Optimal S3K Racing Trailer Remote Control RC Semi-Truck Ready To Run RTR w/ Opening Rear Trailer Doors (Colors May Vary) Full Function! (Go Forward and Backward, Turn Left and Right) Adjustable Front Wheel Alignment, Opening Rear Trailer Doors High Gloss Paint Job, Wheels with Rubber Grip Tires Requires 4 AA Batteries to run (not included) Remote Control requires 2 AA Batteries to run (not included) Approx. Dimensions, Length: 22.5" Width: 3.5" Height: 5"