Color:64GB Class 10 Critical for continuous burst shooting, the Sandisk Extreme Pro UHS-II memory card will maximize the potential of your camera for efficiency in recording and post-production. These SDHC and SDXC cards are equipped with read/transfer speeds up to 300MB/s and write speeds up to 260MB/s. Capture 4K and Full HD video with the UHS Speed Class (U3) professional photographers need. Don’t risk missing a critical moment with a slower, less efficient memory card when you can have the assurance the UHS-II compatible SanDisk Extreme Pro brings! Bundle includes (1) SanDisk SD Extreme Pro UHS-II memory card and (1) Everything But Stromboli (TM) 3.0 SD/Micro Card Reader.