PLS Baby Music Mushroom House Electronic Learning Toy A toy for infants and toddlers that encourages physical and mental interaction. Inserting blocks, shapes, letters and animals help kids develop cognitive skills. Pressing the letters help kids to learn pronounciation of letters. Playing with the clock helps learn the concept of time and piano keys provide entartainment and develop musical skills. Comes in easy-to-open recyclable packaging and includes 3x"AA" size Maxell Alkaline batteries.