Ideal for athletes, the TomTom Nike + SportWatch GPS has an integrated GPS receiver that works in sync with the shoe-based Nike+ sensor to calculate your pace and distance while running. You can also track your heart rate and calories burned with the TomTom GPS receiver. This water-resistant GPS receiver has a display resolution of 168x144 pixels, letting you clearly view your run history of up to 50 runs. Plus, the personal coach feature on this TomTom GPS receiver lets you set reminders and records of your personal data. A rechargeable lithium polymer battery in the TomTom Nike + SportWatch GPS gives you a run-time of 8 hours. What�s more, this sturdy water-resistant GPS receiver can operate between temperatures of -20 to +60 degrees Celsius. So, just strap on the TomTom Nike + SportWatch GPS and run your way to good health.