The Lexar Professional 600x SDXC UHS-1 Card is available in capacities of 64, 128 and 256GB, the later being an industry first for this form factor. Performance is listed at sustained 90MB/s read (hence the 600x) and we can give you a heads up that it also pushes a healthy 45MB/s write performance. The card includes a $45 full version copy of Lexar Image Rescue 4 software which will recover deleted and corrupt files from the card and, remarkably, this card comes with a limited lifetime warranty.