Fisher-Price Thomas & Friends TrackMaster, Molly Features a motorized Molly engine Push engine along or flip the switch to watch him chug along by himself Motorized train track play is compatible with all Track Master track sets (sold separately) Perfect addition to your expandable, connectable, motorized Thomas & Friends Track Master world Children will love bringing the world of Thomas & Friends to life Features a motorized Molly engine Requires 1 AA battery Motorized train track play is compatible with all Track Master track sets (sold separately) Perfect addition to your expandable, connectable, motorized Thomas & Friends Track Master world Fun for all kids