This exercise machine's powered-foot platforms rise and fall automatically at your preferred pace, providing an effective, low-impact workout of brisk walking to help improve cardiovascular health and lower body strength. The constant movement of the foot pedals ensures that you maintain the desired speed for the entirety of the workout; as little as 20-minutes will help tone the gluteus maximus, quadriceps, and calf muscles without causing undue stress on joints and muscles. The base rotates left to right as you stride, isolating hard-to-reach oblique muscles that are neglected by traditional steppers, and the integrated pulse sensor monitors heart rate. You can adjust the speed from a slow walk to a brisk jog at the touch of a button, initiate a program that shifts between three speeds intermittently, or select a workout that automatically adjusts the speed in accordance with your heart rate. Large foot pedals have non-skid surfaces and the padded handlebars are easy to grip. The LCD control panel displays exercise time, calories burned, steps taken, and speed, and the device allows you to save exercise settings and results for up to four people. The unit folds to 1/3 of its 4 1/2' operational height. Supports up to 220 lbs. Plugs into AC. 55" H x 23" W x 31 1/2" D. (84 lbs.)