Dragy Universal GPS Based Performance Meter - DRG70Monitor your 0 60mph, 60 130mph, 100 200kmh, 1 4 mile, 1 2 mile performance, and more! The 10th generation ublox chip, which supports 4 GNSS (GPS, GLONASS, Galileo and Beidou)! Dragy uses high speed GPS satellites to accurately measure your vehicles performance within 1 100th of a second. The Dragy software automatically charts slope on all timeslips which you can then post to forums or social media, share with friends, or even upload to the Dragy