From Casio G-Shock, the watch brand recognized for tough timekeeping, this GA-2100 thin series analog-digital watch will set a new standard for strength and durability. This Carbon Core Guard structure style boasts a black resin case and camouflage bezel that is reinforced with lightweight carbon fiber for added resilience and shock resistance. For easy visibility in the dark, this watch also boasts a double LED light, one for the face and one for the digital display. Button structure shock resistance has been improved, which eliminates the need for external button guards. The face of the watch consists of a disk pointer and raised hour markers for a look of bold toughness. Topping off this utilitarian design is a multidimensional face, a large front button, and mineral glass protection. Highly functional, this watch also contains many features synonymous with G-Shock including world time, full auto-calendar, 5 daily alarms, 200-meter water resistance, and 1/100th stopwatch. To complete this timepiece is a black resin strap with buckle closure. Shock-resistant. Mineral Glass. 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). Case Size: 48.5x45.4x11.8mm Black resin case. Camouflage octagon bezel. Black analog-digital dial. Button operation tone on/off. 1/100-second stopwatch. Countdown timer. Hand shift featur. 5 daily alarms. Hourly time signal. Full auto-calendar (to year 2099). 12/24-hour format. Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day) Digital: Hour, minute, second, pm, month, date Black resin band with buckle closure 200 meter water resistant Accuracy: +/-15 seconds per month Approx. battery life: 3 years on SR726W x 2 Casio G-Shock Style #: