1. [Suitable for Beginners]: High quality parts and intuitive design, designed specifically for electronic beginners to learn how to solder electronic components. 2. [Fun and Education]: DIY Design: The button switch of the product can be replaced with other button switches. 3. [Creative Gift]: The practice board is very small, with small holes on the board that can be hung for decoration. It's cool and can be given to friends or family. 4. [Easy to solder]: The space between the solder pads and the solder pads on the PCB is large enough, making assembly convenient and simple, and has a wide range of application scenarios. 5. [Widely Applicable]: The shipment is in loose parts and requires self assembly, which can improve one's hands-on ability. It is suitable for welding skills training, DIY production, project design, e-sports, etc. Power supply: Battery powered Battery model: CR2032 Size: 5 x 5 centimeters (1.96 x 1.96 inches) It's DIY kits, needs to finish by yourself. Color: As Shown Material: Plastic+Metal Package Contents: 1 * Electronics DIY Kit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.