The IWC Big Pilot’s Watch Perpetual Calendar ProSet in 18-carat 5N gold pairs refined luxury with advanced watchmaking, featuring a 42mm gold case and crown alongside an olive green sunray dial with luminous gold appliqués and hands. Its innovative perpetual calendar displays the date, day, month, year, and Double Moon® phase, all adjustable forward or backward via a single crown thanks to a patented gear-based module with exceptional accuracy of one day in 1040 years. Powered by the in-house 82665 calibre with a 60-hour power reserve and a ceramic-enhanced Pellaton winding system, this timepiece is finished with an olive green buffalo leather strap and gold folding clasp, delivering both technical mastery and elevated style.