the description product specification MINERAL GLASS 50-METER WATER RESISTANCE CASE / BEZEL: ION PLATED STAINLESS STEEL BAND TRIPLE-FOLD BUCKLE REGULAR TIMEKEEPING ANALOG: 3 HANDS (HOUR, MINUTE, SECOND) ACCURACY: 20 SECONDS PER MONTH APPROX. BATTERY LIFE: 3 YEARS ON SR626SW SIZE OF CASE/TOTAL WEIGHT: 35.5 X 30 X 7.5 MM/58 G