Music Sporty Recorder Record the exerciser's related data such as exercise steps, time, distance, number of laps, average speed, calorie consumption, heart rate and VO2Max. That could be used to user to listen to the music while you are doing the exercise. That could be used to user to listen to the radio while you are doing the exercise. In the meantime, it also could be recorded the program. That could be used to recorder the radio and voice. Package includes heart rate transmitter and G-Sensor.