SANDISK EXTREME PRO microSDHC UHS-I MEMORY CARD Capture 4K Ultra HD and Full HD videos and enjoy transfer speeds of up to 100MB/s so you can shoot like a pro and still experience world-class responsiveness from your phone. Class 10, UHS-I Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings mean your videos can meet today's highest resolution standards.