Casio introduced the first GPS watch in 1999, but the watch was rather large and heavy for an athletic watch. Since then other companies have come out with their versions each one getting smaller and more advanced. Casio is back to re-claim the throne though releasing the GPR-100, the world's smallest GPS watch.

The watch has a GPS reception antenna of only 19mm, and a GPS module of only 11mm. And weighing in at only 64 grams this watch won't slow you down.

Via Mobilewhack from Casio

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