Shock Resistant, 200-meter water resistance, Electro-luminescent backlight, Afterglow Telememo, World time, 29 time zones (30 cities), city code display, daylight saving on/off Day Counter, stopwatch, Countdown timer, Daily alarms, 5 independent daily alarms Hourly time signal, Full auto-calendar (to year 2099), 12/24-hour format, Button operation tone on/off Approx. battery life: 3 years on CR1616