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 stylish diamond-shaped design, it serves as a decorative piece during the day and projects a breathtaking starry sky onto ceilings and walls at night. 3. This projector includes dynamic lighting effects and built-in Bluetooth connectivity, allowing you to play music from your device. The lights can sync with the rhythm of your music for an immersive atmosphere. 4. Equipped with a timer function, it automatically turns off after 1, 3, or 5 hours, helping you relax and fall asleep peacefully under a personalized starlight environment. 5. The projector creates starry sky and galaxy lighting effects and supports wireless music playback 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 synchronization features. The timer setting provides added convenience for worry-free use.