from Nike Store:

Think Less, Run Better

Put on your Nike+ SportWatch GPS, go outside and run. Tap the screen to mark laps and activate the backlight during your run, and personalize the data that you want to see during your run. For direct connect, USB contacts are built into the watch strap—just plug the watch directly into a USB port on your computer to upload run data and recharge the battery.

Enhanced Accuracy

Using GPS by TomTom with the Nike+ Sensor, you can start tracking your run instantly, and get accurate speed and distance information, indoors or out—even if the GPS signal gets interrupted. The Nike+ SportWatch GPS by TomTom tracks your time, distance, pace, heart rate and calories burned. It also shows your mapped route, with pace data, and changes in elevation on Nikeplus.com. And it’s heart-rate monitor compatible with the Polar Wearlink+ Transmitter.

You’ll Never Slack Again

View your Nike+ history (up to 50 runs) and PRs, and set automatic Run Reminders when a run hasn’t been logged in the past five days. Run a personal best, receive an Attaboy. You can also find new routes, set personal goals and access training programs on Nikeplus.com.

Additional Details:

• English interface only
• Weight: 2.33 ounces
• Nike+ Sensor, quick-start guide and USB cable (for hard-to-access USB ports) included
• One-year limited warranty