Features 1、- Compact /u0026 Ultra-lightweight: Mini size and light weight for easy carrying. 2、- LCD Display with Backlight: Humanized design for easy clear reading even in the dark. 3、- 2 Functions Included: Wind speed and air temperature. 4、- Switchable Units: Wind speed: m/s, km/h, ft/min, knots, MPH; temperature: °C, °F. 5、- Additional Features: Available maximum and minimum value of measurement; automatic /u0026 manual power-off function; data hold function. 6、- 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. Specification 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: GN301 Material: ABS Color: Black&Green Power 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/min Wind Speed Unit: m/s, km/h, MPH, knots, ft/min Resolution: 0.1m/s; 0.1km/h; 0.1MPH; 0.1knots; 1.0ft/min Accuracy: ±(3%+0.3m/s); ±(3%+1.0km/h); ±(3%+0.4MPH); ±(3%+0.4knots); ±(3%+40ft/min) Temperature Range: -20~70°C; -4~158°F Resolution: 0.1°C; 0.1°F Accuracy: ±1.5°C; ±2.7°F Item Size: Approx. 179.4*56*29.7mm / 7.06*2.2*1.17in Item Weight: Approx. 100g / 3.53oz Package Size: Approx. 270*100*45mm / 10.63*3.94*1.77in Package Weight: Approx. 155g / 5.47oz Note: Please read the Users Manual before use. Packing List: 1 * Digital Anemometer 1 * Users Manual(English) Package List 1 * Digital Anemometer 1 * Users Manual(English)