IWC Schaffhausen Ingenieur Automatic 40

The IWC Ingenieur Automatic 40, reference IW328901, has a 40 mm steel case. The case is 10.7 mm thick and has a screw-down crown; calibre 32111 is self-winding and has a 120-hour power reserve and 21 jewels. The black dial has a date display and central hacking seconds. The watch is on a steel bracelet. The case carries a water-resistance rating of 100 metres. A soft-iron inner case is part of the watch's construction. The movement runs at 28,800 vibrations per hour. The crystal is made from sapphire, with a convex shape and antireflective coating on both sides.