DS Action Chronograph watch model is a part of the model line Aqua, which, as the name suggests, is intended for water lovers. They will be pleased with the above-standard 300M water resistance, made possible thanks to a set of measures to inscrease the durability of the DS Concept, screw-down crown, screw-down caseback and screw-down buttons of the chronograph. There is also a oneway rotating bezel with a minute scale and a strap with diver's extension
The crystal of the watches is sapphire with double sided anti-reflective coating with 97% light transmission. The watch is powered by Swiss quartz movement ETA with Precidrive technology, thanks to which the watch ticks with an accuracy of +/- 10 seconds / year, which is 8 - 10 times more accurate than conventional quartz movements. This movement therefore meets the highest standards for accuracy (COSC), yet Certina did not get it certified. The watch also has an EOL (end of life) function, which alerts its owner to a low battery by the second hand starting to "bounce" at two-second intervals.