The Rock and Roll | Smart combines the world's only free-moving fluid trainer with intuitive app-based power training. No other trainer delivers a more realistic experience and cycling-specific core workout. The pre-installed inRide sensor technology allows riders to connect with world of training possibilities with apps like Kinetic Fit, Zwift and Trainerroad on any Bluetooth-connected smart phones, tablets and laptops. No additional sensors or add-ons are needed. Enjoy real-road feel from the precision-calibrated fluid resistance unit and access a online training tools, content and power data - all at your fingertips. All backed by the industry's best warranty.