【Manual assembly】Children can learn more vital skills and gain a sense of achievement by playing with the handmade toys, assembling the circuit toy by themselves, greatly improving children's hands-on skills and inspiring children's imagination and operation ability.【Simple Operation】It's easy to assemble and disassemble, just need a few minutes, DIY toys can help them learn simple circuits and self-confidence. familiar with the working principle of electric circuit.【Friendly Environment Friendly】Made of high quality materials, which are safe, environmentally friendly and durable. Children can take more time to play with the DIY physical circuit toy instead of staying with mobile phone, TV all day. your children's thinking, encourage them to think more and brainstorm, learning how to solve the problem is more important than knowing how to answer at the beginning.【Creative intelligence】This craft DIY can improve children's hands-on ability. Funny educational toys are a good gift for children and students. It is also an experimental and educational toy, it is good for their early development. Size: approx. 12*8cm/4.72*3.15inch Note: The data are all manual measurement, please allow 1-3cm error, due to the light and display difference, there are will have some color difference, depending on the physical item received.