This Casio® Pathfinder PAG40B-2V Sport Watch offers many handy features for outdoor use including an altimeter, a barometer, thermometer, and digital compass. It also features a 1/100 second stopwatch and backlit display and is water resistant to 100 meters. Tough enough for any outdoor activity, the Casio Pathfinder sport watch makes a great gift for any adventurer. Special Features 100 Meter water resistant Low Temperature Resistant (-10°C/14°F) Automatic Electro-Luminescent Simply tilting your wrist 40 degrees toward you from the horizontal position illuminates the watch (can be deactivated) Altimeter • Measuring range: 0 to 32,800 ft (0 to 10,000 meters) • Measuring unit: 20 ft (5 m) • Auto memory function • Up to 50 sets of altitude memory with date and temperature • Target altitude alarm,graph display for target altitude,Altitude tendency graph • Changeover between feet and meters Barometer: • Measuring range: 18.00 inHg to 32.45 inHg. (610 hPa to 1100 hPa) • Measuring unit 0.05 inHg (1 hPa) • Tendency graph display of atmospheric pressure • Changeover between inHg to hPa Thermometer: • Measuring range: -14 degrees F. to 140 degrees F. (-10 C to 60 C) • Measuring unit: 0.2F (0.1 C) • Changeover between Celsius to Fahrenheit Digital compass: • Measures and displays in 16 directions • Measuring range 0 to 359 degrees • Measuring unit: 1 degree • Memory capacity: 5 sets of measurement data with direction, month,date, and measurements time • Abnormal magnetic field detect function • Bi-directional calibration and northerly calibration nction • Rotating direction bezel Regular Timekeeping :hour, minute, second, AM/PM, date, day 12/24-Hour Formats Daily Alarm Hourly time signal Alarm chronograph 1/100 second stop watch. Measuring mode: elapsed time, split time, 1st-2nd place time. Accuracy: ±15 seconds per month