Sandisk 2-PACK: 1GB SD Secure Digital Card (SDSDB-1024-A10, Retail Packages!) Fast transfer rate for reliable copy/download/backup 1GB of storage capacity Low battery consumption to maximize battery life in 2GB of storage capacityportable devices User selectable mechanical write protect switch on the exterior card casing Sandisk 2-PACK: SDSDB-1024-A11