0 to 15% Automatic Incline: Taking the incline up to 15% is a great way to work your quads, glutes, hamstrings, and calves, whether you run or do a brisk inclined walk. Just 10 minutes at maximum incline and your quads will be burning!. 3.25HP Ultra-Quiet Motor: The quiet-running electric motor produces 3.25hp, which is on a par with many professional (non-portable) gym treadmills. This allows you to run at speeds of up to 9 mph (14.5 km/h), which is plenty fast even for athletes.. 3.9ft x 1.41ft Two-Tier Running Belt: Running can be a strain on your knees, but with its innovative two-tier running board and shock-absorption system, this ancheer treadmill won't cause any undue strain on your joints. Run for as long as you like in total comfort on the wide 3.9ft x 1.41ft running surface, which is able to support up to 300 lbs.. Bluetooth Connectivity & App Control: Connect your phone or tablet to enjoy your favorite media via Bluetooth and the speakers delivers vibrant stereo sound. The integrated FitShow app allows you to select custom routines and compete with others.. Clever Foldable Design & Large LCD Screen: The sophisticated soft-drop system allows you to gently and elegantly unfold the electric treadmill with a simple press of your foot. The large central console gives you all the info you need while running, including speed, time, distance, calories burned, and heartrate. All our folding treadmills with auto power incline are quality-assured and we offer full product protection for a whole year..