The IWC Pilot's Watch Doppelchronograph ref. 3713 was introduced in 1996 and remained in production until 2005. It was the second pilot's watch from IWC to feature a split-second chronograph. The watch was offered in stainless steel, yellow gold, or platinum, with a range 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 was limited to just five pieces with a bracelet. From 2003, the 3713 was only available with Spitfire-style dials. If you're looking for a touch of luxury, the reference IW3713-13 boasts a yellow gold case and a sleek black dial