The Nautilus T628 Treadmill is designed to help serious runners reach their full potential. It comes with a variety of training programs, the latest app-based tracking tools like the Explore the WorldTM App, and Bluetooth® connectivity—basically everything you need to stay motivated. There are 26 Nautilus Performance Training programs to choose from, including interval, heart rate, and weight loss. Even when the media tray is in use, the dual screens provide visibility to workout metrics. The exclusive ReboundTM Cushioning System softens landing at the front of the deck while also propelling kick-off at the back of the stride to reduce impact and energize the workout. The 3 ply 2.5 mm belt increases traction and durability, resulting in a longer belt life.