Flexdeck Shock Absorption System Our patented system reduces knee and joint stress by up to 30% more than exercising on non-cushioned surfaces, decreasing the chance for injury and keeping runners feeling great on or off the treadmill. State-of-the-Art Motor Powerful 3 HP AC motor with Magna Drive™ motor controller (6-horsepower peak) ensures a smooth workout while being remarkably energy efficient Fully Welded Frame Proven Life Fitness components are solidly welded by expert treadmill craftsmen, ensuring a durable machine that is reliable over time. Heart Rate Monitoring Lifepulse™ digital heart rate monitoring hand sensors are conveniently placed on the Ergo™ bar to provide accurate heart rate monitoring and Polar® telemetry provides hands-free heart rate monitoring when used with an optional chest strap Intuitive Console Clear, simple controls offer exercisers clear direction for quick start or pre-programmed workouts, and the workout summary provides valuable feedback Easy to Use T