No contact points, no friction, no noise, no wear. That's the advantage of the silent magnetic resistance system of the NordicTrack SL 705 cycle. It lets you change your resistance level at the touch of a button. The CardioGrip™ heart-rate monitor shows fast and simple readings of your pulse and can even make automatic adjustments to resistance as your heart rate changes. Eight workout programs give you plenty of options for a variety of fitness goals and the CoolAire™ fan helps keep you invigorated while you exercise. All features and systems are self-generated without any cords or outlets.