When the sensor detects sound, it plays three random Christmas songs. At the same time, the lights around 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 and speaks loudly, your tree star sings! When a present is removed from under your living room 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 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 decorative lamp now! Just put it on the , 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 lamp decoration to beautify your Christmas tree? Don't you think your tree lacks a nice decoration to more and different? The Xmas decorative lamp is designed for decorating your Christmas tree. Choose one and decorate now! Color:As Shown Material:plastic Package Contents: 1 * owing Tree Star Christmas(without light string) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.