IWC Big Pilot

In 1940 the German Luftwaffe issued a specification for an oversized aviator's wristwatch (Beobachtungsuhr, abbreviated B-Uhr) for navigators on long-distance bombers. IWC was one of five manufacturers selected, alongside A. Lange & Söhne, Wempe, Stowa, and Laco. IWC's response was the Ref. IW431, a 55mm pocket-watch-derived wristwatch with a hacking pocket-watch movement, cathedral hands, and a conical onion crown sized to be operated through a leather flight glove.

The 55mm case was extreme even by contemporary standards, the watches were strapped over flight jackets rather than worn directly on the wrist. The original B-Uhr Big Pilot remains the most-collectible vintage pilot watch reference; original WWII examples in working condition trade above CHF 80,000 today. IWC produced approximately 1,000 examples of the original Ref. IW431 across the war years.

The line was revived in 2002 as the Ref. 5002, a 46mm steel reinterpretation of the B-Uhr with the same conical onion crown, cathedral hands, large arabic numerals at 12, and triangular index at 12. Inside was the Cal. 5011, a derivative of the Pellaton-winding Cal. 50000-family movement with seven-day power reserve and a power-reserve display at 3 o'clock. The 2002 relaunch became one of the defining oversized watches of the 2000s and 2010s.

2021 saw the introduction of the 43mm Big Pilot (Ref. IW329301), the first time the line dropped from 46mm to a more wrist-friendly proportion. Cal. 82100, 60-hour reserve, no power-reserve display. The 46mm continues alongside as Ref. IW501902 with the Cal. 52110 seven-day Pellaton movement. Bronze, ceramic, and Top Gun military-spec variants extend the line. Retail spans ~€10,300 (43mm) to ~€16,000+ (46mm Pellaton seven-day with bronze case).