R4 3DS Cards – a must have for 3ds console owners
The R4 is a slot 1 device, meaning it fits into the same slot that your 3ds games go, this gives you an idea of how small it is. With the R4 3DS you can store your files on a Micro SD or SDHC memory card, giving you the ability to store up to 32gb of data on a single memory chip, roughly the same size as a penny coin.
Choose the R4 3DS if you are looking to vastly improve your functionality on your 3ds or dsi console, without needing to break the bank on expensive technology.
Other options when choosing the R4 3DS include the R4i gold 3ds, R4i-SDHC dual core and Sky3dS flashcarts.