Nike is revamping it’s ipod add-on to add quite a few new bells and whistles. Additions include temperature + hydration monitors. Our past complaint about it being primarily a pedometer, missing a heart rate monitor as a very basic requirement, seems to be addressed here as well.

There is also some talk of GPS. We’re already enamored of Garmin’s Forerunner watch, which is a phenomenal training device, all around. I’d like to see how these hydration and temperature sensors work, and keep an eye on Garmin’s additions as well.

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