When the sensor detects sound, it plays three random Christmas songs. At the same time, the lights around the tree star light up and flash in a colorful, slow-motion manner. Note: This tree star model does not include a light string. When it detects sound, your tree lights up and sings Christmas songs! When someone walks around the tree and speaks loudly, your tree star sings! When a present is removed from under your living room tree, the tree star recognizes it, lights up, and plays Christmas songs! Batteries:3 x AAA battery (not included) Type:Sound-Controlled Tree Star 1. Perfect for Christmas. 2. Includes a voice-activated speaker with LEDs. 3. Adds sound to any tree. 4. Ideal for Christmas tree decoration - a must-have. 5. Fill your Christmas tree with vibrant colors! This treetop star can continuously and long-lastingly display lights and music, and automatically switches off when quiet, effectively adding to the Christmas atmosphere. Wonderful lamp decoration for Christmas, some banquets, theme party, wedding, birthday, etc. Cheer your Christmas party with this Christmas tree treetop decorative lamp now! Just put it on the treetop, door, countertop, along the hallway, above the table, etc. A special touch for your Christmas, filling your home with full atmosphere. Can help create a more happy and festive atmosphere for Christmas party, good decorative effect. Choose one and decorate now! Do you want to find a delicate and beautiful treetop lamp decoration to beautify your Christmas tree? Don't you think your tree lacks a nice treetop decoration to make it more unique and different? The Xmas treetop decorative lamp is designed for decorating your Christmas tree. Choose one and decorate now! Color:As Shown Material:plastic Package Contents: 1 * Gl