Securedigital sd sdxc card memory size 256 gb read speed 90 mbs write speed 60 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 computer tablet pc printer macbook labeling field functions write protection switch software included rescuepro manufacturers warranty 30