Capture fast-action photos or shoot 4K UHD video1 with write speeds of up to 90MB/s. The SanDisk Extreme microSDXC UHS-I Card lets you shoot more and faster. Ideal for recording outdoor adventures, weekend trips, or sporting events without skipping frames. With up to 1TB, the SanDisk Extreme microSD UHS-I card lets you capture uninterrupted 4K UHD and Full HD video with its UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) ratings. Get faster app performance for an outstanding smartphone experience thanks to the SanDisk Extreme microSD card’s A2 Specification.