The Big Pilot’s Watch Perpetual Calendar ProSet “Le Petit Prince” (Ref. IW329601) represents a remarkable fusion of poetic storytelling and cutting-edge watchmaking innovation. Crafted in a 42.9mm stainless steel case, its deep blue dial—enhanced by rhodium-plated numerals, indices, and luminous hands—captures the quiet beauty of the night sky, a signature of IWC’s “Le Petit Prince” editions. Beneath this refined exterior lies one of the most advanced perpetual calendars ever created, featuring IWC’s groundbreaking ProSet® system. Designed entirely around a synchronised, gear-based architecture, it allows the calendar to be adjusted both forwards and backwards with exceptional ease, redefining how this traditionally complex complication is experienced.

Powered by the IWC-manufactured calibre 82665 with a 60-hour power reserve, the watch displays the full Gregorian calendar—including date, day, month, four-digit year, and a highly precise perpetual moon phase accurate to 1,044 years. Visible through the sapphire case back, the movement reveals a gold-plated rotor medallion depicting the Little Prince on his asteroid, a subtle yet powerful tribute to imagination and exploration. Paired with a stainless steel bracelet and an additional blue rubber strap—both featuring the EasX-CHANGE® system—this timepiece offers versatility alongside its technical mastery, making it a truly modern interpretation of one of horology’s most revered complications.