Feature

Original NDS cart size: R4DS is the same size as original DS cartridge, which never sticks out of any DS & DS Lite.
R4DS Support TF unlimited capacity: With High-speed data transferring technology, R4DS supports the ultra large capacity TF (MicroSD) cards upto 4GB (32Gbit) in size;
R4 Revolution Support all kinds of DS roms, Using plug & Play technology: R4DS directly plays in SLOT-1 of the DS without any passcard, FlashMe or WifiMe, and perfectly supports all version of DS including Fat DS. DSL. Ids. Idsl. It also uses plug & play, no Software needed!
R4 DS Support GBA function and GBA cartridge slot: For using of DS Slot-1, R4DS already has PassMe functionality built in, it supports GBA games which is pluged in slot-2 and also the games which are required to use DS Slot-2 such as Rumble pack, Opera Extend cart, Gyroscope Adapter.
Compatible with Clean Roms, Movie, Music and other media files: R4DS supports clean ROMs, Homebrews and Multimedia files with no slow-downs or hang-up,
Very low Power consumption: R4DS uses Very Low Power Consumption, which means you can play Games, Multimedia files, and Homebrew more.
Perfect Save system: There is no PC software required and no more backup and restorage, directly Drag and drop all files into the MicroSD (TF) card from Computer;
Compatible with all the DS gamesave type: R4DS is Compatible with all the DS gamesave type and easy to Manage your gamesave files. Menu program can be easily updated through TF (MicroSD) cards.
Package Contents:

Genuine R4 DS (R4DS)
MicroSD/TF Reader
Protective Key chain

The R4DS Cartridge is the current top-of-the-line in DS SLOT-1 flash carts. It is Just an amazing little device like original DS cart size, it is a complete solution with no need to purchase any a additional components or deal with any messy software and truly the easiest media enhancer you have ever done; To simply put it, this is a must have peripheral for any regular DS / DS lite owner. Supports roms, multimedia files, or Homebrew games of any size. Directly Drags and drops all files into the MicroSD (TF) card from Computer.

R4DS also know as R4 Revolution is a next generation Nintendo DS flash card. The R4 DS(R4DS) seems to be the most popular NDS card at this stage, the R4DS will totaly unlock your Nintendo DS console. Watch movies, store hundreds of games all on the this little but powerful Nintendo DS flash card. The R4 DS is just an amazing little device which is the same size as the original NDS cart, the R4 DS is a complete solution with no need to purchase any additional components and is truly the easiest to use media enhancer out there. To simply put it, the R4 DS is a must have peripheral for any regular Nintnedo DS or NDS lite owner. R4DS is quite easily one of the best slot 1 Nintendo DS flash card on the market. ROM compatibility is virtually 100%, just as long as you buy the right brand of memory. Otherwise, R4 DS is 99.8%. The best memory to use would be the Kingston MicroSD range which is know to work better then Sandisk on these units.