Securedigital sd sdxc card memory size 64 gb read speed 90 mbs write speed 40 mbs bus interface uhs i file format exfat operating voltage 27 36 v series sandisk extreme suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class digital camera dslr camcorder printer macbook labeling field functions write protection switch manufacturers warranty 30 years standard sd 301 sdhc class 10 uhs spee