Securedigital sd sdxc card memory size 64 gb read speed 95 mbs write speed 60 mbs bus interface uhs i file format exfat operating voltage 27 36 v series transcend ultimate suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class macbook dslr digital camera camcorder computer printer tablet pc sdhc class 10 uhs speed class u3 adapter without adapter operating temperature 25 to 85 c dimens