A robust construction, high pressure resistance, easy readability and innovative technical functionality are the key features of the Aquatimer watches that IWC has been designing since 1967. These watches are for both professional and amateur divers. The Aquatimer Chronograph is water-resistant to 30 bar and features a 44-millimetre corrosion-resistant case. The diving indications are engraved on the blue dial with luminous material to ensure maximum readability during diving. The outer-inner rotating bezel combines safety and ease of use. The clutch mechanism transmits the rotation of the outer bezel to the inner bezel. The SaveDive system ensures that the inner ring displaying the dive time always rotates counter-clockwise. For this reason, even in the event of inadvertent misadjustment, the dive time will not be extended and the diver's safety is guaranteed at all times. Thanks to IWC's quick-change system, the blue rubber strap