610 is a big improvement over 305 and 405
So far I really like my new watch. Took it out for a couple runs and it downloads the data as I walk in the door (it vibrates to let you know when it links to the computer). It is great to be able to see and share the information on the internet. All the other runs from my 305 and 405 are in the new training center software along with my new 610 runs.
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