IWC Schaffhausen Ingenieur Automatic 40

The IWC Schaffhausen Ingenieur Automatic 40, reference IW328901, has a stainless steel case measuring 40 mm across. The case stands 10.7 mm thick and carries a screwed-in crown. A convex sapphire crystal with antireflective coating on both sides covers the black dial. Inside is the manufacture calibre 32111, a self-winding movement with a power reserve of 120 hours. The dial shows central seconds and a date display. IWC Schaffhausen rates the case to 100 metres. This reference uses a stainless steel bracelet. This is a design that traces back to Gérald Genta's original Ingenieur SL from the 1970s.