The IWC Pilot's Watch Doppelchronograph ref. 3713 was a popular choice from 1996 to 2005. It was the second pilot's watch from IWC to feature a split-second chronograph. You could get it in stainless steel, yellow gold, or platinum, with different dial options and day-discs in various languages. The stainless steel version could be worn on a strap or bracelet, while the platinum one had only five pieces made with a bracelet. From 2003 onwards, the 3713 came exclusively with Spitfire-inspired dials. A Stainless Steel case and a Silver 'Spitfire' dial were the defining features of reference IW3713-48.