amilton has been providing the flying community with precision timepieces for over a century, from the first U.S. Airmail service in 1918 to today’s daredevil air racers. With the Khaki Aviation Converter, the brand provides a way for modern aviators to perform crucial flying calculations on their wrists.
The watch’s distinguishing feature is a bi-directional rotating bezel, whose logarithmic graduations interact with the fixed scale around the dial, creating a ‘slide rule’ for performing mathematical calculations while in flight. These could include critical factors like airspeed, distance, fuel consumption, rate of climb or descent, and flight time.
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The Khaki Aviation Converter is offered in a 42mm automatic version fitted with the H-10 automatic movement, whose balance spring is made of NivachronTM alloy; a 44mm GMT model with a blue dial, powered by the H-14 movement; or an automatic chronograph featuring the H-21-Si movement, which uses a high-tech silicon balance spring.
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The Hamilton Khaki Aviation Converter Auto Chrono features a black dial that houses the H-21-Si automatic chronograph movement with 60-hour power reserve and day-date function. It is equipped with a silicon balance spring.