Features: *Ideal for air conditioning measurement, fan manufacturing, and outdoor activities such as sailing, surfing, gliding, etc. *Measure wind speed, temperature, max/average/current wind speed, and wind chill indication in 5 wind speed units to meet your needs. *Accurate results for your different modes. Air velocity accuracy of ± 5%. Air temperature accuracy of ± 2 °C, ± 3.6 °F. *Large LCD display with backlight makes it easy to read measure results. *Comes with a battery, silicone case, and a lanyard. Specifications: *Air Velocity: Range: 0 – 30 m/s, 0 – 90 km/h, 0 – 5860 ft/min, 0 – 65 mph, 0 – 55 knots Resolution: 0.1 m/s, 0.3 km/h, 19 ft/min, 0.2 mph, 0.2 knots Threshold: 0.1 m/s, 0.3 km/h, 39 ft/min, 0.2 mph, 0.1 knots *Accuracy: ± 5% *Air Temperature: Range: -10 ~ 45 °C, 14 ~ 113 °F Resolution: 0.2 °C, 0.36 °F Accuracy: ± 2 °C, ± 3.6 °F *Power Supply: 3V CR2032 battery *Thermometer: NTC thermistor *Operating Temperature: -10 ~ 45 °C (14 ~ 113 °F) *Operating Humidity: less than 90 % RH *Storage Temperature: -40 ~ 60 °C (-40 ~ 140 °F) *Current Consumption: About 3 mA Package Includes: 1 x Anemometer （without Lithium Battery 3V CR2032） 1 x User manual 1 x Silicone case Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.