We have several R4 Revolution for Nintendo DS cartridges. They are brand new, in the retail packaging. It comes with 1 x R4 cartridge/case, 1 x USB MicroSD card reader, software CD, lanyard (for the case) and of course the box it all comes in The R4 is used to transform your Nintendo DS into a multi-media device. The R4 Cartridge holds a MicroSD card in which you can back up the games that you currently own, load Music, movies, homebrew applications and LOTS more! Very easy to use, and extremely portable. Priced to sell our inventory, quickly! Discount if more than one is purchased. Thank you!