The Lexar 256GB Professional 1800x UHS-II SDXC Memory Card (GOLD Series) takes advantage of the UHS-II bus to support advanced DSLR functions, these include continuous shatter burst as well as raw and JPEG captures. The Lexar 256GB Professional 1800x Memory Card is also well suited for 4K, 3D, and Full HD video recordings. Thanks to the V60 class rating the minimum write speeds will never drop below 60 MB/s from the listed write speeds of 180 MB/s. This card features a read speed of up to 270 MB/s.