APR has created a miniature Time/Speed/Distance computer that is completely accurate and fully functional. The computer’s top dial rotates to show speed, time to the fix, knots or miles to go, and fuel problem solutions.

And there’s more... In case you don’t complete your flight plan before take off, you can safely and easily use the back side of the keychain computer to guide you through the required sequence once you’re en route. PVC plastic. 1 1/2” Dia.