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. 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 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).