Hamilton H76746540 Khaki Aviation Converter Auto ChronoProduct Overview The "Khaki Aviation Converter Auto Chrono," which stirs the adventurous spirit for the great skies, utilizes a bi directional rotating bezel with a slide rule to perform necessary unit conversions and calculations for flying. This pilot watch, featuring the H 21 Si movement with a silicon escapement, achieves high performance and precision. It combines a 44mm stainless steel case with a brown leather strap and a blue dial reminiscent