Securedigital sd sdxc card memory size 256 gb read speed 150 mbs bus interface uhs ii file format exfat operating voltage 27 36 v series lexar professional suitable for 4k recording full hd recording 3d recording sports photography device class macbook tv dslr digital camera camcorder printer tablet pc manufacturers warranty 10 years standard sd 40 sdhc class 10 uhs speed class u3 dimensions 32mm x 24mm x 21mm weight 2 g