The key to the DMT-X1 revolution is its dynamic motion, which works both the upper and lower body and offers adjustability to work more major muscle groups. The motion is natural, conforming to your own movement for superior comfort that keeps your body tone and your joints feeling great. Plus, to keep your workouts progressive and interesting, the DMT-X1offers a back-lit LCD console with eight preset programs, five custom programs and heart-rate control. And, it simply wouldn’t bear the Smooth Fitness name without quality construction and durability you can count on. The frame is made of heavy-duty welded steel in a space-saving design; and the engineering features sealed bearings which mean the operation is quiet and the upkeep, maintenance-free.