Features:Measure wind speed and temperature.Large easy-to-read LCD display with backlight.Wind speed in Beaufort wind scale bar graph.Wind chill indicationData hold functionHigh precision pressure sensorQuick response, external thermistorAuto/manual power offTemperature display in C/FWind speed range: 0-30m/sWind temperature range: -10 - 45 centigrade (14-113F)Current/max/average wind speed readingWind speed unit: m/s, Km/h, ft/min, Knots, mphCE ApprovedAir Velocity Specification: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: 5%Air Temperature Specification:Thermometer: NTC Thermometer.Range: Between -10C and 45C (between 14F and 113F)Storage Temperature: Between -40C and +60C, between -40F and 140F.Resolution: 0.2C, 0.36F.Accuracy: 2C, 3.6FCurrent Consumption: About 3mAOperating Humidity: Less than or equal to 90% RH.Weight: 0.25 lb approx.Package Included:1 * Digital Anemometer1 * 3V CR2032 Battery1 * Lanyard1 * User ManualNote: The first picture shows the front side and the back side. There is only one item in each package.