1) Standardized: complies with MMC System Specification Version 4.0 2) Read speed: 8 Mbps (max.) 3) Write speed: 7 Mbps (max.) 4) Operating Temperature: 32?F to 140?F (0C to 60C) 5) Non-operating Temperature: 4?F to 185?F (-20C to 85C) 6) Size: .70' x .94' x .05' (18 mm x 24 mm x 1.4 mm) 7) Weight: 1.5g 8) Dual voltage: 1.8v-3.3v 9) Includes Adapter and Plastic Case ** OEM is warmly welcome. ** Lifetime Limited Warranty: 3 years warranty.