The latest MP3 player from Genius, MP3-DJ Sport, is designed for people who want to listen to mp3 music when they exercise. Just attach the MP3-DJ Sport to the arm strap when you are jogging or running. It includes a pedometer and calorie calculator function. When you exercise, you can turn on the sport function, input your physical data, like weight, height, age, etc., the pedometer will counting your step and calculate the calorie consumption when you are jogging. This makes it easy for you to keep track how your body is reacting to the exercise you are giving it. The MP3-DJ Sport also has a FM radio, long time voice recording, and one AAA alkaline battery to work up to ten hours. This is going to be the MP3 player that people want to use when they are running or jogging.