The Christmas is approaching this year,have you already thought of which gift you will buy for your lovely kids, if not,while we suggest you consider this creative 3D christmas tree assemble kit.This is a creative soldering practice kit with the XMAS tree shape when assembled. There are 7-color 36pcs RGB LED diode divided into four groups, and each group has different flashing frequencies, when four groups flash together,it looks like a small Christmas tree, so interesting and exciting. It has 4.5-5V working voltage supporting 3x AA battery or DC 5V power supply power supply with the battery holder and USB cable. Simple circuit design and easy to assemble Simple circuit design and the PCB board has clearly marked the electronics components, easy to assemble. It is designed to practice your electronics soldering skills and also perfect for school basic electronics expriment projects. Detailed instruction provided to you we send the detailed english assemble manual to your amazon email account, if you do not receive it, please feel free to send us message and we will resend it to you in one day usually)