The HOLIDAY EXPRESS Animated Christmas Train Set is a ready-to-go starter set featuring a G scale model train with a colorful multi-color design. Made of plastic, this analog-controlled train set is suitable for various age levels, from 4-7 years old up to 17 years and up. The set includes a controller and is powered by AC, making it a fun and festive addition to any holiday display or model railroad collection. HOWEVER, this set is not working. It would be a great add on for those wanting to extend their current sets or someone who is good with mechanics. The individual pieces are in great condition. Used 2-3 years at most.