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Proporta keychain GPS receiver

Just 5 years ago, hardly anyone had heard of GPS (Global Positioning System). The prices of GPS receivers have fallen dramatically. The physical size of GPS receivers have gotten smaller, too. The Proporta Freedom is the smallest I’ve seen so far, in fact it fits right on your keyring. This little gadget is a SiRF Star III-equipped receiver and will connect with the standard 20 satellites.

The price : a reasonable US$130.

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