Feature: 1. High Compatibility: For Mega Drive V3.0 Pro game cartridge supports for MD1 MD2 MD3 CDX 32X original MD consoles and is highly compatible with for MD or for Genesis clone consoles, allowing you to play for Genesis, for Mega drive, for Master System, and for 32X games. 2. Maximum ROM Capacity: With support for up to 7Mbyte, faster game loading speed, compatibility with for FAT FAT16 FAT32 file systems, and a maximum 32GB Storage card, this game cartridge stores game data internally, ensuring progress is not lost even when power is cut off, comes with an 8G 3000 in 1 game card. 3. Convenient Features: Enjoy one touch pause function for Master System games, CD BIOS loading support, and the ability to return to the game list by pressing the reset button on for MD or for Genesis consoles. 4. Hardware Support: Equipped with for MEGAKey for playing games from various regions and supporting game cheat code functions, enhancing the overall gaming experience and providing more options for players. 5. Battery Powered: Made of ABS material, powered by 1 button cell CR1220 (built in) with a capacity of 38mAhs. Compatible with multiple for MD consoles. This ensures a wide range of compatibility for different gaming setups. Specification: Item Type: Game Cartridge Product Material: ABS Battery: 1 x 38mAh CR1220 Button Cell Battery (built In) Compatible With: for MD1 MD2 MD3 CDX 32X Original MD Console, Highly Compatible with for MD Or for Genesis Clones, Supports for Genesis, for Mega Drive, for Master System and for 32X Games. Package List: 1 x Game Cartridge1 x Sticker Note: System upgrades are not supported, updating the firmware will damage the device.