<p> The Caldwell&reg; Wind Wizard II™ Wind Speed Meter gives shooters the ability to compensate for wind drift while in the field, according to varying wind conditions. The wind blowing bullets off target causes more misses in long range hunting than perhaps any other factor, and without a wind speed meter it is extremely difficult to allow for. The compactness and portability of the Caldwell Wind Wizard II enables you to have it with you at all times; and its ease of use enables you to quickly get an accurate reading of wind speed. The Wind Wizard II also gives you the temperature in Celsius and Fahrenheit, and gives wind speed in mph, ft/min, km/h, m/s, or knots. A removable non-slip rubber sleeve protects the unit and provides a sure grip even with gloved hands, and a lanyard ensures the unit is always within reach and won't drop to the ground. The Caldwell Wind Wizard II Wind Speed Meter is an ideal tool for varmint and predator hunting, pronghorn and deer hunting in open country, or for use with sniper rifles. Runs on 1 CR2032 battery (included), and has an auto power shut off to conserve battery life.<br /> Manufacturer model #: 102579.</p><ul> <li>Gives shooters the ability to allow for wind drift</li> <li>Reads wind in various units of measure</li> <li>Great for hunting in open country</li> <li>Compact and portable</li> <li>Quick and easy to use</li> <li>Gives temperature</li></ul>