caliber 240 HU self-winding movement with World Time 24-hour and day/night indication for the 24 time zones
7mm 18K white gold case
and power reserve indicator with sweep second hand
44mm stainless steel case
faceted crown set with a faceted sapphire
IWC Pilot's Watch Chronograph Spitfire - 41.0 mm Stainless Steel Case - Black Dial - Brown Calfskin Strap - IW387903 Pilot's caliber 240 HU self-winding movement41. 0 mm stainless steel case with soft iron inner case for protection against magnetic fields, 15. 3 mm thick, screw in crown, convex sapphire glass crystal with antireflective coating on both sides, black dial with luminescence, calibre 69380 automatic movement with date, day, chronograph, column wheel, hours, minutes, small seconds, approximately 46 hours of power reserve, brown calfskin strap. Water resistant to 6 bar.