This is the speaker upgrade kit that is for consoles that do not have the built in speaker system - essentially all non-Limited Edition consoles (GOW3, MW3, Star Wars and Halo Reach) which only have a cheap low end buzzer type speaker.
Game Boy Advance Sport Shell Hard Case! When you?re hauling your Game Boy Advance from location to location, you can risk it in your backpack or pocket, or you can go with the guaranteed protection from this rugged, hard case. We think this is a no-brainer. There?s enough room in the multiple compartments of this case for your Game Boy Advance or Game Boy Color, four games, batteries and cables.