Dragy is a GPS Based Performance meter. This is to be used with your Google or Apple based phone using the free Dragy app, which can be downloaded from the Apple store or Google Play. This connects to your cellphone using a Bluetooth connection.;GPS Based Performance Meter;Track your 0-60 mph, 60-130mph, 0-130mph, 1/4 mile, and 1/2 mile performance with Dragy.;Whats more;Leaderboard, Performance Report, and Dragy feed.;Drag Video;Record your racing with real time speedometer and performance report!;How it Works;Testing your vehicles performance and analyzing from your smartphone has never been that easy.;GPS connection with A-GPS 2 seconds. Performance definition 0.01 Sec. 10 hour battery life. Bluetooth 4.0 high speed module.;Dragy has a 10Hz GPS + GLONASS Module, Bluetooth 4.0 Module, build-in battery, and strong magnet.