This compact anemometer design includes; a wind meter, thermometer, electronic compass, barometer and altimeter in one. The essential tool, with pressure history, for all wind and watersports enthusiasts to make a weather forecast.Features:• Balanced instant windspeed.• Maximum windspeed.• Temperature measuring range: -40°C to 80°C (-40°F to 176°F).• Calculation of the wind chill factor.• Electronic compass in degrees.• Absolute pressure from 300 to 1100hPa.• Relative pressure with calibration.• Weather forecast with barometric pressure tendencies.• Altitude with calibration.• Altitude definition - 1 meter / 3 feet.• Maximum altitude: 8000 meters.• Wind speed units: km/h, m/s, knots, mph, fps.• Maximum reading: 150 km/h, 42 m/s, 81 knots, 97 mph, 138 fps.• Backlight.• Stainless steel back.• Replaceable lithium battery.• Waterproof.• Operation temperature: -20°C to 70°C (-4°F to 158°F).• Accuracy according to Swiss standards.