A red cartridge that's ever so slightly transparent. Looks great actually, yes it is infact the fan translation and I'm with them on the fact if an official release to the west ever comes out, buy it, but for now this is the next best thing for it. Interesting thing I've noticed is the cartridges is slightly larger than actual GBA cartridges. Just in how tall it is. Putting it into my GBA sp it ever so slightly extends beyond the bottom. It's enough to notice when in the system but outside of it it's hard to tell unless you pull out one of your GBA games you likely have owned for over 20 years now. And set them next to each other.
