Kinetic Rock and Roll Smart Bike Trainer Quiet, smooth, progressive resistance provided by Kinetic's patented fluid resistance unit.Works with Kinetic Fit, Zwift and TrainerRoad on Bluetooth-connected smart phones, tablets and laptops Patented frame design provides the most realistic ride available and a cycling-specific core workout Every Smart Trainer purchase includes a FREE 1-month subscription for the Kinetic Fit power-training app Compatible with virtually all bikes, from 24" to 700c to 29" mob wheels.Fully assembled