Hamilton H77705345 Khaki Navy OPENWATER AUTOProduct Overview This diver's watch, developed for the U. S. Navy's special underwater unit known as the "Frogmen," also appeared in the classic 1951 film "The Frogmen." 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. Specifications