The Adidas miCoach Pacer: Your personal, innovative training system! The Pacer gives audible exercise instructions in real time, so that you know exactly when you need to run faster or slower (colour zones). In combination with the measurement of the heart rate, speed and distance, the miCoach Pacer is the perfect personal trainer. You can monitor your training progress after each unit, carry out a detailed running analysis and receive online feedback. Compatible with any MP3 player!