Description: This anemometer with palms size is protective by rubber . It can measure wind speed and temperature accurately. It is an great tool for windsurfing, sailing, kite flying, measuring speed And temperature of the CPU computer fans, air conditioners, etc. Features: Max wind speed/average wind speed/current wind speed selection degree centigrade/degree fahrenheit temperature unit selection 5 Units selection: m/s, Km/h, ft/min, Knots, mph Wind force level LCD backlight display Manual/Automatic power off Low power tips Measuring Mode: can measure wind speed and temperature with max / average / air flow Design: portable size, large LCD screen with backlight, chill indication and battery level Notice: Actual color may be slightly different from the image due to different monitor and light effect Please allow 1-3cm deviation due to manual measurement Specification: Airspeed Range: 0-30 m / s, 0-5860Ft / min, 0-55 Knots, 0-90 km / h, 0-65Mph Resolution: 0.1 m / s, 19 Ft / min, 0.2 knots, 0.3 km / h, 0.2 MPh Threshold: 0.1 m / s, 39 ft / min, 0.1 knots, 0.3 km / h, 0.2 MPh Accuracy: ± 5%. Air Temperature range: -10 ~ + 45 degree centigrade, 14 ~ 113 degree fahrenheit Resolution: 0.2 , 0.36 degree fahrenheit Accuracy: ±, ± 6 degree fahrenheit Thermometer: NTC Thermometer Operating temperature: -10 ~ + 45 degree centigrade (14  ~ 113 degree fahrenheit) Humidity: Less than or equal to 90% RH Storage Temperature: -40 ~ + 60 degree centigrade, -40 ~ 140 degree fahrenheit Power consumption: About 3 mA Wind speed Unit: m / s, Km / h, M / min, Knots, Mph Power: 3 V CR2032 battery (not included) Dimensions: 107x43x21mm Include: 1x Anemometer 1x Neck Strap /Lanyard 1x Manual