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Garmin GPSMAP 521

Garmin GPSMAP 521

The GPSMAP 521 is a compact chartplotter that features an Read more

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Reviews and Problems with Garmin GPSMAP 521

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Overall 2

521s with latest software Won't Read SD Cards larger than 2GB

Marina Owner, Amazon
23 March 2013
  • Summary: First off let me say that until my experience with this 521s Garmin, I have been a loyal Garmin advocate. That has now changed thanks to my August through September 2014 experience with this Garmin unit and the Garmin factory technical support.
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