Super-fast 8K-capable SD UHS-II memory cards. Read speed: 300 MB/s, Write speed: 260 MB/s. Speed class: Class 10, U3, UHS-II, V60. The ideal choice for professional photographers and filmmakers. Consistent V60 minimum write speed and UHS Speed Class 3 (U3) for 6K, 4K, and Full HD video recording in stunning cinematic quality. Built for durability on the go with shock resistance, temperature resistance, waterproofing, and X-ray safety. From SanDisk - the brand trusted by professional photographers and videographers. For professionals who demand high performance. The card offers extremely fast transfer speeds of up to 150 MB/s for post-processing. With write speeds of up to 280 MB/s, you can easily handle fast shots. Speed Class 10. The Speed Class indicates the minimum continuous data transfer rate when writing video files to a memory card. The Speed Class number indicates the transfer rate in megabytes per second. Class 2 cards are designed for a minimum continuous transfer rate of 2 MB/s, and Class 10 for a minimum continuous transfer rate of 10 MB/s. The speed classes are divided into classes 2, 4, 6, and 10. For Full HD video (1080p), at least Class 6 is recommended. UHS-II bus system. SD cards with the UHS-II standard offer up to 312 MB/s in compatible devices. Like UHS-I, there are also UHS speed classes: U1 for Full HD videos and U3 for 4K videos. Memory cards supporting UHS-II are backward compatible and can be used in devices without UHS support (with limited performance).