Those who love powerful trucks and construction toys will enjoy building this LEGO® Technic 4x4 Mercedes-Benz Zetros off-road truck (42129). This toy truck is full of realistic functions and offers adults and children from 12 years of age an exciting construction experience. Open the cab doors and the hood. Look at the working suspension on all 4 wheels and open the service door to inspect the transmission. The model also has a motor with rotating fan that is true to detail. As the first LEGO Technic model ever, this truck has a differential lock. Lock and unlock the differentials with the app to control the off-road truck through rough terrain. The app in this model is the beginning of building. Use THE CONTROL+ app to test this powerful truck. The various control screens let you steer the truck and actuate the differential lock.