The RockJam electric keyboard piano combines form and function beautiful to bring you premium features at an entry level price making it an ideal choice for beginner keyboard players. Despite housing the traditional 61 keys the this RockJam keyboard piano is highly portable. Powered by even mains power (power adapter included) or through 6 * 1.5v batteries (not included) it is an ideal option for both home use and those making music on the move. Dont be fooled by competitive pricing, the RockJam 361 is packed full of features: USB mp3 playback Perfect for playing your favourite backing track. Mic Input So you can sing along with your composition. Aux in Making it easy to connect to most mobile and tablet devices. Headphone Out Perfect for practicing with disturbing anyone around you.