Samsung electronics offers an 8gb microsd [secure digital] memory card-a size optimal for today`s multimedia mobile photos or approximately five dvd quality movies. Some of the technical features of these 8gb microsd memory card include: this memory card is provided with a read speed of 16 mb/s and a write speed of 6 mb/s, the card exceeds the speed class 4 sdhc [secure digital high capacity] standard, which requires a data-write speed of 4 mb/s.