WeatherFlow Precision Shooting Wind Meter for Smart Phone<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Wind Speed</li><li>Wind Direction</li><li>Plugs into 3.</li><li>Calibrated by University of Florida Aerospace Engineering</li></ul></div><img src="http://ecx.images-amazon.com/images/I/31f4ntgKucL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51aBI9v4uoL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/51wHlLWlljL.jpg" noproxy><img src="http://ecx.images-amazon.com/images/I/41XAxtwcWnL.jpg" noproxy>