Expand your little one?s train set with the BRIO World – 33834 Smart Tech Engine with Action Tunnels from the Swedish toy specialists at BRIO. ? 3-piece set includes a train and two action tunnels. ? Features BRIO Smart Tech? for unique play interactions. ? All Smart Tech? pieces are compatible with each other. ? Use with the Brio Train Tracks (sold separately) to create your own little town. ? Suitable for ages 3 years and up. ? Requires 2 x AA batteries (not included). ? Conforms to the safety requirements of ASTM F963. ? CE certified.