You can change modes with 2in1. Kai's Transmecha Jet set. Perfect for children who love building and pretend play. This set includes a robot-type mecha set that can be converted into a jet plane, 2 minifigures Kai and Richie, and a keyblade. Children's creativity will be nurtured as they play and recreate famous scenes from Prime Empire. Kai rides a powerful robot with movable arms and legs and a stud shooter. It can also be converted into a jet plane, greatly expanding the world of play. This 217-piece set is the perfect Christmas, birthday, or special occasion gift. (Target age: 7 years old and above) Enjoy pretend play in the world of cool ninjas. This set of cool mechanics is just the right size to carry around at home or on the go. The size of the mecha is approximately 16cm high x 25cm wide. No batteries required. Children's curiosity and passion, as well as their creativity to create fun stories, are their energy. Comes with easy-to-understand assembly instructions. This set will give you an even more wonderful experience. Download the LEGO Life app (free) and use Instructions PLUS to see how to build using the zoom and rotation tools. Lego Ninjago is an action-packed series where kids can play as their favorite ninjas and imagine stories where they take on the forces of evil in a fantasy world.