Technical bulldozer building block set, crawler excavator fixture model, STEM engineering vehicle model kit, children's toy building blocks, suitable for boys and girls, birthday and Children's Day gifts (514 pieces) 8+13014S

【 Engineering Model Excavator 】 : This remote-controlled excavator is a mechanical excavator model. A rotation button can be set to control the Angle of the loading bucket, low rotation and high arm, and explore 360-degree rotation. 【 Children's Engineering Toys 】 : This remote-controlled building block excavator combines the two main elements of building blocks and mechanical engineering, enhancing the playability of the game. This bulldozer fixture consists of 514 parts, each individually packaged with detailed instructions for easy understanding and assembly. 【 Remote Control APP】 : The clamping module technology is equipped with a 400mah lithium battery and supports both mobile application and remote control operation modes. Equipped with a 2.4ghz remote control system, the signal is stable and free from interference. 【 Safety Materials 】 : Made of environmentally friendly and safe abs material and natural carbon powder raw materials, it is safe and harmless. The block structure at the excavator site is solid and close to reality. 【 Ideal Gift 】 : The best gift for children over 8 years old. It will keep children busy, allowing them to spend quality time with their families and friends, and develop patiently together with them.