ITEM NAME:Physical Science Experiments DIY Circuit Kit Kids Educational Manual Toys Product Description Description: Student Physical Science Experiments DIY Electric Circuit Kit Children Educational Manual Toys Specifications: Name: Circuit Kit Material: ABS + electronic components Color as shown DIY purpose: Through the experiment of lighting the small light bulb, children can understand the basic principles of the series circuit and cultivate children's spirit of exploring science. Production principle: When the current passes through the series circuit, the current has only one path. When a lamp passes, the small lamp will light up at the same time. Notes: The product needs to be assembled by itself, without battery.Included: 1 X DIY Electric Circuit Kit. DIY purpose When the current passes through the series circuit, the current has only one path. Material: ABS + electronic components. If item is defective after 3 months, you can still send it back to us.