Features: 1) Capacities: 256M, 512M, 1GB, 2GB 2) Cryptographic security for copyrighted data based on security concepts from DVD audio 3) High digital data transfer rate for fast copy / download 4) High digital storage capacity 5) Non-volatile solid-state; no moving parts maximizes battery power 6) Data is not lost when power is turned off 7) Low battery consumption to maximize battery life in small portable devices 8) User selectable mechanical write protect switch on the exterior card casing 9) New devices with SD card slots will accept existing multimedia cards 10) Operating shock rating is 2,000Gs, equivalent to a 10-foot drop to the floor 11) Security level complies with both current and future secure digital music initiative (SDMI) portable device requirements