VT Century Semi Trailer Battery Operated Friction Toy Truck Ready To Run w/ Flashing LED Lights (Colors May Vary) VT Century Semi Trailer Battery Operated Friction Toy Truck Friction Powered, Just Push and Watch it Keep Rolling Removable Rear Trailer with Flashing LED Lights Lights Require 3 LR44 Batteries to run (Included) Approximate Trailer Truck Dimensions: Length: 16.5", Width: 2.5", Height: 4.5"