Big Pilot Heritage Ref. IW501004 Chronograph The left chronograph registers feature

The left chronograph registers feature a textured silver pattern against the highly saturated base dial

Originally designed for the Datejust

hour markers

luxurious interpretation to the vintage brown-bezel GMTs from the 1960s and 1970s

powered by the Rolex Caliber 2236

Big Pilot Heritage Ref. IW501004 Chronograph The left chronograph registers featureIt started in 1940 when IWC produced 1,000 military navigators watches. These oversized B Uhr watches had distinctive dials and pocket watch movements converted to central seconds to be used for military applications. In 2002, IWC introduced a new automatic movement and modified it to central seconds. The result was a contemporary take on the classic B Uhr watch, dubbed the "Grosse Fliegeruhr" or Big Pilot's Watch (model number 5002). This exceptional