Securedigital sd sdxc card memory size 64 gb read speed 25 mbs bus interface uhs i file format exfat operating voltage 27 36 v series hama high speed gold device class car radio macbook tv dslr digital camera camcorder computer printer functions write protection switch manufacturers warranty 10 years standard sd 30 sdhc class 10 dimensions 32mm x 24mm x 21mm weight 2 g