The very first IWC Pilot’s Watches of the 1930s and 1940s set technical benchmarks, and the dial designs determined the instrument look that has remained characteristic to this day. Stainless steel case. Diameter 46.2 mm. Height 15.3 mm. Screw in crown. See-through sapphire glass back. Water resistance 6 bar. Slate-coloured dial with luminescence. Automatic, self-winding. 168 hours Power Reserve. Annual calendar with displays for the month, date and day. 7 days power reserve. Power reserve display. Brown calfskin strap. Strap width 22 mm.