Unreleased portable NES handheld created by Biederman Design Labs and to be marketed by Camerica, which was notorious for denying Nintendo's draconian licensing agreements and publishing software without the NES seal of approval. The big thing about Camerica is that they also produced the Game Genie which also brought the wrath of Nintendo. Unfortunately for all of us the company fell apart before the handheld was released. Apparently the handheld above didn't fit in with Nintendo's own Game boy marketing strategy as they sued to stop it.
It would be interesting to see if any prototypes of this handheld still exist, which to date none have been found.