High precision fixed wind speed measurement Wind speed range: 0.3 - 30 m / s (max up to 69 km per hour) and wind speed accuracy: 5% Novelle Function Support 0-6000m altitude test and atmospheric pressure detection. This is useful for mounting and comparing atmospheric pressure values. Multifunction anemometer Wind speed, temperature and freezing wind on an LCD screen. The portable digital anemometer measures wind speed in 5 units: M / S, km / h, ft / min, knots, mph. Specifications longer than other wind speed gauges Thanks to built-in temperature controller to adjust C / F temperature. Max / min / media / current recording and recall function. Low battery indicator. The screw hole in the button can be attached to a cord. Wind speed range: 0.3-30 m / s (MAX up to 69 mph) Wind speed accuracy: 5% 1 * HoldPeak 866B-WM digital anemometer 2 * 1.5V AAA Battery 1 * User manual p Note: It does not include other things, the color is based on the first picture, and the other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you!