This powerful treadmill features a new 2.5 HP DC motor which allows this unit to deliver a superior performance for the exercise aficionado. User-friendly with highly advanced features, the QuickStart function allows runners and walkers the option to start up a workout immediately, starting at 0 mph and working their way slowly to 0.5 mph. There are hundreds of pre-programmed fitness training options with this unit, with ten pre-set programs including the WalkFit Test and a personal trainer studio which allows trainers to store their client’s important exercise metrics and customize exercise regimens based on the data that the Star Trac TR4500 gives them. There is a patented cushioning system that lessens the impact on the ankles, knees, hips and back for a safer, effective workout. The precise display gives readouts of time, distance, incline, calories along with heart rate control. This is a top of the line machine for both the commercial and home gym setup.