Reliable and fast memory card for recording HD videos. Read speed: 150 MB/s, Write speed: 104 MB/s. Speed class: Class 10, UHS-I. Suitable for capturing high-resolution photos as well as filming and editing Full HD videos. Waterproof, shockproof, x-ray proof, and temperature resistant. Take better pictures and Full HD videos with your compact to mid-sized cameras and camcorders. With SanDisk Ultra SD cards, you benefit from faster downloads, high capacity, and better performance when capturing and storing up to 512 GB of high-quality images and Full HD videos. Enjoy ultra-fast read speeds of up to 150 MB/s (256 GB-512 GB) to save time transferring photos and videos from the card to your computer - up to 875 photos in one minute. SanDisk Ultra UHS-I SD cards are waterproof, temperature resistant, x-ray proof, and shockproof, and they are compatible with SDHC and SDXC digital devices. 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, while Class 10 cards are 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), a minimum of Class 6 is recommended. UHS-I bus system. UHS-I capable SD cards allow for theoretical data transfer speeds of up to 104 MB/s. The speed class is indicated as U1 or U3: U1 for Full HD videos and U3 for 4K videos. Memory cards with UHS-I support are backward compatible and can be used in devices without UHS support (with limited performance).