Breitling has associated two of the most useful complications in daily life within an extremely stylish mechanism, complete with selfwinding chronograph and complete calendar (date, day, month, moon phases) requiring adjustment only once every leap year, meaning every 1,461 days. The complicated movement comprising around 450 parts is housed in a steel or red gold case fitted with a leather or ultra-sturdy fabric strap or a steel mesh bracelet adding a little vintage touch.