A tribute to the men and women who left their mark on history, this Longines Spirit Automatic Chronometer Men\'s Watch references the early days of aviation by combining modern aesthetics and technical requirements. At A Glance  Presented on a stainless steel bracelet 40mm case size with 100m water resistance Sunray blue dial with polished bezel Applied Arabic numerals filled with Swiss Super-LumiNova and date window at 3 o\'clock Silvered sandblasted hands Scratch resistant sapphire crystal glass with several layers of anti-reflective coating on both sides Powered by a Swiss self-winding mechanical movement Up to 64 hours power reserve Chronometer certified by COSC