With its simple dial design and the quarter-hour scale on the internal rotating bezel, the smallest model in the diver’s watch family references the first Aquatimer released in 1967. The dive-related displays are coated with luminescent Super-LumiNova®*. The external/internal rotating bezel with the IWC SafeDive system combines ease of use with safety. The rotation of the external bezel is transmitted via a sliding clutch system to the internal rotating bezel with a triangular index and dive time scale. Pressure-resistance to 30 bar makes the watch suitable for deep dives. With the IWC bracelet quick-change system, swapping the rubber strap for the stainless-steel bracelet, and vice versa, is a snap. *IWC Schaffhausen is not the owner of the Super-LumiNova® trademark.