This product allows for more than just gaming. Now you can use to
watch movies, play music, browse pictures, read E-Books and more on
your Nintendo DS and DS Lite!

Inside the package:
1 : 2 x Revolution 4 Card
2 : 2 x USB Adapter
3 : 2 x 2GB Micro-SD (ScanDISK/Others)
4 : R4 CD Software

Features:

    * English version (unlike some other cheaper models)
    * Same size as an original DS game cartridge
    * Built-in PassMe (NO need for any boot cart/passcard etc.)
    * Uses microSD memory card (Trans Flash) as storage.
    * Boot clean dump images (downloadable from internet)
    * Very simple to use: drag and drop files to the microSD card and
play
    * Standard FAT system support
    * Supports different speeds of micro SD cards
    * Runs games without any lag or slow down
    * Upgradable Firmware ( OS / Bios / Kernel )
    * Touch screen control and robust skinning support
    * No battery needed, back up the save file directly into the
microSD card: Never lose your saved games
    * Auto detect the save type and automatically generate saver file
    * Homebrew support , IO lib available on launch
    * Watch movies directly, listen to MP3s and read TXT on the DS via
the use of Moonshell
    * Supports WiFi, DS rumble pack and DS browser.

    * Model: AC-4U26AUR4010
http://www.suchcard.com/2-x-r4-ds-card-2gb-micro-sd-p-182.html