The firm started by Leon Breitling in 1884 is best known for its technical aviation and oceanic watches. Today, all models are outfitted with certified chronometer movements, used for accurate timing. Early aviation pioneers in specialized chronograph timepieces, Breitling introduced the circular slide rule to watches in the 1940s for use by pilots. The firm’s most iconic chronograph, the Navitimer, was introduced in 1954 and continues to be manufactured today. Another key model is the Duograph, a split-seconds chronograph that was Breitling's most prestigious wristwatch during the 1940s through '60s. Their watches are built on their reputation for precision and sturdiness.