Patek Philippe 5159J - Grand Complications
In order to accommodate months with 31, 30 and 28 days, and february 29 in leap years, a movement must have a mechanical “memory” of four years – or 1,461 days. This function requires a highly sophisticated mechanism, based on a complex system of levers and cams pivoting around their axes. This is a domain in which Patek Philippe has repeatedly leveraged its long-standing competence.
Ultra-thin mechanical self-winding movement. Caliber 240 Q. Day, date, month, leap year and 24-hour indication by hands.
Royal blue sunburst, gold applied Breguet numerals.
White gold. Interchangeable full back and sapphire-crystal case back. Water resistant to 30 m. Case diameter: 39 mm. Height: 9.71 mm.