G-Shock Men's Watch G-Shock Giez GS-1001-4ADR - WW Shock Resistant (G-SHOCK), 200M Water Resistant, World Time 1/20-second stopwatch, Daily Alarm, Full Auto-Calendar (to year 2099) Regular Timekeeping, Neo-brite luminous hands and, Mineral Glass Stainless Steel Case, Screw Lock Back, Black Resin Band Accuracy: 20 seconds per month, Approx. battery life: 2 years on SR927W,Size of case / total weight: 49.8 x 46.8 x 15.2 mm / 90.9 g