This is a pre-owned IWC Aquatimer chronograph gents IW371918 watch. 42mm case size in titanium, black baton dial on a black rubber bracelet, powered by a automatic movement. This IWC is in excellent pre-owned condition complete with box only. Circa 2010's. The case bears the serial number 311****. Our Xupes reference is W4286 should you need to quote this.