PaceBoss is the world's first sophisticated audio biofeedback system. The system will advise you when to adjust your pace, and if you don't comply, the system will advise you more insistently. This will go on until the system feels that you simply won't comply, at which point PaceBoss will advise you that's it giving up and begins monitoring you at whatever pace your moving at that time - just like a human being. But, the best value with PaceBoss is the celebrity voices. What could be more motivating than to be guided through your exercise regimen by the very person who most inspires you in life?