IWC Schaffhausen Portofino Chronograph

The IWC Portofino Chronograph, reference IW391009, is a chronograph with a steel case measuring 42 mm in diameter. The watch's case has a thickness of 13.6 mm. The movement is a self-winding movement and has a power reserve of 44 hours, 25 jewels and 240 components. Behind convex sapphire glass with antireflective coating on both sides, the silver-plated dial has a day and date display and small hacking seconds. A mesh steel bracelet is on the watch. The watch has a water-resistance rating of 30 metres. Calibre 75320 operates at a frequency of 28,800 vibrations per hour.