From the Manufacturer
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, built-in MagicGate, and high capacities. The Memory Stick PRO Duo is the ideal solution for the most portable devices such as pocket-size digital cameras and with the use of Adaptor, it can be used in all PRO-compatible devices.

Product Description
Many mobile phones now come with digital camera functions, digital audio player, and PDA features. With its small and compact size, SanDisk's Memory Stick Duo is the ideal solution for the converged cell phone application. The embedded MagicGate technology allows for compatibility to portable digital audio players and it is compatible to all Memory Stick slots with the use of the Adaptor. SanDisk Memory Stick Duo... Available in 32, 64 and 128MB. At only one-third the size of a standard Memory Stick card, the SanDisk Memory Stick Duo is ideal for ultrasmall cell phones that require greater storage capacity for storage-intensive features such as digital cameras, digital audio players, and games. Every SanDisk Memory Stick Duo card comes with an Adapter for use in all Memory Stick or Memory Stick PRO devices. High-speed data transfer Adapter included for use in Memory Stick and Memory Stick PRO slots Built-in MagicGate technology for copyright-protected content 5-year warranty