1) Capacity: 256 MB, 512 MB, 1GB, 2GBand 4GB, 8GB, 16GB 1) Fully complies with SecureDigtal Association specifications2) Mechanical Write Protect Switch3) Noise-free operation4) No extra Power required5) Data Endurance:100K Program/Erases Cycles6) Driver free7) Warranty: 1-year