The IWC Aquatimer is a watch designed around the proffesional diver. Every aspect has been meticuloulsy crafted for ease of use and legibilty in demanding environments. The dive related elements of the simple, black dial are highlighted by luminous green SuperLumninova to make them easy to read in the gloom of the oceans depths. The IWC SafeDive system ensures the bezel can be used easily and safely without compromising the integrity of the watch. The robust steel bracelet can be easily swapped over for a rubber strap with a patented quick change system.