Cheerful music and colorful LED lights make playtime even more fun, let this steam train toy embark on a fun sensory experience with children. Realistic Steam, Lights & Music: Use the included water bottle to fill the locomotive’s tank, switch it on, and watch it eject realistic, odorless steam. Requires 5 AA batteries (not included) DIY Creative Track Layout: Encourages creative thinking—kids can design elliptical, circular, or uniquely shaped tracks, specially designed for small hands, the easy-lock track pieces lets kids assemble their railway with ease.