Take control of the play with this interactive toy train. The 33971 Record & Play Engine is a battery-powered train that’s packed full of playful technology and powerful enough to handle the heaviest loads.Customise the play by using the red button on top of the engine to record your own sounds. As the engine passes through the orange Sound Action Tunnel, it automatically responds by playing your recorded sound. “Honk, honk!”. Pair the engine with the Smart Tech Sound app and you can customise the sound environment even further.Control the trains motion using the three buttons on top – forward, stop and reverse. With 4-wheel sets, including a bigger third wheel set for stronger grip and a flexible boogie tail, this engine is one of the strongest in BRIO World and ready to pull many wagons and carriages.The added Smart Tech Sound technology allows the engine to communicate with its surroundings, automatically responding to Smart Tech accessories with various train actions that enhance the imaginative play like multicolour lights, motion and sounds.2 AAA Batteries are needed (Not included)Smart Tech is our way of adding extra layers of functionality and play value to BRIO Toys. Integrated technology and ingenious design opens up a new kind of interaction between child and toy. Sound, light and action are combined to create cause-and-effect chain reactions, telling little stories in the process. A passing train makes the farm animals come to life. A tunnel causes and engine to stop, reverse or even appear broken, letting your child become the hero by deciding what’s going to happen next.Smart Tech combines BRIO’s classic soft curves and wooden details with new educational and entertaining qualities. The result is a deep and rich experience – and many hours of captivating play.