The Breitling Navitimer 1461 is a limited edition steel chronograph that showcases the brand's iconic aviation slide rule and a special "leap-year calendar" that only needs to be adjusted every four years - that's 1,461 days! The intricate movement is made up of 450+ components. The date, day, and month are displayed on subdials, along with a cool moon-phase window against a black backdrop. This particular model has the reference number A1937012.BA57.760P.