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Question: Can the Megellen eXplorist 510 work in Afghanistan?

can anyone tell me authoritatively if the Magellen eXplorist 510 has maps and can be used effectively in Afghanistan? i am an Army officer serving in Afghanistan and would like a reliable backup navigation device. the eXplorist 510 says it has 'global maps' but i'd like to be sure before i buy - awfully difficult to return from Bagram! ;-)