G-Shock Men's Watch G-Shock G-7800-1DR - WW Shock Resistant 200M Water Resistant Auto EL Backlight with Afterglow Flash Alert - Flasher with buzzer that sounds for alarms, hourly time signal, countdown timer time-up alarm, LED flashes to indicate mode change when button tone operation is turned off. World Time modes - 31 time zones (31 cities + Universal Coordinated Time), city code display, daylight savings on/off