Samsung MB-MY512S, 512 GB, MicroSDXC, UHS-I, 200 MB/s, 130 MB/s, Class 3 (U3) Samsung MB-MY512S. Capacity: 512 GB, Flash card type: MicroSDXC, Internal memory type: UHS-I, Read speed: 200 MB/s, Write speed: 130 MB/s, UHS Speed Class: Class 3 (U3), Video Speed Class: V30. Protection features: Drop proof, Magnet proof, Temperature proof, Waterproof, X-ray proof, Product colour: Blue