Designed for high bit depths, frame rates, and resolutions, including Full HD, 4K raw, and 3D video, as well as raw and continuous burst photography in DSLR and drone systems, the 256GB AV Pro MK2 UHS-II SDXC Memory Card from Angelbird features a storage capacity of 256GB. It takes advantage of the UHS-II bus to support sustained read speeds of 260 MB/s and sustained write speeds of 140 MB/s, as well as maximum read speeds of 280 MB/s and maximum write speeds of 160 MB/s. This card has been designed with the V60 Video Speed Class rating, which guarantees minimum write speeds of 60 MB/s.