Spencer is a Really Useful Engine with lots to say! This fun Talking Spencer motorized Engine shares train sounds and signature phrases when you push the button on top. This Spencer train not only talks, but with the flip of a switch, he can drive on his own! Watch him chug chug along while talking to you! The TrackMaster Talking Spencer Engine is only compatible with other TrackMaster trains and track sets. No track pieces included. Requires 3 AAA batteries. The TrackMaster Railway pieces are larger than the other railway lines and are made of quality plastic with the engines and trains running on battery power. The TrackMaster Motorized Railway is perfect for fueling the imagination of young engineers! Spencer and train car measure approximately 9" long.