STEM student experiments combine science, technology, engineering and mathematics to improve students' comprehensive abilities. This kit is perfect for students who want to understand the principles of wireless power transmission and become interested in new . It's a great way to encourage children's critical thinking and creative thinking. Features -Color:Assorted Color -Material:Wood and copper -Size:10.00X9.00X8.50cm/3.93X3.54X3.34in -Size:11.50X9.00X8.50cm/4.52X3.54X3.34in -Note: need to assemble by yourself. - Improve students' comprehensive abilities in all aspects. - Integrate of science, technology, engineering and mathematics. - Cultivate curiosity about new energy. Complete DIY science educational toy kits set. It needs youself to assemble the parts, you can enjoy the DIY fun at the same time. - Stimulate critical and innovative thinking skills. Ideal for students majoring in STEM subjects. - Perfect educational toys for kids. help to improve the ability of children, suitable for young people at key stages of brain development. Package list: 1 x set of DIY Electric transmitter 1 x set of DIY Power receiving unit 2 x specifications