PS1 and Gameboy Advance Japanese orange controls?

Finally my collection of PS1 controllers is almost complete, I'm missing a few And finally my Gameboy advance arrived, yes, very happy Although I admit that the GBA comes extremely dirty full of postcards and a lot of dust and dirt stuck to it. The speaker doesn't sound good, the power button is kind of loose and almost doesn't turn on, the arrows are very hard But I'm going to disassemble it, change rubber, clean contacts and restore the case, put a new speaker in it and clean the power switch hehe?