WolVol Drop and Go Train Toy, Talks and Sings and Drives on its Own (3 Activity Balls Included) Bump & Go Train! It will change directions and run when it bumps into something When the train runs and the balls fall out, chase them and throw them into the train Option to close the back of train, so the balls will just spin around within the train Can also be played as a regular train toy, without the bump & go option 4 AA batteries required (not included)