The SanDisk memory card is a safe and small data-storing device. The card's type is SDXC, which makes it well-suited for most cameras. It downloads data at a speed of 90 MB/s, and downloading from it is at a speed of 170 MB/s. The SanDisk SDXC 64GB Extreme For UHS-I (V30) U3 is of the speed class of Class 10. Thanks to its parameters, it's well-suited for very demanding work such as saving 4K video.