The microsdhc memory cards are designed specially for mobile phones this tiny memory card consumes very little powerr key featuresr r r capacity 8gbr write speed 4mbsecr read speed 4mbsecr r r currently the smallest form factor of memory card available the microsdhc memory cards are designed especially for mobile phones this tiny memory card consumes very little power therefore preserving the battery life of your mobile phone it can also be used in gps devices mp3 players digital