Offering both strength and speed, the 640GB CFexpress Type A TOUGH Memory Card from Sony provides fast read speeds up to 800 MB/s along with write speeds up to 700 MB/s. This quick performance benefits recording a variety of video resolutions, bit-rates, and compressions, as well as high-resolution continuous raw photo shooting. Beyond its speed, this TOUGH memory card also has a reinforced physical design to withstand falls from up to 15' and has been rigidity tested to 70 N of force. It's also resistant to extreme temperatures, X-rays, electrostatic, and UV lighting. Offering further protection, File Rescue recovery software can be downloaded for recovering lost or even accidentally deleted files and Media Scan Utility can be used to automatically scan CFexpress cards and inform you of the flash memory condition.