The F63 treadmill has been reviewed as “The best treadmill in its price range”. The strong, 3.0 Cont. Duty HP motor delivers challenging speeds up to 12 mph and inclines up to 15-Percent. When not in use, the treadmill deck safely locks into place, 100-Percent secured. Other safety features include a large stop switch, starts from only 0.5 mph and low-profile running hood. This offers six preset programs, 2 user defined programs and 2 heart rate control programs for a great workout. Additonal features include cooling fans, speed and incline controls, and built-in speakers which allow you to hook up any MP3 player, iPod, etc. for easy listening.