Securedigital sd sdxc card memory size 64 gb read speed 285 mbs write speed 100 mbs bus interface uhs ii mode of transmission uhs312 file format exfat operating voltage 2 7 3 6 v series delkin 1900x suitable for 360 recording sports photography full hd recording 3d recording 4k recording device class macbook dslr digital camera printer camcorder functions write protection switch standard sd 410 sdhc class 10 uhs speed class u3 adapter