My Arcade DGUNL-3281 Contra Micro Player Handheld edition Pocket PlayerCONTRA POCKET PLAYER (PREMIUM EDITION)Product FeaturesFull color 2.8" vertically oriented screen.Allows for CO/VS™ link with another Contra™ Pocket Player, for Multiplayer CO-OP action (CO/VS cable included).Features the Arcade ROM of the original game.Powered by either 4 AA batteries or by any Micro-USB cable (not included).Built-in front facing speaker, volume control and 3.5mm headphone jack.Compact size and included lanyard make for perfect on-the-go gaming.Contra™ titles include Contra™ and Super Contra™.DC 5V, 1A (minimum 500 mA)Alkaline Batteries: 4x AA (6V total) (not included)