With references to aviation throughout the design and functionality, this Longines Spirit Automatic Chronometer Chronograph Men\'s Watch is a tribute to the pioneers that conquered air, land and sea. At A Glance  Presented on a brown leather strap with white stitching 42mm case size with 100m water resistance Black matt dial with polished bezel Applied Arabic numerals filled with Swiss Super-LumiNova and date window at 4 o\'clock Chronograph sub dials and silvered sandblasted hands Scratch resistant sapphire crystal glass with several layers of anti-reflective coating on both sides Powered by a Swiss automatic movement Chronometer certified by COSC