[Colourful gradual change effect] After completing the soldering, you have a seven-colour LED running light with gradual changes along the heart shape, it has dozens of different changing modes, not only a great choice for holiday decorations and desktop ornaments, but also a highlight for your electronic project display, which can make your space glow with a different luster. [Suitable for beginners and enthusiasts] The soldering difficulty is moderate, even if you are a beginner in electronic soldering, you can easily get started and this project. The finished product be a meaningful milestone in your soldering journey. [Hands-on teaching and course production] This kit is not only suitable for personal practice for electronic DIY enthusiasts, but also perfect for practical teaching and course making, it is a great tool for learning and teaching soldering skills. Colour:red Material:plastic Power Supply: 2 x AAA batteries(Not included batteries) Due to different batches, there may be differences in product appearance, color, and printed text, which not affect the use. Package Contents: 1 x DIY Electronic 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.