Hamilton H64615735 Khaki Aviation Pilot Day Date Auto 42mmHow it felt to be an early aviator, a pioneering pilot flying an airplane at the turn of the twentieth century is something that can’t be recreated, but Hamilton can give you the look - created using modern materials including stainless steel and sapphire crystal. Add an automatic movement and a perfectly proportioned 42mm case for a new take on a vintage timepiece.KHAKI AVIATIONThe Khaki Aviation collection perfectly displays Hamilton's technical know-how when it comes to creating reliable watches for pilots and urban aviators. SELF-WINDINGWrist movements cause the inner rotor to swing, transferring energy to the mainspring, and powering your timepiece.SUPER-LUMINOVA®Super-LumiNova is a type of luminescent material applied to hands, dials and bezels to make them visible in the dark.STAINLESS STEEL CASEA highly resistant alloy composed of steel and chromium. It can be worked to resemble a precious metal. It is nearly impervious to rust, tarnish, and corrosion.SAPPHIRE CRYSTALSynthetic sapphire crystal is a tough scratch-resistant material, only diamonds could leave a mark.WATER RESISTANCEYour timepiece is resistant up to 10 bar (100m) / 145 psi (328 ft).