Tomtom runner 3 gps watch with cardiosay goodbye to chest straps with the tomtom runner 3 gps watch with cardio the built in cardio sensor tracks your heart rate straight from your wrist so theres no need for sweaty bands and unnecessary chafing this quality multisport watch provides real time information so you can track your time pace distance calories burnt and heart rate during your workout immediate feedback on your wrist allows you to train efficiently right awaya 247 activity tra