This Gameboy has been modified with a brand new screen which is larger than the original one. Front glass has also been replaced with a new one and new buttons have been installed.
The screen on this Gameboy is Amazing. I personally love how awsome it looks. I could never go back to playing on a normal Gameboy anymore.
To change the screen brightness:
Press and hold the Select button, then press R or L buttons to decrease or increase the screen brightness.
I personally do all the mods so any questions you might have feel free to ask. I'll be glad to help anyway I can =)