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 colour scheme with intricate sticker detailing adds the finishing touch to this magnificent Lego construction toy for kids and grown-ups.