Description: Easy to Read: Large LCD Display with Back-light. Professional measuring instrument with large screen LCD display and back-light, easy to read data in dark environment. Professional to measure air velocity and air temperature accurately. This meter displays wind speed in 5 parameters (m/s- km/h- ft/min- knots & mph) and temperature is switchable between °C and °F. It also provides Current- Maximum- and Average speed measurement and Wind Chill indication. Various Applications: Thermo-Anemometer is a great tool for outdoor sports such as Surfing, Windsurfing, Drone flying, Sailing and Kite Flying, Mountaineering, Power industry, Steel industry, Petrifaction industry, Manufacture industry etc. Mini Size: Compact and lightweight, you can keep it in pocket. Come with a yellow protective case and wrist strap. The rubber outer case provides good protection, and the wrist strap ensures you don't lose the anemometer in a strong wind. Specifications: Model: GM816. Color: show as pictures. Size: 105*40*18mm. Material: plastic and metal. Range: 0 - 30m/s, 0 - 90km/h, 0 - 58 60ft/min, 0 - 65mph, 0 - 55Knots. Resolution: 0.1m/s, 0.3km/h, 19ft/min, 0.2mph, 0.2Knots. Air Temperature Range: -10°C ~ +45°C, 14°F~ 113°F. Resolution: 0.2°F, 0.36°F. Accuracy: ±2°C, ±3.6°F. Operating Temperature: -10°C ~ +45°C (14°F~ 113°F ). Operating Humidity: Less than or equal to 90% RH. Measure wind speed and temperature. Current/max/average wind speed reading. Temperature display in Celsius Fahrenheit. Wind speed unit: m/s, Km/h, ft/min, Knots, mph. Wind speed in Beaufort wind scale bar graph. Large easy-to-read LCD display with backlight. Auto/manual power off. Wind chill indication. Low battery indication. Powered by a 3V CR2032 battery(not included). Package Include: 1 * Anemometer. 1 * User Manual. 1 * Neck Strap. Professional to measure air velocity and air temperature accurately LED back light design for operation under poor illumination LED back light design for operation under poor illumination