Design: When you finish soldering and power on, the LED lights will spin like a wheel. And it has microphone, the kit will automatically sense the sound and let the LED lights will rotate with the sound. Application: Ideal for elementary school science projects, science clubs, science fairs, hands-on centers etc. Nice Gift: The soldering kit electronics is not only a PCB board for practicing welding, but also a nice gift for your child or your friend, that will be meaningful. Material: The electronic components kit uses safety materials, effectively avoid corrosion and wear out. Note: It is not assembled and needs you to be assembled manually. Size 4.8cm / 1.88inch Working voltage 5V LED quantity 10pcs LED colour Green, blue, red, whi.
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