It's part of the system pastiche.
Now that you're a Saturn owner, you get to flaunt it with big, ugly jewel cases.
Plus, nothing leaves bruises on friends that out-play you in XM vs SF than a big, ugly jewel case .
I'd recommend a power convertor for Japanese consoles - I use one on my Japanese PS2.
In all likelihood, you won't have any problems (especially if you unplug your console after you're done); however, since it only costs about $25 for a voltage convertor (I got mine from radioshack.com the only...