LEGO Technic 4x4 X-treme Off-Roader 42099 contains 958 pieces and is a motorised vehicle controlled using the LEGO Technic CONTROL+ app. It uses an advanced Smart Hub and three motors to steer and drive the vehicle, while the app displays real-time data such as speed and tilt. The chassis features long-travel independent suspension, large wheels and wide tyres for tackling obstacles. From the app it can move forwards, backwards and steer precisely, as well as complete challenges and record achievements.