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, at read transfer speeds of up to 250MB/s (1667x). This card uses UHS-II technology (UHS Speed Class 3 (U3)) to achieve high-speed performance. This significantly speeds up the workflow from start to finish. With a DSLR camera, HD camcorder or 3D camera, you can use the latest photo and video features to capture high-resolution images and impressive 1080p Full HD, 3D and 4K video. More and more cameras support recording of HD, 3D and 4K video. That's why you need powerful cards you can rely on and high capacity to shoot longer without changing cards. A Lexar Professional 1667x SDXC UHS-II card is the ideal solution with UHS Speed Class 3 and capacities up to 256GB. The high-speed performance of Lexar Professional 1667x SDXC UHS-II cards accelerates your workflow end-to-end, so you can save time and move quickly to the next subject. For added flexibility, the cards are also backward compatible with UHS-I devices that operate up to the maximum UHS-I speed limit. The cards can also be used in older non-UHS-I devices at Class 10 speeds. All Lexar product designs undergo extensive testing in Lexar Quality Labs, facilities with more than 1,100 digital devices, to ensure performance, quality, compatibility, and reliability.