IWC Schaffhausen Portofino Chronograph

The IWC Schaffhausen Portofino Chronograph IW391027 is a chronograph with a 42 mm steel case. The case measures 13.6 mm thick, and the lug width is 20 mm. A convex sapphire crystal with antireflective coating on both sides covers the silver plated dial. Inside is the self-winding calibre 79320, which runs at 28,800 vibrations per hour with 25 jewels across 240 components and offers 44 hours of power reserve. Beyond the chronograph function with hours, minutes and seconds, the dial carries a date display, small hacking seconds and a weekday indicator. The watch is fitted to a dark brown alligator leather strap. Water resistance is rated to 30 metres.