Up to eight times faster than ordinary memory cards to catch your best shots and get the video recording performance for 4K Ultra HD and Full HD video. Available in storage capacities from 16GB to 64GB with read speeds up to 90MB/s to move files fast, these cards are compatible with SDHC; or SDXC supporting devices and come with a lifetime warranty. UHS Speed Class 3 (U3) delivers the super-fast speed you need to take your videos to next-level of resolution. SDXC memory card. 64GB capacity. Read speed 90MB per sec. Write speed 40MB per sec.