Stainless steel case watch Three-hand quartz movement Hardened mineral crystal face and back split window Date window LUME block indices and hands accents for visibility in low-light conditions Unidirectional tungsten fly wheel winding system provides a 40-hour power reserve Stainless steel link bracelet Case measures 1 3/4" in diameter Strap width measures 3/4" For instructions and warranty information, visit Nixon.com