@iwcwatches: Mastering time, one turn at a time. With measured precision, IWC watchmaker Thomas Zimmermann builds the stainless-steel Big Pilot Perpetual Calendar ProSet® Le Petit Prince step by step - focusing on the key components that define its perpetual calendar. A sophisticated program wheel encodes the rhythm of the Gregorian calendar, while layered gears keep every display perfectly aligned. The entire system adjusts seamlessly in both directions via the crown, maintaining full synchronization at all times. Completed with hands, dial, and case, and featuring a moon phase accurate to 1,040 years, this is watchmaking designed to endure. Ref. IW329601 #IWCwatches #IWCpilot #WatchesAndWonders2026 #IWC #Asmr