1. Star projector with built-in Bluetooth - Transform your room into a musical starry sky! Enjoy a stunning celestial display indoors with this elegant star projector that brings the beauty of the night sky into your bedroom. 2. Featuring a sleek diamond-shaped design, it serves as a stylish decorative piece during the day. At night, project a mesmerizing starry sky onto your ceiling and walls for an enchanting atmosphere. 3. This projector offers dynamic lighting effects and includes built-in Bluetooth functionality, allowing you to stream music from your compatible device. The lights can sync with the rhythm of your music for an immersive experience. 4. Equipped with a timer function, you can set it to turn off automatically after 1, 3, or 5 hours, helping you drift off to sleep peacefully under a calming starlight ambiance. 5. The projector creates realistic starry sky and galaxy lighting effects and supports wireless audio streaming via built-in Bluetooth. 6. Materials: Plastic, electronic components. 7. Battery: Built-in rechargeable battery. 8. USB: Yes, for charging. 9. Timer function: 1, 3, or 5 hours. 10. Included: Star projector and remote control. 11. Offers multiple lighting modes, color options, and music-sync technology. The automatic shut-off timer provides convenience and energy efficiency.