Securedigital sd sdhc card memory size 8 gb read speed 24 mbs write speed 17 mbs file format fat32 operating voltage 27 36 v series delkin pro device class car radio macbook tv dslr digital camera camcorder computer printer functions write protection switch sdhc class 10 operating temperature 25 to 70 c dimensions 32mm x 24mm x 21mm weight 2 g