IWC Schaffhausen Portofino Chronograph

The IWC Portofino Chronograph, reference IW391020, is a chronograph with a 42 mm case in 18-carat 5N gold. The case has a thickness of 13.6 mm. Self-winding calibre 75320 has a 44-hour power reserve. The silver-plated dial has a day and date display and small hacking seconds beneath convex sapphire glass with antireflective coating on both sides. The watch is on a dark brown alligator leather strap, 20 mm wide. A water-resistance rating of 30 metres applies to the case. A total of 240 components and 25 jewels make up the movement.