Since 1952, the Navitimer 1 automatic chronograph has been a favourite amongst pilots and aviation enthusiasts. Remaining an emblem of reliability and performance today, its famous slide rule still sets it apart from the rest.At A Glance Black alligator leather strap with white stitching 43mm stainless steel case with a rose gold bi-directional ratcheted bezel and 30m water resistance Cambered scratch-resistant sapphire crystal which is glareproofed on both sides Stratos grey dial with rose golden baton hour markers Date window at 4.30 Three chronograph sub-dials Circular slide rule Powered by the COSC chronometer certified Manufacture Breitling Calibre 01 self-winding mechanical movement Minimum power reserve of 70 hours