Read/Write Speed: Class 10 Capacities: 8GB(C10), 16GB(C10-UHS-1), 32GB(C10-UHS-1), 64GB(C10-UHS-1) Performance: Up to 80MB/s read; Class 10-UHS-I: 10MB/s minimum data transfer microSDXC Card Dimensions: 11mm x 15mm x 1mm Format: FAT32 (microSDHC 8GB), exFAT (microSDXC 16GB, 32GB, 64GB, 128GB)