SportsArt ECO-NATURAL™ line is the embodiment of design, technology, sustainability, and cardiovascular excellence. The sleek angles and premium features combine with a state of the art motor to produce the most engaging and energy saving workout that users can feel good about. The T656 is our top of the line treadmill with -3 to 15% incline range, 0.1 to 15 mph speed range, ECO-DRIVE™ motor that uses 32% less energy than a standard motor.