IWC Schaffhausen Portofino Chronograph 39

The IWC Schaffhausen Portofino Chronograph 39, reference IW391407, is a chronograph with a 39 mm steel case. The case measures 12.7 mm thick, with a strap width of 20 mm. A convex sapphire crystal with antireflective coating on both sides covers the silver plated dial. Inside is the self-winding calibre 79350, offering 44 hours of power reserve. The case carries a 3 bar, or 30 metre, water resistance rating. The chronograph combines minutes and seconds counters with a small seconds display. It is fitted on a blue alligator leather strap.