IWC Schaffhausen Portugieser Chronograph

The IWC Portugieser Chronograph, reference IW371620, is a chronograph with a 41 mm steel case. The case measures 13 mm thick and has a lug width of 20 mm. Calibre 69355 is a self-winding movement with a power reserve of 46 hours. The white dial has small hacking seconds beneath convex sapphire glass with antireflective coating on both sides. The case carries a water-resistance rating of 30 metres. The movement has 27 jewels and 205 components, with an operating frequency of 28,800 vibrations per hour. A see-through case back displays the movement.