Feature:1. 8in1 anemometer with backlit LCD display, userfriendly design, easy to read the value clearly.2. 8 functions include wind speed, wind cold, air temperature, humidity, heat index, dew point, air pressure and altitude.3. The switchable units are temperature: , ; wind speed: m/s, ft/min, knots, km/h, mph.4. Small and compact, ultra-light, equipped with storage bag and drawstring, easy to carry.5. Measure the maximum, minimum and average measured values, support automatic and manual shutdown, data retention and calibration functions.6. Widely used for flying airplanes, helicopters, drones, model airplanes, hiking, mountain climbing, traveling, hunting, fishing or other outdoor activities.Specification:Item Type: AnemometerMaterial: ABSModel: TL-303Color: BlackPower Supply: 300mAh Rechargeable Lithium PolymerPower Supply Model: 602030Wind Speed Range: 0-30m/S; 0-5860ft/Min; 0-55 or 0-90km/H; 0-65 MilesResolution: 0.1 M/S; 19ft/Min; 0.2 Knots; 0.3km/H; 0.2 Miles/HourAccuracy: 5%Cold Wind Range: -40-10 (0-30m/S); -49-50 (0-65mph)Resolution: 0.1; 0.1Accuracy: 1; 1.8Temperature Range: -29-70; -20-158Resolution: 0.1; 0.1Accuracy: 1; 1.8Relative Humidity Range: 0-100%RHResolution: 0.1%RHAccuracy: 3%RHThermal Index Range: 21.1-54.4 (0-100%RH); 70-130 (0-100% Relative Humidity)Resolution: 0.1; 0.1Accuracy: 2; 3.6Dew Point Range: -29-70; -20-158Resolution: 0.1; 0.1Accuracy: 2; 3.6Air Pressure Range: 10-1100hpa; 10-1100mbar; 0.29-32.48 InchesResolution: 0.1hpa; 0.1mbar; 0.01kpaAccuracy: 1.5hpa; 1.5mbar; 0.05in measuring column Altitude Range: -700-9000m; -6000-300ftResolution: 1m; 1ftAccuracy: 12m; 50ftSize: Approx. 120x50x25mm / 4.7x2.0x1.0inWeight: Approx. 229g / 8.1ozHow to Use: Get the product, lightly press the power switch button, you can turn it on. The user can adjust the parameters according to other functions. Shut down press and hold the power button for about 1 second to shut down, easy to use. .Package List:1 x Anemometer1 x USB Cable1 x Bag1 x Hanging Rope1 x ManualNote:1. Please allow 0‑1 inch error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.