Securedigital sd sdxc card memory size 64 gb read speed 50 mbs write speed 35 mbs file format exfat operating voltage 27 36 v series patriot ep suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class car radio macbook tv dslr digital camera camcorder computer printer functions write protection switch sdhc class 10 dimensions 32mm x 24mm x 21mm weight 2 g