Tomtom runner 3 cardio and music does music get you moving play over 500 songs direct from your tomtom runner 3 gps running watch say goodbye to your chest strap and train with built in heart rate monitoring on your wrist run with music not with your phone play over 500 songs from your watch store your playlists on your watch and play them wirelessly during your run see your heart rate on your wrist track your heart rate with the built in heart rate monitor no chest strap