Casio G-Shock: Standard Series March 2007 Model Watch . Size of Case / total weight: AW-582C 55.2 x 47.6 x 14.2 mm / 51 g. World time: 29 time zones (27 cities), city code display, daylight saving on/off. Shock resistant (G-SHOCK). Regular timekeeping. LED light. Hourly time signal. Daily alarms. Countdown timer. Auto-calendar (to year 2039). 1/100-second stopwatch. LED: Amber. Battery Life: 3 YRS. Battery Type: CR1220. Accuracy per month: ±15 sec. Case: Resin. # AW-582C-2A #.