IWC watchmaker assembles the Big Pilot's Watch Perpetual Calendar ProSet Le PetitPrince

Rethinking perpetual time. IWC watchmaker Thomas Zimmermann brings the Big Pilot's Watch Perpetual Calendar ProSet® (Ref. IW329601) to life - one microscopic component at a time. Beneath its deep blue dial lies a completely reimagined perpetual calendar, engineered to move effortlessly forward and backward with a single crown. No pushers, no fuss - just pure mechanical logic. As Thomas assembles the calibre 82665, you get a front-row seat to a system built entirely on gears, layered program wheels, and flexible mechanical "fingers" that extend and retract to handle month lengths and leap years.