Northeast - info needed on Garmin 640 GPS

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View Full Version : info needed on Garmin 640 GPS

Cobalt 25
02-18-2010, 01:58 PM
Anybody out there have any info on a Garmin 640? Principal use would be as a portable marine unit with a beanbag mount. Comparing this to the Garmin 276, do the updated features on the 640 justify the cost?

Any input appreciated.

thanks, Peter

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