SDXC card for professional users. Read speed: 280 MB/s, Write speed: 210 MB/s. Speed class: Class 10, U3, UHS-II, V60. Waterproof, temperature resistant, shockproof, vibration resistant, and X-ray safe. Enables fast capture and transfer of high-quality photos and videos. Suitable for Full HD and 4K video recording. UHS-II bus system. SD cards with UHS-II standard offer speeds of up to 312 MB/s in compatible devices. Like UHS-I, there are also UHS speed classes here: 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). 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 shows 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 class is divided into classes 2, 4, 6, and 10. For Full HD video (1080p), a minimum of Class 6 is recommended.