Dragy Universal GPS Based Performance Meter - DRG69Monitor your 0 60mph, 60 130mph, 100 200kmh, 1 4 mile, 1 2 mile performance, and more! Dragy uses high speed GPS satellites to accurately measure your vehicles performance within 1 100th of a second, producing identical results to the much more expensive and cumbersome VBOX system, in a less expensive and easier to use package. The Dragy software automatically charts slope on all timeslips which you can then post to forums or social media, share with