G-ShockGA2100SRS-7A Watch. Immerse yourself in brilliant iridescent color, the first-ever G-SHOCK with full-surface gradated crystal finish evoking reflected sunlight. Case size (L× W× H). 48.5 × 45.4 × 11.8 mm. Weight 51 g. Case / bezel material: Carbon / Resin. Resin Band. Shock Resistant. Carbon Core Guard structure. 200-meter water resistance. Power supply and battery life. Approx. battery life: 3 years on SR726W X 2. Mineral Glass. World time. Stopwatch. Timer. Alarm/hourly time signal. Double LED light. LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow). LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow). Calendar. Mute feature. Accuracy: ±15 seconds per month. 12/24-hour format. Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.). Regular timekeeping:Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day). Digital: Hour, minute, second, pm, month, date. Imported.