Micro sd card micro sdxc card memory size 64 gb read speed 10 mbs write speed 10 mbs bus interface uhs i memory type mlc file format exfat operating voltage 27 36 v series transcend extreme speed device class tv digital camera dslr camcorder car radio computer tablet pc mobile phone printer macbook functions write protection switch sdhc class 10 uhs speed class u1 adapter sd card adapter operating temperature 25 to 85 c dimensions 1