Reference IW371117. Diameter 42mm. A technically and visually stunning IWC double chronograph from the first production series in 1993. A perfect vanilla tritium dial with an original tritium hand set. An XXL steel bracelet for wrists up to 22cm with a double folding clasp. An absolute dream watch for true connoisseurs. The watch is registered with IWC and has undergone our Certified Pre-Owned process.