Our most powerful SD UHS-I memory card saves you time transferring media with read speeds of up to 200MB/s powered by SanDisk QuickFlow technology. Pair with SanDisk Professional PRO-READER SD and microSD for maximum speeds (sold separately). With shooting speeds of up to 90MB/s and UHS Speed ​​Class 3 (U3) recording, you'll be ready to capture stunning, high-resolution, stutter-free 4K UHD video.