World's fastest SD card The SF-G series boasts an ultra-fast write speed up to 299 MB/s—fast enough to support continuous shooting of high-resolution images with high-performance DSLRs supporting the UHS-II interface. Faster Transfer to PC With up to 300 MB/s read speed, even large files such as 4K video or a bunch of high-resolution images by continuous shooting can be transferred to PC in seconds. Spend less time waiting and more time doing. File Rescue Sometimes things go wrong and data such as photos and files are accidentally deleted. File Rescue is a powerful tool for recovering data that is simple enough for anyone to use. Available as a free download to memory card customers. Supporting Interface Supports UHS-II interface for maximum performance. Also compatible with UHS-I devices Superior Reliability Superior reliability and durability even in intense use: X-ray proof, Waterproof, Temperature resistant, and shock-proof.