Casio Men's PRW-3000-2BCR Pro Trek Digital Display Quartz Blue Watch Imported Tough solar power, multiband6 reception of six time calibration signals: japan (2), united states, Germany, England, china, triple sensor: compass, barometer/thermometer, altimeter, low temperature resistant (-10c/14 degree f) Full auto-calendar (to year 2099), 12/24-hour format, Button operation tone on/off 100 meters (330-Feet) Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving