The rubber-band engine allows the model to stomp around like a real dinosaur.Scale pattern, Movable head, and tail. Eco-friendly sustainable material. Very high precision with laser-cut plywood with amazing details. All-inclusive boxes, self-assembly. No messy glue is required. Clear colorful step-by-step assembly instructions. The model includes candle wax for gears, sandpaper, and rubber bands. Very sturdy construction. Can be painted with thin water-based paints, except the gears, not to obstruct the mechanisms.