Dragy uses high speed GPS satellites to accurately monitor your 0-60mph, 60-130mph, 100-200kmh, 1/4 mile, 1/2 mile performance, and more! The Dragy software automatically charts slope on all timeslips which you can then post to forums or social media or share with friends. Requires iOS (8.0) or Android (4.4) devices. Powers up through a Bluetooth connection and charges using a simple USB cord.  Beefcake Racing is an Authorized Dealer for Dragy and we keep them in stock, call 1-855-827-7223