Casio Men's PRW-3500Y-1CR Pro Trek Quartz Solar Atomic Digital Display Black Watch Solar-powered digital watch fully equipped with rotating bezel, digital compass with bearing memory, altimeter, barometer, thermometer, 48-city world time, four alarms with snooze, stopwatch, 24-hour countdown, and 12/24-hour display 56.9 mm stainless steel case with mineral dial window Quartz movement with digital display. Thermometer Display range: -10 to 60 C (14 to 140 F) Display unit: 0.1 C (0.2 F) Resin band with fold-over push-button clasp and safety closure.Water resistant to 200 m (660 ft): In general, suitable for professional marine activity and serious surface water sports, but not scuba diving Despite their smaller size, the new sensors in this model provides improved reading accuracy and energy efficiency