For 99.999% of the time those two states are all I need. The only real drawback of the microSD card is being limited to two states.
The card isn't locked to the unit, but a copied card will not work and that's how Garmin protects it from unauthorized duplication. I also like that I can move the microSD card to any Garmin mapping unit that supports microSD cards. What I really like about the mircoSD card is that the topo and roads are merged together so you don't have to hide or show maps to see one or the other. It autoroutes just like CN does with the added benefit of autorouting on trails too if you happen to have the trail showing on the map. Yes it has POIs and you can look up addresses, and it covers the cities too. Is that how you interpret it? But then I just remembered that CNNA has the ability to look up addresses and create an autoroute to that address from present location, can 24k Topo do that? Does it exclude cities? I'm thinking, if I were to get the 24k Topos, with their road navigation, the only difference between them and CNNA would be the POIs that CNNA has.
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