The IWC Big Pilot's Watch 46 Perpetual Calendar Stainless Steel Blue Dial ref. IW503605 is a stunning timepiece that combines classic design with advanced complications. The 46mm stainless steel case exudes strength and elegance. The deep blue dial features silver-tone hands and Arabic numeral hour markers, offering excellent legibility. The perpetual calendar complication displays not only the date, but also the day, month, and year, including leap years, making it accurate until 2100. Powered by a self-winding movement, this watch boasts a remarkable power reserve of up to 7 days. The watch also features a power reserve indicator, moon phase display, and a small seconds sub-dial. With its sophisticated complications and exquisite craftsmanship, the IWC Big Pilot's Watch 46 Perpetual Calendar is a remarkable timepiece for collectors and connoisseurs.