Patek Philippe Grand Complications 6159

Patek Philippe's Grand Complications 6159G-001 is a 39.5 mm white gold perpetual calendar with a retrograde date hand. The case measures 11.49 mm thick and the sapphire crystal caseback reveals the movement within. Self-winding calibre 26-330 S QR drives the watch, offering 35 hours of power reserve along with day, month, leap year and moon phase indications. The black dial has a guilloché finish, and the dauphine hands and baton-style indices carry luminous coating for legibility. Beyond the perpetual calendar, the sweep central seconds and date complete a dense but orderly display. A black rubber strap closes on a white gold folding clasp. Water resistance is rated to 30 metres.