Lexar professional 1000x microsdhcmicrosdxc uhs ii cards let you quickly capture play back and transfer multimedia files including 1080p full hd 3d and 4k video with a read transfer speed up to 1000x 150mbs1 the cards leverage uhs ii technology uhs speed class 3 u3 for high speed performance and include a microsd uhs ii usb 30 reader for high speed file transfer