[. . . ] Open your Package and check for the following items: Make sure the AA batteries are remove from the main console while using the power adapter as the power source. [. . . ] Play Distances & Angles Side view 1 to 4 meters Main Console need to face the player vertically. * Geniecon features many plugins with various fun accessories * This will bring more fun and interesting play. For use with the power adapter, supervision is required with an adult. Cartridge slot: do not try to insert any metal object(s) which will short-circuit and damage the unit. -- Similarly to the game cartridges, do not insert any metal object (s) between the external contacts. Please remove the batteries if the product is not used for long period of time. [. . . ] - The V-MAX16 must only be used with the included power adapter (transformer). [. . . ]