SKYWATCH XPLORER 4

Compact anemometer-thermometer with electronic compass, pressure and altitude functions featuring wind speed measurement in km/h, mph, m/s, fps and knots. 
Balanced instant windspeed, maximum windspeed, temperature measuring (range: -40°C to 80°C). Calculation of the wind chill factor. 
Absolute pressure, relative pressure with calibration, weather forecast with barometric pressure tendencies and altitude with calibration definition. 
With backlight.