Features: The HP866B digital anemometer accurately measure wind speed and is suitable for various environment. It features a Easy Carry design and is easy to operate. High-Precisions Sensors, large display of wind speed data, Backlight screen, low battery prompt, housing. Suitable for meteorological enthusiasts, outdoor athletes, sailors and engineering technicians to use. It is widely apply in fields such as outdoor exploration, wind power generation, construction, and agricultural meteorological observation. Produced of quality plastic for long service. Specifications: Material: plastic Length: about 165mm/6.49inch Width: about 85mm/3.34inch Package Includes: 1xWind Speed Meter note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.