It comes with it's own rechargeable battery that is charged via USB. It's website, ds-gps.com is mostly incomplete, and has no information on pricing or available yet.
That would certainly be a fun gadget to have on the ds, but I don't think I would carry something that sticks that much out of my ds. Does a card come with it or do we have to load a rom on a card ourself?
I'm not too sure what you would use gps for in a ds. Seems like gps stuff would work a little bit better on something like an iphone or one of those google android phones.
That looks a little to bulky. I don't think I'd want to carry that around in my pocket.
go to dcemu.uk and look into densikas forum and his MapTHIS project for the psp. it is far superior to this. I love my psp gps.
Doesn't work on a DSi since the DSi has no GBA port.
That being said, looks too big, but first generation products are usually like that. If they get that shrunk down enough, it would be a great product. I'd rather have that than a camera and image editing software to stretch faces around.