Includes 2 games, arcade version of Contra and Super Contra. Allows for CO/VS functionality for co-op action (CO/VS cable included). 2.8' full color backlit vertical display. Powered by either 4 AA batteries (not included) or by any Micro-USB cable (not included). Built-in front facing speaker, volume control and 3.5 mm headphone port, headphones not included. Compact size and included lanyard make for perfect on the go gaming. DC 5V, 1A (minimum 500 mA) Alkaline Batteries: 4x AA (6V total) (not included)