The Hiksemi Guard U1+U3 256GB MicroSDXC card is designed for reliable storage and continuous video recording, making it ideal for surveillance systems, smartphones, and other compatible devices. With read speeds up to 95MB/s and write speeds up to 50MB/s, it supports smooth video capture and fast data transfers. Built with TLC NAND and rated U1/U3 for stable performance, the card is also waterproof, shockproof, X-ray proof, and temperature resistant, ensuring dependable operation in demanding environments.