The WD/SanDisk Retail SDSQXAV-256G-GN6GN microSDXC card is engineered to meet the demands of high-performance mobile and portable devices, providing 256GB of storage capacity for 4K UHD video recording, high-resolution photography, and expansive application storage. Leveraging the Extreme UHS-I U3 V30 A2 technology, this card delivers fast read and write speeds up to 190MB/s and 130MB/s respectively, ensuring efficient file transfer and management. The V30 standard ensures a consistent minimum write speed of 30MB/s, enabling seamless 4K video recording without lag or stutter. Additionally, the A2 performance rating boosts the operation of apps on Android devices, making this card an excellent choice for gamers and multitaskers. Manufactured by WD/SanDisk Retail, this microSDXC card combines top-notch performance with reliability, offering users a dependable storage solution that can stand up to the rigors of extensive use and storage demands.