Get extreme speeds for fast transfer, app performance, and 4K UHD. Ideal for your Android smartphone, action cameras or drones, this microSDXC card offers up to 170MB/s read and 90MB/s write speeds for fast shooting and transfers. It is 4K UHD-ready with UHS Speed Class 3 (U3) and Video Speed Class 30 (V30). Built for and tested in harsh conditions, it is temperature-proof, water-proof, shock-proof and x-ray proof. Download the SanDisk Memory Zone app for easy file management (available on Google Play).