This sleek wind meter is very accurate, very tough and very affordable. Simply hold it up to measure wind speed, whenever and wherever needed. The meter can track maximum and average wind speeds, along with current readings. Measures in knots, mps, kph, mph, fpm and Beaufort force. Measures wind speed with a precision ultra light impeller that turns on sapphire bearings. It is completely waterproof, floats and includes a slip-on case and batteries. Weighs only 2 oz.