While many different types, styles, and price ranges of treadmills exist, many of them offer unique features like a fold-up design for easy storage, an electronic display monitor showing speed, distance, workout time, incline level, and burned calories, and EKG grip pulses to monitor the heart rate while exercising.
https://www.amazon.com/Sole-Treadmill-2009-2010-Model-DISCONTINUED/dp/B001G60JA8

