Bluetooth speaker and USB flash drive slot: Enjoy your favorite music with the built-in mini Bluetooth music player and USB slot. The unique sound activation mode makes the lights flash and change patterns with the music beat, creating a stunning starry sky projection. 10 adjustable colors and brightness levels: Choose from 10 different star projector light sources. Adjust the brightness (40%, 70%, or 100%) and color to suit your mood. Romantic Starlight Projector: Realistically project a dynamic nebula onto the ceiling or wall. Combine multiple colors at varying speeds to create a relaxing atmosphere. Select the mode that matches your mood or environment. This multi-functional projector brings a romantic starry night to life. Versatile lighting: Use it as a night light with adjustable brightness, ocean wave ambient light, irregular light, disco ball, gaming scene lighting, home theater accent, strobe, or DJ lighting. Perfect for classrooms, dances, parties, birthdays, DJ bars, karaoke, Christmas, weddings, performances, clubs, and bars. It's like buying multiple lights in one! Programmable controller S7-1200