The TV Tuner plugs into the Game Gear's cartridge slot, and has a mono A/V input. This means that if required, a VCR, camcorder or another video game console can be connected and played off the system - it essentially turns the Game Gear into standard 1990s-spec television. Some models have an extra port for an extra antenna (the Game Gear Car Antenna was the only official product to use it) - this port was removed in some variants because it served no purpose in many regions.