Lexar Professional 64GB 1667x UHS-II SDXC Memory Card (2-Pack)The Lexar Professional 1667x SDXC UHS II Card lets you quickly capture and transfer high quality photos, including 1080p Full HD, 3D, and 4K video, with a read transfer speed up to 250MB s (1667x). This card leverages UHS II technology (UHS Speed Class 3 (U3)) for high speed performance. This dramatically accelerates workflow from start to finish. For versatility, the card also works with UHS I devices at UHS I speeds, and its backward compatible with