Casio Pathfinder Solar Atomic Watch #PAW500T-7V Multi-Band 5 - Atomic Timekeeping (US, UK, Germany, Japan (2)); Receives time calibration radio signals which keep the displayed time accurate in each of these countries Tough Solar Power; Shock Resistant; Auto EL Backlight with Afterglow World Time - 29 times zones (30 cities), city code display, daylight saving on/off Relative altitude display; Altitude tendency graph; Altitude differential graphic; Barometer Water resistant to 330 feet (100 M): suitable for snorkeling, as well as swimming, but not diving