This is the 104-piece construction set that lets young engineers assemble, code, and control their own powerful RC bulldozer. The special wireless unit enables kids to control the 'dozer in real time or write and save sequences of commands it will perform at the push of a button without an app or separate devices. With LED lights, a speaker, two motors, flexible tracks, a truck bed, and a hefty bulldozer blade, the vehicle can be operated just like its real-world counterpart. It makes hands-on STEM learning fun and accessible as young engineers gain a clearer understanding of how robots, vehicles, and continuous tracks work. Includes a screwdriver for assembly, stickers for decorating, and detailed manual. Requires six AA batteries. Ages 8 and up. 11 1/2" H x 16 3/4" W x 2 1/4" D. (2 1/4 lbs.)