Merry Christmas! This is a kit helping you build little, glowing Christmas trees. Fistly, connect LED and coin battery. Then, place them into respective slots in the board. And fix another board perpendicular to this board. The Christmas stands and starts to glow. The arrangement would light up for several days, However, you can switch it off by pull-tab. Each LED glows quite different with verious materials of board, try them out. And you can use the overlay sitcker to make a colorful Christmas tree.