Direct drive trainer with an electro brakeStable frame designNow compatible with long cage derailleurBluetooth and ANT+ FE-C communication capable. Fully compatible with Third-party app like ZwiftMeasure speed, cadence and powerPower measurement accuracy of +/- 3%Maximum resistance of 1500 watt15 lbs flywheelIncline simulation up to 10%Comes with Shimano freehub body. Campagnolo freehub body sold separatelyThru-axle adaptor sold separately