The SanDisk Extreme PRO CFast 2.0 memory card delivers the high performance broadcast, cinema, and photography professionals demand today. The card has the speed, capacity and performance needed to record cinema-quality 4K video (4096x2160p) . It delivers write speeds of up to 450MB/s (128GB-256GB), 340MB/s (64GB) and data transfer speeds, up to 525MB/s. With a video performance guarantee of 130MB/s (VPG 130) and 64GB, 128GB to 256GB of storage capacity, this is a great memory card for professional cameras and camcorders. Our second generation CFast card, the SanDisk Extreme PRO CFast 2.0 memory card was designed in collaboration with leading camera manufacturers to ensure an exceptional user experience from the first shot.SanDisk products are constructed to the highest standards and rigorously tested. You can be confident in the outstanding quality, performance and reliability of every SanDisk product.