Go sleek, sharp and bold with a G-SHOCK standard-bearer in a metal-clad octagonal take on the original iconic design. Shock-resistant construction protects against impact and vibration. \ -Shock Resistant \ -Mineral Glass \ -Neobrite \ -Dark GreyIon Plated case \ -200-meter water resistance \ -Case / bezel material: Resin / Stainless steel \ -Resin Band \ -Double LED light \ -World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off \ -1/100-second stopwatch Measuring modes: Elapsed time, split time, 1st-2nd place times \ -Countdown timer \ -5 daily alarms \ -Hourly time signal \ -Hand shift feature \ -Full auto-calendar (to year 2099) \ -12/24-hour format \ -Button operation tone on/off \ -Regular timekeeping \ -Accuracy: ±15 seconds per month \ -Approx. battery life: 3 years on SR726W × 2 \ Size of case: 49.3×44.4×11.8mm