This is a very rare Betop version GB, which has an independent startup screen, and this blue color is also very rare. I tested it and it can start up and play normally. The only flaw is that during testing, when the sound scroll wheel is quickly rolled, it will blur the screen and needs to be slowly rolled. It may need to be opened for adjustment, after all, it is a product of the last century, and everything is primitive. Overall, it is a very rare collectible, safe packaging sent