The Casio ProTrek PRG-40-3VER features an Altimeter, Compass, Barometer and Thermometer.

Functions

• Water Resistance to 100 m
• Altimeter (-700 to 10,000 m)
• Barometer
• Thermometer (-10° to 60°C)
• Backlight
• Low-temperature resistance (-10°C)
• Resin strap
• 2-year Casio ProTrek guarantee
• Electro-luminescent backlight
• Auto light switch plus Afterglow
• Digital compass measures and displays direction as one of 16 points
• Measuring range: 0 to 359 ft; Measuring unit: 1 ft; Abnormal magnetic field detect function; Bi-directional calibration and northerly calibration function
• Altimeter measuring range: 700 to 10,000 m (-2,300 to 32,800 ft); Measuring unit: 5 m (20 ft); Auto memory measurements (up to 50 sets of data, each set including altitude, month, date, time); Reference altitude setting; Altitude alarm
• Changeover between metres (m) and feet (ft)
• Barometer display range: 260-1,100 hPa/mb (7.65-32.45 inHg); Display unit: 1 hPa/mb (0.05 inHg); Atmospheric pressure tendency graph
• 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)
• 1/100-s stopwatch
• Measuring capacity: 59'59.99"
• Measuring modes: Elapsed time, split time, 1st and 2nd place times
• Daily alarms: 5 independent daily alarms
• Hourly time signal
• Auto-calendar to year 2039
• 12/24-h formats
• Regular timekeeping: h, m, s, am/pm, month, date, day
• Accuracy: ±15 s per month
• Approx. battery life: 18 months
• Size of case: 57.0 x 53.8 x 17.9 mm