A favourite amongst pilots and areonautical enthusisasts since 1952, this Breitling Navitimer B01 Chronograph 43 Automatic Men\'s Watch displays both technical innovation and original design. At A Glance  Presented on a black leather strap with push button folding clasp 43mm case size with 30m water resistance Blue dial with chronograph sub dials Bidirectional bezel White baton hour markers Date window at 4 o\'clock Scratch resistant sapphire crystal glass, glareproofed both sides Powered by the Breitling Calibre 01 automatic movement Power reserve of 70 hours