Feature:1. 1. Assembling is endless fun, stimulates children's interest, learns and understands the principles of mechanical transmission and linkage transmission, exercises children's hands-on ability, encourages and promotes brain development, and improves their hand-eye coordination.2. 2. The toy power supply provided by solar/battery, built-in 3.3 million ultra-filtered super capacitors, can store electrical energy to drive solar and dry battery drive modes (the battery requires 2*AA batteries, not included), which can help children familiarize themselves with the principle of solar power generation. The brain is well-developed and has a scientific understanding of the principle of photoelectric conversion.3. 3. Building blocks require great patience. Children need to be engrossed in DIY science toys. Play to improve their building block skills, arouse children's concentration, and have a good stimulating effect on children's education and training.4. 4. Made of high-quality ABS plastic, the edges are smooth and wear-resistant, non-toxic and safe, safe and friendly to children, and 3D cutting discs ensure the gaming experience.5. 5. Suitable for children's birthday gifts and Christmas gifts, and follow the instructions to complete and DIY the robot dog to let them understand the conversion and storage of electric energy.Specification:Name: Solar Electric ToysMaterial: ABS + electronic componentsBattery: Solar batteryWeight: 80gPackage List:1*Robot dog