Hamilton H76709530 Khaki Aviation Pilot Pioneer Mechanical Bronze 43mmProduct Overview Inspired by the "Model 23," a cutting edge pocket watch used by the U. S. military during World War II, the "Khaki Aviation Pilot Pioneer" pays tribute to Hamilton's aviation and military history with its unique design. This sporty and sophisticated pilot watch features classical details such as a mechanical hand wound movement and a large onion shaped crown, reflecting its heritage. The 43mm case is available in a sleek stainless