Designed for microSD devices such as smartphones, interchangeable-lens cameras, drones, or GoPro action cameras. It is capable of capturing Full HD, 3D, and 4K video. As well as raw and burst photography. The 128GB Extreme UHS-I microSDXC Memory Card from SanDisk has a capacity of 128GB and is compatible with the UHS-I bus. Its speed class rating of V30 guarantees minimum write speeds of 30 MB/s. If your device does not support the V30 standard, this card also supports the U3 standard, which also guarantees minimum write speeds of 30 MB/s. Read speeds are supported up to 160 MB/s and write speeds max out at 90 MB/s.