Back-up utility for the Master System Console.
Region-free. Compatible on UK/EUR/US consoles.
Includes pre-loaded SD/Micro SD card which slots in at the top.
OS already installed, no changes needed.
Includes an SD Card filled with the complete Master System game library.
Label design may vary, depending on levels of stock. But essentially, it will be the same cartridge with the same functionality and same OS installed.