Big Pilot's Watch Perpetual CalendarContinuing the long standing tradition of perpetual calendar watches Powered by the IWC manufactured 52615 caliber automatic movement Featuring a 46mm stainless steel case and secured with a blue leather strap Boasting a 7 day power reserve Defined by its perpetual calendar with displays for the date, day, month, year in four digits and perpetual moon phase for the northern and southern hemisphere OUTSTANDING TIMEKEEPING Developed during the 1980s by