The Hamilton Khaki X-Wind Auto Chrono is a limited edition mechanical powered by a Swiss Made movement, the first-ever ETA Valjoux 7750 movement equipped with a silicon hairspring, making it more accurate and less effected by magnetism. Its large, 45mm case features a black dial that displays hours, minutes, seconds, chronograph, day, date, and a drift-angle calculator, which pilots use to calculate cross winds.