IWC Schaffhausen Big Pilot's Watch Perpetual Calendar ProSet

The IWC Schaffhausen Big Pilot's Watch Perpetual Calendar ProSet, reference IW329602, has an 18 ct 5N gold case measuring 42 mm across. The case is 14 mm thick, with a lug width of 21 mm. Water resistance is rated to 100 metres. An automatic, self-winding movement, calibre 82665, drives the watch and runs for 60 hours on a full wind. The green sunray dial sits under a convex sapphire crystal with antireflective coating on both sides, and a sapphire caseback allows a view of the movement. The perpetual calendar shows date, day, month and year, paired with a moon phase display and a central seconds function. The case has a screw-down crown. A green buffalo leather strap accompanies this reference.