I know about

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Garmin Mobile 10 GPS Navigation

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.. Gramin Mobile 20
Garmin Mobile 20 makes it easy to add GPS navigation and ands-free calling to your Bluetooth-enabled smartphone. To get started, visit our Garmin Mobile Buyer's Guide for pricing, compatibility and to purchase a customized Garmin Mobile 20 package for your phone.
Next, just insert the included data card in your phone, place your phone in the mount and start navigating.
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regards
hank freid