Nintendo Hori SNES Super Game Boy Commander Controller

It was released in Japan and is meant to be used with the Super Game Boy in the Super Famicom; This controller was designed specifically for the Super Game Boy Adapter in order to replicate the gaming experience of the Game Boy Classic on the Nintendo Super Famicom. The controller was only distributed in Japan and is one of the rarer Game Boy accessories. Aside from the 4 Game Boy buttons (A, B, Start and Select), it also has 4 Super Game Boy specific buttons which can enable the user to mute the sound, reduce the speed of the game, pause and unpause repeatedly), change the colors and modify the display window