Electro-luminescent backlight.
Altimeter:Range: -500 / +9000 m, rsp. -1600 .. +29500 feet . Resolution : 5 m, rsp. 10 feet
Measures the current vertical ascent or descent speed. Performs one measuring per second for the first three minutes and then one measuring every ten seconds.
Altitude alarm .
Altitude difference measuring .
Automatic measuring of the altitude and the current vertical speed every hour for the last 24 hours.
Log feature stores the following information: Date and time, Average vertical ascent speed and total ascent ,Average vertical descent speed and total descent and Number of labs (a new lap starts after a decent of at least 50 m, rsp. 150 feet while ascending or vise a versa).
Barometer: Range: 300 - 1100 mBar, rsp. 8.90 - 32.40 inHg.
Resolution: 1 mBar, rsp. 0.05 inHg .
Adjustable pressure on sea level.
Automatic hourly measuring for trend analysis .
Automatic 4-day logging with hourly measurings for the last 6 hours, after that one measuring every 6 hours.
Pressure difference measuring .
Temperature:: Temperature range: -20 - +60°C, rsp. -5 - +140°F.
Stopwatch.
Count down.
3 daily alarms.
Aluminun case and lather band.
Dimensions:
Diameter: 52 mm (2 inches).
Height: 16 mm (0.63 inches).
Weight: 55 g (1.8 ounces).
Warranty: 2 years.
You can see Instruction manual (PDF) here