TomTom Runner GPS w/HRM gives you pace, distance and heart rate data to help track your run fitness. This simple-to-use watch features a large display and a 4-sided button to easily navigate menus. Find satellites quickly when ready to run with QuickGPSFix. Set custom intervals or race against your previous workouts in Run mode. Track pace and distance on the treadmill thanks to a built-in accelerometer. Plug into your computer or connect wirelessly via iPhone with Bluetooth Smart to upload data on TomTom's MySports online account, or 3rd party sites like MapMyFitness.