Specifications:Digital Pocket Anemometer Wind Speed Meter ThermometerAir Velocity:Range: 0 - 30m/s， 0 - 90km/h， 0 - 5860ft/min， 0 - 65mph， 0 - 55KnotsResolution: 0.1m/s， 0.3km/h， 19ft/min， 0.2mph， 0.2KnotsThreshold: 0.1m/s， 0.3km/h， 39ft/min， 0.2mph， 0.1KnotsAccuracy: u00a1u00c05%Air Temperature:Range: -10 - 45degree， 14 - 113FResolution: 0.2degree， 0.36F Accuracy: u00a1u00c02degree， u00a1u00c03.6FPower Supply: 1 * 3V CR2032 battery(Not included)Thermometer: NTC ThermometerOperating Temperature: -10~45degree (14~113F)Operating Humidity: less than or equal to 90%RHStorage Temperature: -40~60degree， -40~140FCurrent Consumption: About 3mAItem Size: 105 * 60 * 20mmWeight: 63g Package including:1 * Anemometer1 * Lanyard1 * User Manual