Hamilton Watch Khaki Navy Scuba Auto Acid Yellow H82395332. Beachside, poolside or swimming in the deep ocean, the new Khaki Navy Scuba is guaranteed to make a splash in the style stakes. For modern mariners, snorkelers, surfers and beach lovers, it’s eye-catching as well as functional, thanks to its acid yellow rubber strap and contrasting black dial. Whether you’re timing your swim, your run or your time in the sun, it will make sure you keep your cool, even in soaring temperatures.