Those aren't really new People from the hacking Scene I think call them Sega Radica. Its a bit like those Plug'n Play System Except No Plug just Play. Those are used to make Portable Genesis console, people are able to add a Cartridge slot. If you want to know more about it go here:
It's cool and the screen looks better than a Nomad....and I'm sure the battery life is better too. My main problem is the game selection. Its ok, but I'd get tired of it pretty quick. No Phantasy Star or Shining Force....and Arrow Flash is the only shmup. There was a thread a while back about this....I think the guy bought it so'll maybe you can search a bit and see if he liked it.
yeh suppose everyones different but theres some of my fave games on there, cant find the thread btw. o well I think my minds made up its not a lot of money for how many games there are.