Case / bezel material: Resin Resin Band Mineral Glass Shock Resistant 200-meter water resistance LED backlight (Super Illuminator) Full auto LED light, selectable illumination duration, afterglow Tough Solar (Solar powered) 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 Digital compass Measures and displays direction as one of 16 points Measuring range: 0 to 359° Measuring unit: 1° 60 seconds continuous measurement Graphic direction pointer Bidirectional calibration Magnetic declination correction Bearing memory Altimeter Measuring range: –700 to 10,000 m (–2,300 to 32,800 ft.) Measuring unit: 1 m (5 ft.) Altitude Memory Function: Manual Readings: 40 records, each containing date and time, direction angle, altitude, barometric pressure, and temperature Auto Save Data: High altitude, low altitude, cumulative ascent, cumulative descent (1 value each) Others: Relative altitude readings (–3,000 to 3,000 m) Selectable measurement interval: 5 seconds or 2 minutes Barometer Display range: 260 to 1,100 hPa (7.65 to 32.45 inHg) Display unit: 1 hPa (0.05 inHg) Atmospheric pressure tendency graph (past 42 hours of readings) Atmospheric pressure differential graphic Barometric pressure tendency information alarm (beep and arrow indicate significant changes in pressure) 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) Manual data recording of up to 40 records (altitude, barometric pressure / temperature, bearing, time (Time Stamp)) World time 31 time zones (48 cities + coordinated universal time), daylight saving on/off Sunrise, sunset time display Sunrise time and sunset time for specific date, daylight pointers 1/100-second stopwatch Measuring capacity: 999:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments) 5 daily alarms (with 1 snooze alarm) Hourly time signal Battery level indicator Power Saving (display goes blank 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: Hour, minute, second, pm, month, date, day Accuracy: ±15 seconds per month (with no signal calibration) Approx battery operating time: 8 months on rechargeable battery (operation period with normal use without exposure to light after charge) 23 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Size of case : 55.2×53.5×18.2mm Total weight : 93g