Complexity, compressed.

Thomas Zimmermann assembles the Big Pilot Perpetual Calendar ProSet® Le Petit Prince from the ground up - calendar mechanism, hands, dial, and white ceramic case coming together with exacting precision. Shown here for the first time as a complete watch assembly in an accelerated sequence, the video reveals the full architecture of the ProSet® perpetual calendar: a network of gears and a program wheel that tracks every month and leap year. Adjustable forward and backward via a single crown, it brings rare ease to serious complexity - down to a moon phase accurate to 1,040 years. Ref. IW339601 Find the full content in the video section of our profile. #IWCwatches #IWCpilot #WatchesAndWonders2026 #IWC #Asmr