The 128GB T7 UHS-I microSDXC Memory Card from Samsung features a storage capacity of 128GB and takes advantage of the UHS-I bus to support maximum read speeds of 170 MB/s. This A2-class card has also been designed with the V30 Video Speed Class rating, which guarantees minimum write speeds of at least 30 MB/s. All of this allows users to capture 4K and Full HD video, plus raw, JPEG, and burst photos.