Compact & Ultra-light: pocket-sized product comes with a storage pouch and lanyard for convenient carrying. LCD Display with Backlight: Humanized design for easy clear reading.8 Functions Included: Wind speed, wind chill, temperature, humidity, heat index, dew point, barometric pressure and altitude.Switchable Units: Temperature: C, F; wind speed: m/s, ft/min, knots, km/h, mph.Additional Features: Available maximum, minimum and average value of measurement; automatic & manual -off function; data hold function; calibration function.Wide Application: It is suitable for measuring 8 parameters mentioned above when flying an airplane, helicopter, drone, model aircraft, hiking, mountaineering, voyaging, golfing, hunting, , fishing or other outdoor activities.Model: TL- Supply: 1 * rechargeable 300mAh lithium polymerWind Speed Range: 0~30m/s; 0~5860ft/min; 0~55knots; 0~90km/h; 0~65mphResolution: 0.1m/s; 19ft/min; 0.2knots; 0.3km/h; 0.2mphAccuracy: 5%Wind Chill Range: -40~10C (0~30m/s); -49~50F (0~65mph)Resolution: 0.1C; 0.1FAccuracy: 1C; 1.8FTemperatureRange: -29~70C; -20~158FResolution: 0.1C; 0.1FAccuracy: 1C; 1.8FRelative Humidity Range: 0~100%RHResolution: 0.1%RHAccuracy: 3%RHHeat Index Range: 21.1~54.4C (0~100%RH); 70~130F (0~100%RH)Resolution: 0.1C; 0.1FAccuracy: 2C; 3.6FDew Point Range: -29~70C; -20~158FResolution: 0.1C; 0.1FAccuracy: 2C; 3.6FBarometric Pressure Range: 10~1100hpa; 10~1100mbar; 0.29~32.48inHgResolution: 0.1hpa; 0.1mbar; 0.01inHgAccuracy: 1.5hpa; 1.5mbar; 0.05inHgAltitude Range: -700~9000m; -6000~30000ftResolution: 1m; 1ftAccuracy: 12m; 50ftItem Size: Approx. 11.5 x 4 x 2cm / 4.53 x 1.57 x 0.79inItem Weight: Approx. 47g / 1.66ozcolor:BlackMaterial:ABSPackage Contents:1 x Digital Anemometer1 x USB Charging Cable1 x Storage Pouch1 x Lanyard1 x Users Manual(English)Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.