Khaki Aviation Pilot Pioneer Mechanical Chrono H76409530

With a distinct vintage military aviation design, the Khaki Pilot Pioneer Mechanical Chronograph brings back the form and function of the chronographs issued to British Royal Air Force pilots in the 1970s. Rugged and reliable, the 40mm watch is powered by our exclusive hand-wound H-51-Si movement.Discover our collection of rugged military watches The H-51-Si is a mechanical chronograph movement featuring a state-of-the-art balance spring made from the anti-magnetic material silicon for enhanced resistance to extreme atmospheric conditions. With an extended 60-hour power reserve, this hand-wound caliber keeps and measures time via an iconic dial complete with start/stop and reset pushers. With no rotor and no date function, this interactive movement brings modern reliability and precision to signature, vintage-inspired design.

Source: Hamilton website, last updated Mar 2026