Description: The flashing Christmas tree kit is composed of three circuit boards, which are assembled by self-welding, so that 36 LED lights flash alternately, making it more beautiful at night. DIY learning kits to assemble Christmas trees are not only seasonal gifts and decorations, but also soldering projects, designed for electronics enthusiasts, students and beginners to practice electronics knowledge and soldering skills. The 3D Christmas tree DIY learning kit requires users to complete the assembly and soldering process, each marked component name of the PCB and a detailed English user manual, making the process of DIY beginners and e-learning projects easier. Perfect gift to student, teens, kids, friends, or DIYers, soldering fans. It can not only be used as an education toy, but also be a beautiful decoration at home on holidays or a delicate bed lamp. Specification: Material: Acrylic Power Supply: 3x AA Battery (Not Included) or USB Size Chart: 13.6x6x6cm/5.35x6x6inch Package Includes: 1 Piece Christmas Tree Electronic Assemble Kit Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!