With a write speed of 1200MB/s and a read spead of 1700 Mb/s and 128 GB in storage, this CFexpress card is a lightning fast memory card suited for both high-quality video and photography. Its speed and storage allows you to record 4K material at the highest settings without issue, on cameras like the Canon EOS C500 and the Canon EOS 1DX Mark III. Attention: We offer both Sandisk and Sony cards.