Wiseright Lights and Sounds Pullback Action 4&frac12;-inch Metal Chubby School Bus - Sound is Easy on Adult Ears 4-inch Yellow Chubby School Bus for Children 3 Years and Older 1/32 scale (4 x 4 x 2 inches) Die-cast Durable Metal with Plastic Parts and Rubber Tires Light and Sounds and Pullback Motor Action; Uses 3 Button Batteries (included) Sound level is Adult Friendly... loud enough the child will enjoy, but not overbearing on adults in the same room Back Door Opens and Side Stop Sign Extends (90 degrees)