Securedigital sd sdxc card memory size 64 gb read speed 90 mbs write speed 80 mbs bus interface uhs i mode of transmission uhs104 file format exfat operating voltage 2 7 3 6 v series siliconpower superior pro suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class macbook dslr digital camera printer camcorder labeling field functions write protection switch standard sd 301 sdhc class 10 uhs