512GB Ultra microSDXC UHS-I Memory Card from SanDisk Features of the Sandisk Ultra Micro SDXC Card 128GB UHS-I Class10 A1 140MB/s C10, U1, Full HD, A1 Micro SD Card: Up to 150 MB/s Quick for Full HD video, better images, and app performance You can shoot, save, and share more than ever before with the SanDisk Ultra micro SD UHS-I card. Our S has up to 128GB of capacity.