The rugged Nike Sportwatch GPS is a wrist-worn fitness watch. that tracks your location. pace. calories burned. and lap intervals. The watch acts as a personal running coach setting reminders and insights based on your goals and activity. When worn in conjunction with the Polar Wearlink . the Sportwatch GPS can also track your heart rate throughout your run. The backlit LCD display shows all your metrics in real time. and the watch can also be connected to your computer via USB to sync your stats. The Sportwatch GPS also features NikeFuel. a universal whole-body movement metric designed by Nike.