This DIY Christmas tree kit contains more than 20 kinds of difference l-ed breathing effect, 33 l-eds simulated the star breath flashing effect. The gradual changing brightness makes it cool and no longer dull, nice DIY decoration for Christmas day. Features: Using 33pcs 5mm highlighted L-ED display. 23 kind of L-ED gradient effect to simulate the star-flashing and other 3D L-ED effect. All using DIP components to build, suitable for beginners. Green PCB combine to a Christmas tree shape. Switch button to switch the next effect. Double electricity source optional: micro USB cable or wire connect. Use micro USB cable to connect a computer or phone charge to provide it with the 5V. Specifications: Material: PVC Color: Multi-color, Blue, White, Yellow (optional) Item Size: 136 * 70 * 70mm / 5.35 * 2.76 * 2.76in Package Weight: 45g / 1.59ounces Package Size: 130 * 70 * 30mm / 5.12 * 2.76 * 1.18in Function: 1. Use micro usb cable or electric wire to provide 5V electricity. 2. Toggle the switch button to switch the next animation effect. Package List: 1 * DIY Christmas Tree Kit