The Aquatimer Chronograph is water-resistant to 30 bar and features a 44-millimeter case made of corrosion-resistant stainless steel. The diving-relevant indications on the blue dial are coated with luminous material to ensure optimum legibility under water. The external/internal rotating bezel combines ease of use with safety. The rotation of the external bezel is transmitted via a sliding clutch system to the internal bezel. The SafeDive system ensures that the inner ring with the dive time scale always rotates counterclockwise.