Features: xIdeal for air conditioning measurement, fan manufacturing, and outdoor activities such as sailing, surfing, gliding, etc. xMeasure wind speed, temperature, max or average or current wind speed, and wind chill indication in 5 wind speed units to meet your needs. xAccurate results for your different modes. Air velocity accuracy of ± 5 percent . Air temperature accuracy of ± 2 °C, ± 3.6 °F. xLarge LCD display with backlight makes it easy to read measure results. xComes with a battery, silicone case, and a lanyard. Specifications: xAir Velocity: Range: 0 – 30 m or s, 0 – 90 km/h, 0 – 5860 ft or min, 0 – 65 mph, 0 – 55 knots Resolution: 0.1 m or s, 0.3 km/h, 19 ft or min, 0.2 mph, 0.2 knots Threshold: 0.1 m or s, 0.3 km/h, 39 ft or min, 0.2 mph, 0.1 knots xAccuracy: ± 5 percent xAir Temperature: Range: -10 - 45 °C, 14 - 113 °F Resolution: 0.2 °C, 0.36 °F Accuracy: ± 2 °C, ± 3.6 °F xPower Supply: 3V CR2032 battery xThermometer: NTC thermistor xOperating Temperature: -10 - 45 °C (14 - 113 °F) xOperating Humidity: less than 90 percent RH xStorage Temperature: -40 - 60 °C (-40 - 140 °F) xCurrent 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.