1、1. After completing a robot kit, these parts can be easily disassembled. This provides a continuous learning and playing process while making one of three robot options. Whether it is manufacturing robots or robotic dogs, this set of tools can be a good introduction to green technology. 2、2. The free energy provided by the sun powers one of the three robotic possibilities. No battery is needed, because alternative energy sources can do the job. 3、3. The acceleration and the number of moving parts will help the development of future engineers. Learn how each piece works together with other pieces to create a finished robot with exercise possibilities. 4、4. Build a robot step by step, it is easy to follow the instructions in the manual to complete each build. Suitable for children over 8 years old. Each robot moves in its own unique way. This 1-13 piece set of equipment uses a gearbox design to achieve a smooth sports experience and allow you to enjoy hours of fun. 5、5. All of our toys are made of non-toxic ABS materials, so that children can play more safely and parents can rest assured. The parts of the sound toy are smooth, without muscles, precise assembly, and high integration. The intelligent structure design makes several parts common, and children will like it and refuse to play video games. Material: Plastic Color: Green Age: Over eight years old Packing size: About 24*6.7*18.2cm Battery: 1* Solar battery (included) 1* DIY dinosaur game set 1* English Instruction Manual