Insert this wireless sensor inside the custom, built-in pocket beneath the insole of your Nike+ shoe.Start your workout. As you run or walk, the sensor sends information to your iPod nano, tracking your time, distance, pace, and calories burned. If you choose, real-time, spoken feedback can even alert you to milestones throughout your workout
Back at your computer, sync your iPod nano to transfer your workout data to iTunes and nikeplus. There, you can evaluate your performance history, set goals, and even challenge other runners to a virtual race.
NB. Does not include iPod nano receiver,