Set a new personal best with the Tom Tom Runner 3 cardio music large heart rate monitor with headphones & get your feet moving to the beat wirelessly playing over 500 songs from your watch. This multifunctional device lets you check your heart rate on the wrist with the built-in heart rate monitor & offers real-time running information enabling you to track steps, active minutes, distance, calories burnt, & sleep time. There is a multisport mode for training in run, swim, bike, gym & treadmill modes, a GPS tracking system & a race mode that allows for choosing one of your past performances to race against. Upload trails to your watch & never run the same route twice thanks to route exploration feature & improve speed & fitness with custom work-rest sessions using an interval training mode. This waterproof watch with an ultra-thin design comes with Tom Tom Bluetooth headphones providing high quality sound without cables.