Fast enough to keep up with the actionGet extreme speeds for fast transfer, app performance, and 4K UHD.2 Ideal for your Android™ smartphone, action cameras or drones, this high-performance microSD card does 4K UHD video recording, Full HD video, and high-resolution photos. The super-fast SanDisk Extreme® microSDXC™ memory card reads up to 160MB/s9 and writes up to 90MB/s.9 Plus, it's A2-rated, so you can get fast application performance for an exceptional smartphone experience.