The�64GB SF-UY3 Series UHS-I SDXC Memory Card�from�Sony�features a storage capacity of 64GB and takes advantage of the UHS-I bus to support DSLR functions such as 4K and Full HD video, as well as RAW and JPEG captures. It can achieve maximum read speeds of up to 90 MB/s and maximum write speeds of up to 70 MB/s. Thanks to its U1 speed class rating, minimum write speeds are guaranteed not to drop below 10 MB/s. If your device does not support U1, this card is compatible with the Class 10 standard, which also guarantees minimum write speeds of 10 MB/s.