Casio Men's ERA-300DB-1A2VCR Neon Illuminator Analog-Digital Display Quartz Silver Watch Imported Neon Illuminator (Black light LED), World time, Digital compass (North) Thermometer, 1/20-second stopwatch, Countdown timer, 5 daily alarms Hourly time signal, Full auto-calendar (to year 2099), 12/24-hour format Button operation tone on/off, Approx. battery life: 2 years on SR927W x 2 Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving