Rock your workout and reach your goals with the ProForm Trainer 420. Plug in your iPod and work out to your favorite beat thanks to Interplay™, the music port that's compatible with virtually any MP3 player. And, with 6 built-in workouts, each designed by a Certified Personal Trainer, you'll get the expertise you need to reach your goals fast. The Trainer 420 is also equipped with a dual-grip EKG™ heart rate monitor, a powerful 1.5 CHP drive motor and the protection of ProTech™ cushioning, which reduces impact on your joints by 15% as compared to road running. Other features available include a CoolAire™ workout fan and a 5-year motor warranty.