Casio Protrek Tough Solar Analog Digital Triple Sensor Black Resin Watch# PRW-6100FC-1 (Men Watch)

Double LED light. LED light for the face (Full auto LED light, selectableillumination duration, afterglow). LED backlight for the digital display (Full auto LED light,selectable illumination duration, afterglow). Solar powered. Low-temperature resistant (-10°C/14°F). Time calibration signal reception. 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. Manual receive. The latest signal reception results. Time Calibration Signals: Station name: DCF77 (Mainflingen, Germany). Frequency: 77.5 kHz. Station name: MSF (Anthorn, England) Frequency: 60.0 kHz. Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz. Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/ Saga). Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz. The auto hand home position correction. Digital compass. Measures and displays direction as one of 16 points. Measuring range: 0 to 359°. Measuring unit: 1°. 60 seconds continuous measurement. Hand indication of north. Bidirectional calibration. Magnetic declination correction. Altimeter. Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.). Measuring unit: 1 m (5 ft.). Hand indication of altitude differential. Manual memory measurements?(up to 30 records, each including altitude, date, time). Auto log data (High/low altitudes, cumulative ascent and descent). Others: Relative altitude readings (±100m /±1000m), Selectable measurement interval: 5 seconds or 2 minutes *1 second for first 3 minutes only *Changeover between meters (m) and feet (ft). Barometer. Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg). Display unit: 1 hPa (0.05 inHg). Hand indication of pressure differential. Atmospheric pressure tendency graph. Barometric pressure tendency information alarm (beep and arrow indicates significant changes in pressure) *Changeover between hPa and inHg. Thermometer. Display range: -10 to 60°C (14 to 140°F). Display unit: 0.1°C (0.2°F) *Changeover between Celsius (°C) and Fahrenheit (°F). World time. 29 time zones (29 cities + universal coordinated time),. One-touch UTC Time Zone Access, daylight saving on/ off, Home city/World time city swapping. 1/100-second stopwatch. Measuring capacity: 23:59'59.99''. Measuring modes: Elapsed time, split time, 1st-2nd place times. Countdown timer. Measuring unit: 1 second. Countdown range: 60 minutes. Countdown start time setting range: 1 second to 60 minutes (1-second increments, 1-minute increments). 5 daily alarms. Hourly time signal. Hand shift feature (manual or auto (during altitude, barometric pressure, and temperature measurement)). Battery level indicator. Power Saving (display goes blank and hands stop to save power when the watch is left in the dark). Full auto-calendar (to year 2099). 12/24-hour format. Button operation tone on/off. Regular timekeeping: Analog: 3 hands (hour, minute (hand moves every 10 seconds), second). Digital: Hour, minute, second, am/pm, date, day. Accuracy: ±15 seconds per month (with no signal calibration). Approx battery operating time: 6 months on rechargeable battery (operation period with normal use without exposure to light after charge) 25 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)..