The Interactive Piano With Karaoke Becomes A Musical Toy For The Little Ones That Will Allow Them To Develop And Encourage Their Listening And Musical Abilities While Stimulating Their Creativity And Imagination. This Piano Has An Auxiliary Audio Input To Allow The Input Of Other Plug-Ins Such As Microphones And External Music From Mobile Phones And Imagination. This One Since He Was 2 Years Old. It Works With Batteries That Are Included