Even without taking into account the unique, astonishing way it wirelessly connects with a smartphone, the Vaavud wind meter is pretty neat little gadget.
It will measure wind speeds up to 25 meters/second (the Vaavud is Danish, hence the metric measurements and strange name), can share recorded data with the world through its free app—and it’s been tested for accuracy in a wind tunnel.
But the real stunner about the Vaavud is that it doesn’t use Bluetooth, Wi-Fi or any other power-draining wireless radio to connect. Instead, it uses magnets.
While theoretically any phone with a magnetometer should be compatible with the Vaavud, it’s only been tested and calibrated with the most common models: the iPhone 4/s/5, iPads 2 and 3 and the Samsung Galaxy S2 and S3.
You can get one starting today for $45 at BiteMyApple.