Sir Topham Hatt from Thomas amp Friends is now riding on a musical caboose. Press the top to hear the Thomas amp Friends theme song or hear Sir Topham Hatt's real voice as he gives his signature phrases. The musical caboose also features a working light that lights up the inside of the car when the button is pressed. Fisher Price Take n Play vehicles, track and destinations are compatible with Learning Curves Take Along Thomas items, but neither are compatible with the Thomas Wooden Railway line. Requires 2 X button cell batteries demo batteries included Dimensions 2.75L x 1.25W Ages 3