DEALKOO 1/18 Scale Electric Monster Truck with Waterproof Electronics Material: Plastics. Wheelbase: 165MM;Wheel span: 95MM;Wheel diameter: 71MM. Scale: 1/18. Remote Control Transmitter battery: 4 x AA battery(not included). Package Content:1 x Monster Truck; 1 x Balance charge; 1 x Charging battery; 1 x Power Control; 1 x Instruction.