Build and explore this remarkable LEGO Technic reproduction of one of the world's most impressive hydraulic excavators, the Liebherr R 9800. Developed in partnership with Liebherr, this replica model is controlled via the LEGO Technic Control App and comes with an array of advanced app-controlled features and functions that put you in complete control. Choose from 4 different screens with cool graphics that add to the super-realistic play experience. Drive forward, reverse, steer via individual track control, rotate the superstructure, extend, raise and lower the boom, and open and tilt the bucket at the touch of a fingertip. Select an on-screen drag pattern for the boom and see it respond to your command. Use pre-set commands or record the excavator's actions to create complex sequences of movements, then turn up the authenticity with real Liebherr R 9800 sound effects-all from the comfort of your smart device! And when you're ready, you can test out your skills in the app's challenges and achievement section-how many reward badges can you collect? This high-fidelity replica is packed with true-to-life, brick-built details, such as hydraulic tubing and pumps, cooling vents, a fire extinguisher system and a detailed operator's cab with seat, joystick and control panel. A classic color scheme with intricate sticker detailing adds the finishing touch to this magnificent LEGO construction toy for kids and grown-ups. Ages 12 and up.