Ride virtual worlds from home with a smart direct-drive trainer that links to phones, computers, and tablets over Bluetooth 4.0 and Ant+, working seamlessly with Zwift, TrainerRoad, Bkool, MyWhoosh, and Onelap for real-time data and performance tracking. Thirteen levels of electromagnetic resistance adjust by remote to reproduce changing road gradients and dial in training difficulty. Wheel sizes of 26-29 inches and 700C are supported for road and mountain bikes with an 8-11 speed cassette (cassette cog sold separately). A low-noise aluminum alloy shaft reduces friction and vibration to keep the household undisturbed. Carbon steel and aluminum construction, a front wheel riser block, and non-slip foot pads deliver rock-solid stability up to 287 lbs, even during full-power sprints.