Nike+ - SportWatch GPS Powered by TomTom Lithium-polymer battery USB cable TomTom GPS + Shoe Sensor Owner's manual One year warranty on parts and labor Measures your time, distance, pace and calories burned Compatible with Polar Wearlink + transmitter devices (not included) Personal coach keeps you motivated GPS Run reminders keep you on schedule Stopwatch feature Backlit display Tack route data, including mapped routes with pace and speed data and changes in elevation on NikePlus.com (additional fees may apply) Low battery detection (battery life 8hrs) Water resistant iPod sensor tracks workouts and fits inside Nike+ footwear