The Pocket also uses different batteries, which make it more efficient. The GameBoy Pocket is a revised version of the original GameBoy. Now, you have to choose between the Gameboy or GameBoy Pocket, but what are the differences?
Maybe you never had one and want to see what it was like. I think that everyone who played on things like the GameBoy will get nostalgic every now and then. It is rather funny how we are still attached to our gaming devices even when they are a few decades old.