Securedigital sd sdxc card memory size 64 gb read speed 95 mbs write speed 85 mbs bus interface uhs i file formats fat32 exfat operating voltage 27 36 v series transcend extreme suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class macbook tv dslr digital camera camcorder printer tablet pc sdhc class 10 uhs speed class u3 operating temperature 25 to 85 c dimensions 32mm x 24mm x 21mm