The Tom Tom Runner 2 cardio music small heart rate monitor is an easy-to-use device designed to provide real-time running information & let you listen to high energy, motivating music while working out. Boost each workout with your favourite music & improve overall fitness level with this finest top quality fitness watch featuring a built-in heart rate monitor, a multisport mode, 24/7 activity tracking function & GPS tracking. It offers 5 different heart training zones enabling you to get results faster & allows for training in a bike, swim, gym & treadmill mode. The Runner 2 has music storage for over 500 songs & streams music to a wide range of Bluetooth headphones. The race mode means that you can choose one of your past performances to race against, whereas the audio performance feedback helps to push yourself harder & increase sports performance.