IWC Schaffhausen Portofino Chronograph

The IWC Schaffhausen Portofino Chronograph IW391025 is a chronograph with an 18 ct 5N gold case measuring 42 mm across. The dial is silver-plated, and the case stands 13.6 mm thick. A convex sapphire crystal with antireflective coating on both sides covers the dial. Inside is the self-winding calibre 79320, offering 44 hours of power reserve. Beyond the chronograph function, the watch shows the date, weekday and small seconds. IWC Schaffhausen rates the case to 30 metres. The watch comes on a dark brown alligator leather strap, 20 mm at the lugs.