G-Shock GDX6900 Watch - G-Shock GDX6900 watch by Casio. Shock resistant. 200 meter water resistant. EL backlight with afterglow. Alpha Gel casing. Flash alert. 1/100 second stopwatch. Countdown timer. Multi-function alarm. Hourly time signal. World Time: 29 times zones (48 cities), city code display, daylight saving on/off. Full auto-calendar (pre-programmed until the year 2039). 12/24 hour formats. Accuracy: +/- 15 seconds per month. Battery CR2032. Approx battery life: 10 years. Module 3410. Imported.