The Samsung PRO Ultimate (MB-MY256SA/WW) is a high-performance MicroSDXC memory card designed to handle demanding data tasks across a variety of devices. With a storage capacity of 256 GB, it provides ample space for high-resolution files, while the UHS-I interface enables read speeds up to 200 MB/s and write speeds up to 130 MB/s. These capabilities, combined with the V30 video speed class and U3 rating, make it a reliable choice for recording 4K video without interruptions. Built for durability, this card is resistant to water, X-rays, accidental drops, and extreme temperatures, ensuring your data remains safe in challenging environments. Its compact 15 x 11 x 1 mm frame weighs only 0.25 g, and it comes with a microSD to SD adapter for easier use across different hardware. Because it meets the A2 application performance class, it is well-suited for smartphones, drones, action cameras, and digital cameras where fast app loading and smooth data transfers are essential.