This handy for palm sized anemometer is ideal for weather enthusiast， lovers of kite flying，kite-surfing， wind-surfing， paragliding and sailors.Not only will it help you measure wind speed， but it will also help measure temperatureand wind chill indication. Made by professional manufacture.Wind speed measure in mph，ft/min，Km/h，m/s or Knots (Current/Average/Max)Wind speed in Beaufort wind scale bar graphMeasurement range: 0.3-30m/sWind chill indicationTemperature display in Celsius or FahrenheitLCD back lightAuto/Manual OFFNeck band includedCR2032 3V lithium battery operation (not included)SIZE: 10.4 x 3.8 x 1.6 cm