Rehab 4.0U Upright Bike Cordless convenience with self-generating power 40 levels of resistance Built-in cooling fan 11 preset programs and built-in heart rate monitoring Fully adjustable high-density foam seat Designed for ultimate comfort and convenience, the Rehab 4.0U Upright Bike offers cordless freedom and self-generating power. With 40 levels of resistance and a built-in cooling fan, this bike provides a customizable workout experience. Plus, with 11 preset programs and built-in heart rate monitoring, you can easily track your progress. And, thanks to the fully adjustable high-density foam seat, you'll always find the perfect fit for your body.