Whether you're a professional photographer, videographer or enthusiast, the Lexar Professional 1667x SDXC UHS-II card makes it easy to capture and transfer 1080P full-HD, 3D, and 4K video. This card leverages UHS-II (UHS Speed Class 3 (U3)) technology to deliver high-speed performance, up to 250MB/s (1667x). this dramatically speeds up the workflow from start to finish. For added versatility, this card also works with UHS-I devices at UHS-I speeds, and are backward compatible with older cameras and readers, and work at Class 10 speeds when used with non-UHS devices. The card also comes with a limited lifetime warranty.