Change the way you build your cardiovascular fitness with the Sunny Health & Fitness SF-T7724 Energy Flex Motorized Treadmill. Run on the space-saving running deck (51.5L x 18W in) that is equipped with a responsive shock absorption system. The cushioned belt on the flex treadmill absorbs impact on each step, which can reduce stress on your lower-body joints as you exercise. Designed for both walking and running, this indoor treadmill can achieve speeds between 0.6 MPH and 10 MPH. Control your workout intensity with 15 levels of automatic incline. Track your cardiovascular performance with the built-in pulse sensor grips. Use the back-lit, color performance monitor to track your speed, time, distance, calories burned, pulse, and incline level. Customize your workout experience with 3 countdown workouts, 3 user-customized workouts, BMI calculator and 16 pre-set programs. Enjoy convenient quick buttons that control speed and incline.