The WD/SanDisk Retail SDSQXBD-256G-GN6MA is an advanced 256GB microSDXC (TransFlash) Extreme Plus flash card that is perfect for professional photographers, videographers, and enthusiasts demanding high-capacity, speedy storage options. With a C10, UHS-I U3 specification, this card ensures a seamless experience when capturing or playing back 4K UHD videos, with a stellar transfer speed of up to 140mb/s, facilitating quicker copying and accessing of files. The durability of SanDisk products means this card is resistant to water, temperature, shock, and x-rays, ensuring your precious data is guarded against most adversities. Whether you're undertaking extreme sports filming or capturing the subtle nuances of nature, this robust memory card is your reliable partner for recording and storing those unforgettable moments.