HG-866 Portable 32-bit Multi Game Portable System is here. No need for using carts for this handeld, you can play al your games on the go.
Systems itself comes with an 2.8inch LCD Screen with 60Hz Refresh Rate for the maximum gaming GBA Experience. 100% with GBA support and easy adding new games though the SD game port at the bottom of the device.
So the HG-866 is an good solution for GBA games, smooth game running, excellent compatibility, low price.
Downside - The sound cannot be adjusted and cannot be turned off!