Tomtom runner2 cardio music gps watch take over 500 songs of musics at your wrist with 3gb of storage phoneless and wireless plus a built in heart rate monitor that does not need a separate chest strap audio performance feedback allows you to concentrate on running and get information on how you are doing as you are running change modes so you can train and track during run bike swim gym and treadmill activities features ultra slim lightweight watch designed for runners and