this Game boy advance SP has been modified with a USBC rechargeable port, RGB buttons that are customizable to personalize for your preference, and audio amp to boost volume to make the Game boy very loud, and an IPS LCD display to suit modern standards. also with a plastic screen protector already on top of the laminated IPS

this one is using a adjustable brightness via the button, but is also touch sensor adjustable.

and it's all installed on this OEM Game boy advance SP shell, the mods are movable, but there will be a wire that needs to be removed and soldered.