America's Healthiest Treadmill! This #1 rated treadmill by Health magazine is solid, durable and stable, with a 3.25 HP motor, 20 x 60 running surface, and biomechanically sound deck suspension to comfortably support casual walkers to avid runners up to 350 pounds. Useful features include handlebar controls easily accessible to change speed and incline, chest strap to accurately measure and display heart rate, and exercise programs for Weight Loss, Healthy Living, Sports Training, and Heart Rate Control. The audio center lets you connect your ipod or mp3 to listen to your favorite music on the treadmill's high quality speakers. Safety features like EZ Drop lowers the treadmill deck to the ground softly and lightly, and Intelli-Guard automatic safety pause stops the treadmill belt from moving when no one is walking or running on the treadmill. Personalized online LifeSpan Fitness Club account included with purchase of a TR4000i lets you track and monitor your exercise and health, including workout data from your TR4000i treadmill saved on your USB.