IWC Schaffhausen Portofino Chronograph

The IWC Portofino Chronograph, reference IW391008, is a chronograph with a 42 mm steel case. The case has a thickness of 13.6 mm. Calibre 75320 is self-winding and has a 44-hour power reserve. The black dial has a day and date display and small hacking seconds beneath convex sapphire glass with antireflective coating on both sides. The watch has a black alligator leather strap, 20 mm wide. A water-resistance rating of 30 metres applies to the case. The movement runs at 28,800 vibrations per hour. The calibre contains 25 jewels within an assembly of 240 components.