This compact and portable ANENG GN301 digital anemometer, based on high-speed and high-precision MCU calculation, features high accuracy and fast response of measurement. It can be used to measure wind speed and air temperature in kinds of outdoor and indoor occasions.Features:- Compact & Ultra-lightweight: Mini size and light weight for easy carrying.- LCD Display with Backlight: Humanized design for easy clear reading even in the dark.- 2 Functions Included: Wind speed and air temperature.- Switchable Units: Wind speed: m/s, km/h, ft/min, knots, MPH; temperature: C, F.- Additional Features: Available maximum and minimum value of measurement; automatic & manual power-off function; data hold function.- Wide Application: It is suitable for measuring 2 parameters mentioned above when flying an airplane, helicopter, drone, model aircraft, hiking, mountaineering, voyaging, golfing, hunting, shooting, fishing or other outdoor activities.Specifications:Model: GN301Material: ABSColor: Black&GreenPower Supply: 3 * 1.5V AAA battery (NOT included)Wind Speed Range: 0.4~30.0m/s; 1.4~108km/h; 0.9~67.0MPH; 0.8~58.0knots; 80~5900ft/minWind Speed Unit: m/s, km/h, MPH, knots, ft/minResolution: 0.1m/s; 0.1km/h; 0.1MPH; 0.1knots; 1.0ft/minAccuracy: (3%+0.3m/s); (3%+1.0km/h); (3%+0.4MPH); (3%+0.4knots); (3%+40ft/min)Temperature Range: -20~70C; -4~158FResolution: 0.1C; 0.1FAccuracy: 1.5C; 2.7FItem Size: Approx. 179.4*56*29.7mm / 7.06*2.2*1.17inItem Weight: Approx. 100g / 3.53ozPackage Size: Approx. 270*100*45mm / 10.63*3.94*1.77inPackage Weight: Approx. 155g / 5.47ozNote:Please read the Users Manual before use.Packing List:1 * Digital Anemometer1 * Users Manual(English)