Wifi sd card sdhc card securedigital sd memory size 8 gb read speed 10 mbs write speed 10 mbs file format fat32 operating voltage 27 36 v series toshiba flashair device class car radio macbook tv dslr digital camera camcorder computer printer functions write protection switch sdhc class 10 adapter without adapter operating temperature 25 to 85 c dimensions 32mm x 24mm x 21mm weight 2 g