The head unit holds the game being played and is connected to a controller with a cable approximately  long. The controller requires 4 AAA batteries and sports a cartridge storage slot (for keeping an additional game protected and available), volume adjustment dial, and brightness adjustment dial.
The main unit accommodates the current game being played and is connected to a controller via a cable of approximately  length. The controller requires power from 4 AA batteries and includes features such as a cartridge storage slot and dials for adjusting volume and brightness.