What makes the FS21 stand out in the category of Flash Memory camcorders is its Dual Memory capability. You can capture video on both the camcorder's internal 16GB Flash Memory as well as onto an SDHC memory card.
Video stored on the internal Flash drive can also be copied onto the memory card which can then be inserted into your computer or television's card reader slot for immediate viewing.
Additionally, you can use higher capacity memory cards to further increase the video storage of your FS21.
A Class 2 or higher card is recommended. Also, movie recording requires cards with 128MB of memory or more. Cards made by Toshiba, SanDisk or Matsushita are recommended. No particular restrictions apply for still images.