Darwin stated that the species with the best chance of survival were those most willing to change. In this respect, the new Aquatimer Chronograph’s chances of success are very promising. Because, compared with its predecessor, there are not only recognizable changes in appearance: the chronograph’s technical features also represent a massive leap forward in the evolution of the IWC Aquatimer. The newly developed external/internal rotating bezel with a SafeDive system designed to prevent inadvertent changes of the dive time boosts the practical use of the diver’s watch, as does the increase in water-resistance from 12 to 30 bar. The chronograph function handles single stop times and aggregate timing up to 12 hours. Thanks to the more reserved choice of colours and shape, the chronograph – which comes with a black or silver dial – cuts a fine figure for everyday wear: only the yellow seconds hand in the subdial at “9 o’clock” serves as a reminder of its more coloured past. The distinctly purist design of the dial recalls the look of the first Aquatimers in 1967 and gives it a more modern twist. With its slimmer external rotating bezel, the watch looks elegant despite the unchanged case diameter of 44 millimetres and the newly acquired cover on the sliding clutch system at “9 o’clock”.