This is a multifunctional color LED lamp designed for Christmas Day, built-in 16 different music and 16 different LED change effects, 8 of which songs are Christmas theme songs. Octagonal star shape, you can hang it on the Christmas tree after putting it in the battery, switch to eight-tone electronic organ mode, and you can also play your favorite music. Features: Eight full-color LED lights. Four functions (two automatic music modes and two octave mode). 16 different songs (including 8 pop and 8 Christmas themed). 16 kinds of LED color change effect. Two octave modes to play your favorite music. Two autoplay modes, eight buttons corresponding to different music and LED effects. It is powered by two CR2032 coin cell batteries(not included). Specifications: Material: PCB+LED lamp beads+electronic components Shape: octagonal star Battery: 2 * CR2032 button battery (not included) Item Size: 105 * 105 * 8 mm / 4.13 * 4.13 * 0.31 inch (After combination) Item Weight: 21g / 0.74oz Package Size: 15 * 10 * 2 cm / 5.91 * 3.94 * 0.79 inch Package Weight: 25g / 0.88oz Package List: 1 * LED Lamp DIY Kit