Digital wind direction with wind vane, cross wind, head/tail wind readings in degrees or compass points. Jackknife case allows the most accurate measurements. All wind functions in user selected units * Digital wind direction in degrees & compass points * Cross & head/tail wind readings * Temperature * Windchill * Reads in tenths * Backlight * Tripod fitting * Water resistant Specifications: Windspeed accuracy +/- 3% from .8-89Mph * Wind speed range to 135Mph * Digital compass/wind direction accuracy +/- 2° * Temp/Windchill accuracy +/- 1.8° F * Optional Units: Mph, km/h, kt, ft/min, m/s, BF (Beaufort) * F or C * Avg windspeed over 10 secs * Max windspeed 2 sec gust since power on * Auto shutdown* POWER: CR2032 replaceable Lithium battery (included) * Measures: 5.5” x 1.75” x .75” closed * Weighs 3.2oz with battery. 2-yr warranty.