

Case

White gold. Caseband guilloched with hobnail pattern. Diameter: 41 mm. Thickness: 10.52 mm. Water resistant to 30 m. Sapphire crystal case back.

Strap

Calfskin, fabric pattern, navy blue (originally fitted). Calfskin, grained, taupe (additional strap). White gold patented triple-blade fold-over clasp.