Small but accurate tool that allows you to transform your device into a useful information detector for everyday navigation. It works with iPhone, iPad, iPod, and Android Smartphone/Tablet but requires minimum operating systems iOS 6.0 or Android 4.3. It plugs directly into the audio jack and is ready to use. Maximum error ± 0.5% or 0.1 m/s. Range from 0.1 to 56 m/s. Scale in m/s, Beaufort, knots

Small but accurate tool that allows you to transform your device into a useful information detector for everyday navigation. It works with iPhone, iPad, iPod, and Android Smartphone/Tablet but requires minimum operating systems iOS 6.0 or Android 4.3. It plugs directly into the audio jack and is ready to use. Maximum error ± 0.5% or 0.1 m/s. Range from 0.1 to 56 m/s. Scale in m/s, Beaufort, knots, mph. Stores wind speed (average and max) and direction. Shockproof rubber coating.