In 1884, the International Meridian Conference in Washington, D.C. established the system of standard time and the division of the globe into 24 time zones. And ever since, Patek Philippe’s engineers and watchmakers have been using their ingenuity to produce watches with multiple time zones that are both highly legible and easy to use.

Blue varnished, gold applied numerals with luminescent coating. White gold. Diameter: 42 mm. Height: 10.78 mm. Water-resistant to 60 m. Sapphire crystal case back. Calf leather strap, Vintage brown. Clevis prong buckle. Calatrava Pilot Travel Time. Dual time zone mechanism indicating local and home time. Local and home day/night indication in apertures. Local date by hand. Sweep seconds hand.

Diameter: 31 mm. Thickness: 4.82 mm. Number of parts: 290. Jewels: 29. Power reserve: Min. 35 hours - max. 45 hours. Winding rotor: 21K gold central rotor. Balance: Gyromax^®. Vibrations/hour: 28 800 (4 Hz). Balance spring: Spiromax^®. Hallmark: Patek Philippe Seal.