Smartphone v2 Wind Meter by Vaavud

Vaavud V2 Wind Speed/Direction Meter f/Smartphones – GreyThe Vaavud wind meter turns your smartphone into a high-tech meteorological toolWith the Vaavud Sleipnir wind meter you can take accurate wind readings, at wind speeds from 1-40 m/s , with a precision of 4%, AND measure the wind direction with a precision of 10 degreesIt comes with a practical neoprene bag so you can take it with you anywhere.Works with the following devices: iPhone 5S, 5C, 5, 4S, 4 iPad 2, 3rd and 4th generation mini and Air Samsung Galaxy S5, S4, S3HTC OneGoogle Nexus 4 & 5 Droid RAZR m