Ballast Men's BL-3118-01 Bright Star Analog Swiss-Quartz Black Watch You will always know what time it is with the self-powered tritium gas tube lighting system on this super-lightweight watch Swiss quartz with date Carbon fiber reinforced polycarbonate / unidirectional turning bezel Includes silicone strap as well as nylon nato strap Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving