IWC Schaffhausen Portofino Chronograph

The IWC Portofino Chronograph, reference IW391037, is a chronograph with a steel case measuring 42 mm in diameter. The watch's case has a thickness of 13.6 mm. Calibre 75320 is a self-winding movement and has a power reserve of 44 hours, 25 jewels and 240 components. The silver-plated dial has a day and date display and small hacking seconds. The watch is on a blue alligator leather strap, 20 mm wide. The case carries a water-resistance rating of 30 metres. The movement runs at 28,800 vibrations per hour. Convex sapphire glass with antireflective coating on both sides covers the dial.