All aboard this red-and-yellow, classic BRIO two way battery powered engine. The engine can move both forward and reverse, and has headlights that light up. Compatible with Brio and other wooden railway sets. AAA battery not included. TT opinion: these are more suitable for somewhat older kids; most three-year-olds, for example, still benefit from the motor skills required to push non-motorized cars along the tracks. Just our opinion.