Have more with MicroSD cards of different manufacturers gehat problems in navigation devices from Garmin and Navigon among others, this standard Samsung card works perfectly. It should be borne in mind that in all my smartphones and navigation devices Samsung is the only brand that easily is working in all of my devices. Use the 8GB card currently in my Garmin Dezl 760LMT-D without a single problem, and it brings absolutely nothing to take a faster Map: Navigation devices use at all the higher read / write speeds. Also to be borne in mind that a card with 8GB capacity is fully sufficient for a navigation device.
Important: Even though the card is formatted prior-already FAT32 can you, as with all cards, for safety's sake reformat itself again the card before taking the card in use in order to do so by the software I use Panasonic SD Formatter.