SanDisk's Memory Stick PRO Duo is half the size of a standard-size Memory Stick PRO media and it offers the same technologies, including high speed data transfer and high capacities. Embedded MagicGate technology ensures safe transfer of copyright-protected content. The Memory Stick PRO Duo is the ideal solution for the most portable devices such as pocket-size digital cameras. With the use of the included adapter, it can be used in all PRO-compatible devices. This is a 1GB Memory Stick PRO Duo.