Nike+ Apple iPod Sport Kit

Features:

This wireless sensor and receiver combination works exclusively with your Nike+ shoes and iPod nano, iPod touch and iPhone 3GS or later to give you real-time feedback during workouts and let you track your performance on your Mac or PC.

Insert the wireless sensor inside the custom, built-in pocket beneath the insole of your Nike+ shoe, then plug the receiver into the Dock connector on your iPod nano. The iPod touch (2nd generation or later), iPhone 3GS or later, include Nike+ support built in — no receiver necessary.