Hamilton Watch Khaki Navy Scuba H82515330. Luxury meets sport in this aquatic inspired timepiece designed to be equally at home in a seaside cabana or deep sea exploring. A ceramic bezel, featuring precisely engraved numerals adds high seas style to this Khaki Navy Scuba Automatic, and protects it from corrosive elements such as sand and saltwater. With a larger 43mm case, increased water resistance to 300m and an extra legible dial, this high performance watch is ready for all your adventures on, in or under the water.