The IWC Big Pilot’s Watch Perpetual Calendar ProSet “Le Petit Prince” combines technical innovation with signature design, featuring a 42mm stainless-steel case and a deep blue sunray dial with luminous rhodium-plated details for exceptional legibility. Its advanced perpetual calendar displays the date, day, month, year, and Double Moon® phase, which can be adjusted forward or backward via a single crown—powered by a newly engineered, patented module with remarkable accuracy of one day in 1040 years. Driven by the in-house 82665 calibre with a 60-hour power reserve and ceramic-enhanced Pellaton winding system, this timepiece pairs high performance with versatility, offering both a stainless-steel bracelet and blue rubber strap with quick-change functionality.