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 slim, chamfered shape of the external bezel with its gently rounded and recessed grips, on the other hand, was inspired by the legendary Porsche design of the Ocean 2000 of 1982. The silver-plated dial looks particularly elegant: the colour of the inlaid luminescent material is slightly more discreet, which does not detract from its legibility in the dark or in adverse visibility conditions. 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.