IWC Schaffhausen Portofino Chronograph 39

The IWC Portofino Chronograph 39, reference IW391503, is a chronograph with a 39 mm steel case. The case measures 13 mm thick and carries a water-resistance rating of 50 metres. Self-winding calibre 69355 has a power reserve of 46 hours. The white dial has central hacking seconds beneath convex sapphire glass with antireflective coating on both sides. The movement contains 27 jewels and consists of 205 components. A steel bracelet is on the watch. The calibre operates at a frequency of 28,800 vibrations per hour. A see-through case back gives a view of the movement.