The Hamilton Khaki Aviation X-Wind Auto Chrono H77506540 is a pilot's watch featuring a 44mm stainless steel case and a blue dial. It includes an inner rotating bezel, day-date display at the 9 o'clock position, and chronograph functions. Powered by the automatic H-21 movement, it offers a 60-hour power reserve. The watch is equipped with a sapphire crystal, screw-down crown, and is water-resistant up to 100 meters. The brown calf leather strap complements its aviation-inspired design. Reference number: H77506540.