The most powerful SD-UHS-I memory card saves valuable time when transferring media files with reading speeds of up to 200 MB/s (from 64GB) thanks to Sandisk QuickFlow technology. In combination with the Sandisk Professional Pro reader for SD and microSD cards, you can reach the maximum speed (available separately). With recording speeds of up to 140 MB/s and UHS Speed Class 3 (U3) you succeed in high-resolution, loss-free 4K UHD video recordings.