It's a keychain that plays a horse noise. Awesome, right? You could be out anywhere, and suddenly have the urge to listen to the sound of a horse, and just have a horse noise right there. In your pocket. To be fair, the horse immortalized by this keychain is not just some regular horse, but Kokuoh-Go, Raoh's giant horse who is also a king. Unfortunately, we don't know what Kokuoh-Go sounds like, but maybe his neigh is way tougher-sounding than a normal horse's.
GAME Watch has some new screens of the game, in case you're as interested in extremely violent screen-tapping as we are.