The Vaavud Sleipnir is designed to capture wind speed and direction using two curved blades. Meanwhile, The internal optic sensor records 44,100 measurements per second allowing for extreme accuracy.

2-40 m/s wind speed with 4% precision 
Wind direction with + - 4% precision
0,1 m/s of resolution
Omnidirectional
Built in electronic sensor
Rugged
22x45x83mm 
14 grams