Hamilton Watch Khaki Navy Pioneer Auto H78415733. Hamilton Watch Khaki Navy Pioneer Auto. Todays Hamilton Khaki Navy Pioneer also exists in three 40mm unlimited references powered by an ETA 2895 automatic movement which can be seen through the clear case back. The dial gets a sumptuous classical look through a velvety finish and is protected by an antireflective glass to create a strong and classy timepiece that will stay in the collection as a legacy to the Hamilton marine chronometer.