The R4 DS v2 allows for more than just gaming. Now you can use watch movies, play music, browse pictures, read E-Books and more on your Nintendo DS and DS Lite! The R4 DS is a slot 1 device (which requires no passcard) from the famous producer R4 Team. It uses a Micro SD card for low cost and high capacity while fitting nicely in your DS/DS Lite. 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.