SanDisk SDSQXFN-512G-GN4NN. Capacity: 512 GB, Flash card type: MicroSDXC, Internal memory type: UHS-I, Read speed: 880 MB/s, Write speed: 650 MB/s, UHS Speed Class: Class 3 (U3). Protection features: Drop proof, Magnet proof, Shock resistant, Waterproof, X-ray proof, Product colour: Black