Sony's UXA series of high speed SD memory cards are used with digital cameras, video camcorders and other devices that support micro SD cards. They maintain maximum transfer/read speeds up to 95MB/s* and write speed up to 70MB/s, supporting 4K video shooting, and maximizes workflow efficiency for transferring data or burst shooting and continuous shooting. The new UXA series micro SD cards have capacities of 32GB and 64GB (128GB coming shortly) and come with a full size SD card adaptor.