Introduction: This product is specially designed compatible with outdoor conditions,provides you temperature,humidity and wind speed data,altitude,pressure and etc,accurate measurement with professional design. Excellent compatible with sports,such as cycling and hiking,camping or other activities,great to measure your weather conditions,good compatible with your training. 8 in 1 multi-functional meter,portable and practical.Powered by battery,when it runs out of power,you can change a new one. Features: 1.Wind Speed,temperature and humidity measurement,wind chill,wind gust, 2.Wind speed unit option: compatible with m/s,ft/min,knots,compatible with km/h,mph. 3.Celsius and Fahrenheit unit switch. 4.Data maintenance function. 5.Wind chill index prompt. 6.Low power battery warning. 7.Automatic power off. 8.Calibration. anemometer only,other accessories demo in the picture are not included Specification: Main Material: Plastic Model: TL-302 Type: 8 in 1(Wind speed/wind chill/air temperature/humidity/heat index/DEW point/barometric pressure/altitude) Color: Blue,Red,Black(optional) Wind Speed: 0-30m/s Wind Chill: 0-30m/s,-45 to 10(-49 to 50F) Temperature: -29 to 70(-20 to 158F) Relative humidity: 0-RH Heat Index: 0-RH,21.1 to 54.4 Dew Point: -29 to 70 Barometric Pressure: 10 to 1100 hpa Altitude: -700 to 9000m(-6000 to 30000ft) Storage Temperature: -10 to 60(14 to 140F) Storage Humidity: 10 to 75%RH Operating Humidity: 10 to 90%RH Operating Temperature: 0 to 50(32 to 122F) Power Supply: 1 x Button Battery(Not Included) Size: One Size 11x4.5x2cm(4.33x1.77x0.79in) Quantity: 1 Pc Note: 1.No retail package. 2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind becompatible withe you bid. 3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package includes: 1 x Anemometer