The IWC Pilot's Watch Doppelchronograph ref. 3713 was in production from approximately 1996 to 2005. This watch was the second of IWC's pilot's watches to feature a split-second chronograph. You could choose from stainless steel, yellow gold, or platinum cases, with a variety of dial options and day-discs in different languages. The stainless steel version could be worn on a strap or bracelet, while the platinum version had a limited run of five pieces on a bracelet. In 2003, the 3713 was only available with Spitfire-style dials. Reference IW3713-27 boasts a yellow gold case and a white dial.