Garmin GPSMAP 378 Car GPS Receiver - Go from box to boat to dash with the portable and versatile GPSMAP® 378. This combination color chartplotter and land navigator comes preloaded with maps for lakes throughout the continental U.S., in addition to detailed street-level mapping. Optional weather and sonar capabilities combined with the ability to conveniently add plug-in data cards, let you easily add more maps and features — making this one incredible GPS navigator for land and freshwater.
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