This auction is for a Sega Saturn 1MB Memory Expansion Cartridge.

I tested it with Marvel Super Heroes on a Japanese Saturn. It showed the 3MB mode as available on the options and appeared to work.

Please note that the Sega Saturn cartridge slot is very picky about the placement of carts and it may take a few tries to get it to read correctly.

The cartridge has wear, stains, marks and scratches. There are stickers on it. Please see the included pictures.

I will ship it out via USPS Ground Advantage.