The tomtom runner 2 cardio music large heart rate monitor is a highly versatile gps watch designed to help you boost fitness performance while listening to your favourite music this ultra slim lightweight multisport watch allows for training in bike swim gym and treadmill modes and gives you accurate heart rate information on your wrist it has 3gb of music storage and enables you to listen to over 500 songs directly from your watch the device is waterproof up to 40m 130ft and offers gps