Samsung EVO Select, 256 GB, MicroSDXC, Class 10, UHS-I, 100 MB/s, 90 MB/s Samsung EVO Select. Capacity: 256 GB, Flash card type: MicroSDXC, Flash memory class: Class 10, Internal memory type: UHS-I, Read speed: 100 MB/s, Write speed: 90 MB/s. Protection features: Magnet proof, Temperature proof, Waterproof, Product color: Green, White