FlexDeck shock absorption system reduces impact to your muscles and joints by nearly 30% compared to non-cushioned treadmills, 16 unique workout programs including 5 goal-based workouts, plus My Workouts personal programs and six custom memory slots for you to design your own personalized workout, speed: 0.5 - 12 mph (0.8-20kph), precise interactive heart rate monitoring system with patented Lifepulse contact hand sensors and wireless Polar chest strap, commercial-grade belt and deck and a robotically-welded steel frame that includes a lifetime warranty, ultra-quiet, 4.0 horsepower Magna Drive AC motor featuring a lifetime warranty, Motor Isolation Mount System reduces vibration and overall noise for a quiet, smooth workout, easy-to-use console displays continuous feedback, on-the-fly programming allows you to switch from program to program without losing your stats, deluxe 18-character LED message center. Shipped via truck.