Stay moving and stay motivated listening to your own music with the Interplay™ Music Dock. Just plug in your iPod or MP3 player and your favorite songs will play through the built-in speaker system. It will even charge your iPod. To keep you motivated over time, it also features an ifit® Fitness Journal that stores your fitness data for up to ten years so you can track all of your fitness achievements. With 24 workouts, sophisticated electronics and more, this heavy-duty elliptical can help you reach your fitness goals and have fun.