Inside its polished steel case topped by a satin-brushed bezel, the Colt Quartz houses a COSC-certified Breitling SuperQuartz™ movement. The black, blue or silver dials focus firmly on readability thank to large hour-markers and hands enhanced by a luminescent coating. The sturdy construction, the screw-locked crown and the thick sapphire crystal (glareproofed on both sides) guarantee water resistance to a depth of 200 m (660 ft).Reference A7438811.BD45 has a Volcano Black dial.