IWC Big Pilot's Watch Perpetual Calendar | Blue Dial | Blue Leather Strap | IW503605

From IWC, the Big Pilot’s Watch Perpetual Calendar in stainless steel with a blue dial continues the long-standing tradition of perpetual calendar watches in the Big Pilot’s collection. No other complication has taken center stage on the dial of the Big Pilot’s Watch more often than the perpetual calendar. Developed during the 1980s by IWC’s former head-watchmaker Kurt Klaus, the large dial not only lends itself well to the mechanism’s many display, but it also makes reading of the calendar information particularly easy. The Big Pilot's Watch Perpetual Calendar features a stainless steel case, a blue dial, rhodium-plated hands and a blue calfskin strap. The perpetual calendar automatically recognizes the different month lengths and the leap years, and will not require a manual adjustment until 2100. Engineered from only about 80 individual parts, the calendar module is driven by a single nightly switching pulse from the IWC-manufactured 52615 caliber. Components of the Pellaton winding system that are subject to severe stresses are made of virtually wear-free ceramic. When fully wound, the two barrels store a power reserve of seven days. The elaborately decorated manufacture movement is visible through the sapphire glass back.

Case:

Stainless steel case

Diameter 46.2 mm

Height 15.4 mm

Screw in crown

See-through sapphire glass back

Water resistance 6 bar

Movement:

52615 Caliber

Automatic, self-winding

168 hours Power Reserve

Frequency 28800.0 vph (4.0 hz)

381 Components

54 Jewels

Features:

Perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase for the northern and southern hemisphere

7 days power reserve

Power reserve display

Glass secured against displacement by drop in air pressure

Sapphire glass, convex, antireflective coating on both sides

Rotor with 18-carat gold medallion

Small hacking seconds

IWC Style #: IW503605...