The IWC Pilot's Watch Doppelchronograph ref. 3713, produced from 1996 to 2005, was the second of IWC's pilot's watches to have a split-second chronograph. It came in stainless steel, yellow gold, or platinum with different dial options. Although some models had day-discs in different languages, this may not be seen in our pictures. The stainless steel version could be worn on a strap or bracelet, while the platinum version had only five pieces on a bracelet. Starting in 2003, the 3713 was only available with Spitfire-type dials. Reference IW3713-07 boasts a Stainless Steel case and Black dial.