Hmm, I have one of those (long story of course, after bro in law and niece demolished the one from - oh, never mind, something about cracking nuts)
Mine may be an old style wheel.. or not. My computer is amazingly old, but the mouse isn't all that old. I would have to guess, maybe three years now. It's actually from a mac store.
I've no clue if it is laser - how do I tell? the light? I might guess it as laser.