21st November 2004, 5:33 PM
Because the GB cart port obviously doesn't provide much power -- remember that the rumble pack GBC carts also used batteries. And if you click the link (all you need to do is click it and the the image will appear in my first post), you'd see that this is actually a quite large device. I'm not surprised that it uses batteries.
And it uses an antenna. Again, just click the link and see the image in the thread.
And it uses an antenna. Again, just click the link and see the image in the thread.