Direction Bezel Mineral Glass 100-meter water resistance Case / bezel material: Resin Resin Band Electro-luminescent backlight Full auto EL light, selectable illumination duration, afterglow Solar powered Low-temperature resistant (-10 °C/14 °F) Digital compass Measures and displays direction as one of 16 points Measuring range: 0° to 359° Measuring unit: 1° 20 seconds continuous measurement Graphic direction pointer Bidirectional calibration and northerly calibration function Magnetic declination correction Bearing memory Altimeter Measuring range: -700 to 10,000 m (-2,300 to 32,800 ft.) Measuring unit: 5 m (20 ft.) Manual memory measurements (up to 25 records, each including altitude, date, time) High Altitude / Low Altitude memory Total Ascent / Descent memory Others: Reference altitude setting, Altitude tendency graph, Altitude differential *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) Atmospheric pressure tendency graph Atmospheric pressure differential graphic *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) Duplex LC display World time 31 time zones (48 cities), city code display, daylight saving on/off Sunrise, sunset time display Sunrise time and sunset time for specific date, Daylight pointers 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 start time setting range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1- minute increments and 1-hour increments) Daily alarms 5 independent daily alarms 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, year, month, date, day Accuracy: ±15 seconds per month Approx. battery operating time: 6 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: 57.3 × 50.9 × 15.3 mm Total weight: 65.4 g EL:Blue Green The evolution of PROTREK never stops. These new models embody some of the very best in functional beauty and ease of operation that modern technology has to offer. The rotary bezel is specially shaped for easy operation, even while wearing gloves. Large letters indicating north, south, east, and west are colored for easy reading. Dedicated direction, barometer, and altitude buttons provide one-touch access to measurements. Buttons are large with slanted diamond patterns for plenty of slip resistance during operation. Since "easy to press" often also means "more operation error", the back cover is designed to make it the same height of the button surfaces, which greatly reduces the chance of operation error. The result is easy button operation, but only when you need it to be. The number of pointer lines has been increased from 60 to 72 for easier to read World Time and sunrise times. TOUGH SOLAR ensures stable operation even when using power-hungry functions. Brand Casio SKU 101026213_NP-1021568050 Dial Size Other Watch Feature Alarm,Altimeter,Chronograph,Compass,Date,Luminous,Calendar Strap Material Resin Movement Quartz Watch Case Shape Round Watch's water resistance 100m Model PRG-240-1DR