Video game consoles can come in several varieties.
Home video game consoles are devices that are generally meant to be hooked up to a television or other type of monitor, and with power supplied through an outlet, thus requiring the unit to be used in fixed locations. Early examples include the Atari 2600, Nintendo Entertainment System and the Sega Genesis, while newer examples include the PlayStation 4 and Xbox One.
Handheld video game consoles are devices that typically include a built-in screen and a battery so that the unit can be carried around and be played anywhere. Examples of such include the Game Boy, the PlayStation Vita, and the Nintendo 3DS.
Hybrid video game consoles have elements of both home and handheld systems. Presently, the only hybrid console is the Nintendo Switch.