The SanDisk memory card is safe and secure, plus very compact data-storing device. The memory card type is micro SDXC. This small format means it'll fit into mobile phones and other smaller electronics. It has a capacity of 128 GB. It has a writing speed of 90 MB/s, and downloading from it is at a speed of 100 MB/s. Thanks to the specifications, it's well-suited for very demanding operations like saving 4K video.