In 1969, Breitling created the first selfwinding chronograph movement, an invention that would lead to the development of a whole range of chronographs named Chrono-Matic. Today's 49 mm-diameter Chrono-Matic is a tribute to this forerunner of extremely large watches. The straight hands, the design of the totalizers and the steel mesh bracelet are all nods to the style of the era. The rotating bezel driving the slide rule is built from black rubber-molded steel.