IWC Schaffhausen Portofino Chronograph

The IWC Schaffhausen Portofino Chronograph IW391035 is a chronograph with a 42 mm case in 18 ct 5N gold. The case measures 13.6 mm thick, and the blue dial sits under a convex sapphire crystal with antireflective coating on both sides. Inside is the self-winding calibre 75320, giving a power reserve of 44 hours. The watch combines chronograph, small seconds, date and weekday functions on the same dial. The watch comes on a black alligator leather strap, fitted with a 20 mm lug width. Water resistance is rated to 30 metres, or 3 bar.