Lexar Professional 2000x 64GB SDXC UHS-II Memory Card, 300MB/s Read, 260MB/s Write (2-Pack)The Lexar Professional 2000x 64GB SDXC UHS II Memory Card quickly capture and transfer high quality photos and extended lengths of Full HD and cinema quality 4K video, with a read transfer speed of up to 300MB s (2000x). The cards also leverage UHS II technology (UHS Speed Class 3 (U3)) for high speed performance, so you'll power through post production with super fast file transfer from card to computer. Shoot High Quality Images and Stunning 4K