IWC Schaffhausen Portofino Chronograph

The IWC Portofino Chronograph, reference IW391028, is a chronograph with a 42 mm steel case. The case has a thickness of 13.6 mm. Self-winding calibre 79320 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 mesh steel bracelet. A water-resistance rating of 30 metres applies to the case. The movement has Côtes de Genève and perlage decoration. The movement consists of 240 components and has 25 jewels.