3 Models In 1 Building Kit: Children will have a blast playing for hours. Robot/ Tank/ RC Car, build their favorite robot one by one. It still more fun to be had after building! Programmable & Flexible Control: Have a racing with your friends together without signal interference. You can even download the app and remote through your phone. Driving mode, Path mode, Gravity sensor and Programming mode are easily operated by APP bluetooth connection. Nice surprise for your son/grandson.