the dual screen, when first released, it had only
one good game for it, and that was a remake of mario
64.
basically, its got 2 screens, ones a touch screen, and the others, well, a screen.
wireless multiplayer, instant messanger style pictochat, and a few other small things, its pretty
slick
but, it huge, and hardly fits in your pockets, and only has 6-10 hours of battery life.
oh, and its rechargable