Surprised to see so many mentions of gameboys. I have two gameboy pockets, one was mine and the other my sisters. I have no idea if they still work or not. Last time I played gameboy games, I prefered to play them on one of my gameboy advances simply because they fit better in my adult hands.
It has two different names depending on where it was purchased. I believe mine is called Radio Shack TV Scoreboard. The same console is also sometimes called Enterprex Apollo 2001.