Quickly capture and transfer high-quality photos and 1080p Full-HD 3D and 4K video with a read transfer speed up to 2000x (300MB/s). The cards leverage UHS-II technology (UHS Speed Class 3 (U3)) for high-speed performance. And with the included SD UHS-II card reader you ll power through post-production with high-speed file transfer from card to computer. Using a DSLR cinema-quality video cameras or 3D camera you ll be able to leverage the latest photo and video features available for shooting high-quality images and stunning 1080p Full-HD 3D and 4K video. For versatility the cards are also backwards compatible with UHS-I devices performing up to the maximum thresholds of UHS-I speed capabilities. The cards also work with older non-UHS-I devices performing at Class 10 speeds. All Lexar product designs undergo extensive testing in the Lexar Quality Labs facilities with more than 1 100 digital devices to ensure performance quality compatibility and reliability.