Micro sd card micro sdxc card memory size 64 gb read speed 40 mbs bus interface uhs i file format exfat operating voltage 27 36 v series integral ultimapro device class digital camera dslr camcorder tablet pc mobile phone computer printer macbook functions write protection switch manufacturers warranty 5 years standard sd 301 sdhc class 10 uhs speed class u1 adapter sd card adapter operating temperature 0 to 60 c dimensions 15 mm x 11