In 1993, IWC released the Ref. 3711, which came before the more well-known 3713. It was the first pilot's watch from the brand to have a split-second chronograph function. The biggest difference between the 3711 and 3713 is the domed glass on the former. It was available in stainless steel, yellow gold, and platinum, with various day wheel and dial options for each. The full collection includes both steel and gold cases with black or brown alligator straps, as well as platinum cases with white or blue dials. There are also options for bracelets instead of straps.