Securedigital sd sdhc card memory size 8 gb read speed 19 mbs write speed 16 mbs memory type mlc file format fat32 operating voltage 27 36 v series transcend industrial device class car radio macbook tv dslr digital camera camcorder computer printer functions write protection switch sdhc class 10 operating temperature 40 to 85 c dimensions 32mm x 24mm x 21mm weight 2 g