Hamilton H77705145 Khaki Navy Khaki Navy Open WaterProduct Overview This diver's watch, developed for the U. S. Navy's special underwater unit known as the "Frogmen," also appeared in the classic film "The Frogmen," released in 1951. Nearly 70 years have passed since then, and watchmaking technology has made significant advancements. It features excellent diving functions suitable for the film, such as a unidirectional rotating bezel, top notch water resistance, and high visibility underwater.