Storage capacity of the garmin zumo 660 gps unit
Folks, I have inherited a Garmin Zumo 660 GPS unit. From information gathered on this site, the 660 will still do a RTW trip, even though it is a bit dated now ( so am I but I like to think I can still manage!) once the maps are downloaded. I know very little about the unit but am studying up using manuals and websites to fill in the gaps in my knowledge.
My question is ...... can I download all the maps of the world (road) using a micro SD card with a greater capacity than 4Gb if I need the greater memory capacity? 4Gb is the extent of the internal memory, so I probably can't (know little about computers). Opinions please. If 4Gb is the limit, do I have to discard maps I no longer need and import the ones I need for the leg of the trip I am completing? I hope I can still import maps from the new site (OSM I think it is now). Thanks in anticipation.
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