"Full steam ahead!”. Chug around your BRIO World railway with realistic steam effects in the 33884 Battery-Operated Steaming Train. This battery-powered engine produces safe-to-touch steam from its chimney as it speeds down the tracks. Once you’re out of water, you can easily refill the engine using the refill load that’s being pulled behind the train. Press the red forward button on the top of the engine, the front light switches on as the steam starts to rise and you’re off again on more classic railway adventures.