WFANO-02e
The Weatherflow WEATHERmeter is a highly accurate handheld device used with your smartphone to measure wind, temperature, humidity and pressure. The device connects wirelessly up to 100 feet away. Record weather data in a variety of compatible apps including the free Wind & Weather Meter app and share reports instantly via email, SMS, Twitter, Instagram, and more. 

The WEATHERmeter obtains the direction heading from the connected mobile device's compass heading, not from an internal magnetometer. The WEATHERmeter for Precision Shooting is the only meter that includes an internal compass.