Accurately measure wind speed 2-89 mph (9-40m/s)
Compatible with iPhone, iPad, iPod with 3.5mm earphone jack socket & running iOS7.1 or later devices
Records the wind speed, wind direction and location
App integrates wind speed with smartphone features wind direction, location, altitude, images
Pocket-Size ,Non-slip surface ,Sealed Stainless steel ball bearings with no lubrication required