IW379503-Aquatimer Chronograph Edition Expedition Charles Darwin

Bronze case,Automatic, self-winding,Diameter 44.0mm,Black rubber strap with IWC-patented quick-change system,Strap width 22.0 mm.

Small hacking seconds IWC bracelet quick-change system Sapphire glass, convex, antireflective coating on both sides Date display Mechanical external/internal rotating bezel with SafeDive system Flyback function Chronograph function with minutes and seconds