Designed for SD devices that can capture Full HD, 3D, and 4K video, as well as RAW and burst photography, the 64GB Extreme PRO UHS-I SDXC Memory Card from SanDisk has a capacity of 64GB, is compatible with the UHS-I bus, and features a speed class rating of V30, which guarantees minimum write speeds of 30 MB/s. If your device does not support the V30 standard, this card also supports the U3 standard, which also guarantees minimum write speeds of 30 MB/s. Read speeds are supported up to 95 MB/s and write speeds max out at 90 MB/s.
 
https://www.bhphotovideo.com/c/product/1276278-REG/sandisk_sdsdxxg_064g_ancin_extremepro_sdhc_64gb.html