Get extreme speeds from a microSDXC memory card for fast transfer, app performance, and 4K UHD. Ideal for your Android smartphone, action cameras or drones, this high-performance Extreme Pro microSDXC card does 4K UHD video recording, Full HD video, and high-resolution photos. Super-fast SanDisk Extreme PRO microSDXC memory card achieves high read and write speeds. Plus, it's A2-rated, so you can get fast application performance for an exceptional smartphone experience.