Casio PRW-3100-6 : Casio Protrek Tough Solar Men Watch

LED backlight (Super Illuminator). *1 second for first 3 minutes only *Changeover between meters (m) and feet (ft). battery operating time:. 12/24-hour format. 1/10-second stopwatch. 31 time zones (48 cities + coordinated universal time), daylight saving on/off. 22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge). 60 seconds continuous measurement. 5 daily alarms (with 1 snooze alarm). Accuracy: ±15 seconds per month (with no signal calibration). 7 months on rechargeable battery (operation period with normal use without exposure to light after charge). Approx. Altimeter. Atmospheric pressure tendency graph (past 42 hours of readings). Atmospheric pressure differential graphic. Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal. Auto log data (High/low altitudes, auto cumulative ascent and descent). Barometric pressure tendency information alarm (beep and arrow indicate significant changes in pressure) *Changeover between hPa and inHg. Barometer. Bearing memory. Battery level indicator. Button operation tone on/off. Bidirectional calibration. Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments). Countdown range: 24 hours. Digital compass. Countdown timer. Display range: -10 to 60°C (14 to 140°F). Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg). Display unit: 1 hPa (0.05 inHg). Display unit: 0.1°C (0.2°F) *Changeover between Celsius (°C) and Fahrenheit (°F). Full auto-calendar (to year 2099). Full auto LED light, selectable illumination duration,afterglow. Hourly time signal. Graphic direction pointer. Magnetic declination correction. Low-temperature resistant (-10°C/14°F). Manual receive. Manual memory measurements (up to 30 records, each including altitude, date, time). Measuring capacity: 999:59'59.9''. Measures and displays direction as one of 16 points. Measuring range: 0 to 359°. Measuring modes: Elapsed time, split time, 1st-2nd place times. Measuring unit: 1 m (5 ft.). Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.). Measuring unit: 1°. Measuring unit: 1 second. Power Saving (display goes blank to save power when the watch is left in the dark). Others: Relative altitude readings (-3,000 to 3,000 m), Selectable measurement interval: 5 seconds or 2 minutes. Solar powered. Regular timekeeping: Hour, minute, second, pm, year, month, date, day. Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz. Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz. Station name: MSF (Anthorn, England) Frequency: 60.0 kHz. Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/ Saga). Sunrise time and sunset time for specific date, daylight pointers. Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz. The latest signal reception results. Sunrise, sunset time display. Time Calibration Signals. Thermometer. Trek log data (up to 14 records of high/low altitudes, auto cumulative ascent and descent of particular treks). Time calibration signal reception. World time.