The SDSQUNI-256G-ZN3MN is a 256GB microSDXC card from WD/SanDisk Retail, designed for users needing additional storage for their mobile devices, tablets, and cameras. As a part of the Ultra series, it features UHS-I technology and a Class 10 speed rating, guaranteeing minimum write speeds of 10MB/s, making it suitable for full HD video recordings and high-resolution picture capturing. With its included adapter, the card offers flexibility, enabling use in devices that require standard SD card sizes. The performance is optimized for fast app launches and smooth performance on mobile platforms, making it an ideal choice for smartphone users. Durability wise, it is built to withstand harsh conditions, providing a reliable storage solution that protects your memories and data against water, temperature changes, and other potential hazards.