i Runner

This unique system works with the iPod Nano to track your running progress. The shoes' embedded accelerometer measures your pace, distance, and calories burned—everything but your heart rate. (Something tells us Jobs and co. are working on that, too.) Once you're done, it'll then send the info via Wi-Fi to nikeplus.com for a cumulative look at your regimen. Oh, and it plays music, too—check out the Original Runs series, which includes iTunes-only albums from LCD Soundsystem and Aesop Rock.

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