TrackMaster motorized engines from Fisher-Price have been redesigned so you can experience the Island of Sodor like never before! With enhanced speed and performance, these engines go faster and climb steeper inclines, driving Thomas & Friends to greater speeds, taller heights and bigger adventures! Flip the switch and watch Percy race along on another exciting journey. The No. 6 green engine is the perfect addition to your collectable, expandable, motorized TrackMaster world! Ages 3+. Requires 2 AAA batteries.