Upgraded 4in1 Star Projector: This bedroom galaxy projector combines a starlight projector, galaxy light, Bluetooth speaker, and night light in one device. It has preset light color, brightness, and speed combinations to create a magical, starry atmosphere in your room. HiFi Music Speaker and Sound Activated: Equipped with Bluetooth 5.0, the projector can make stars and the transforming RGBW nebula pulse in rhythm with the music. Connect via Bluetooth or insert a USB drive to play your favorite tunes for an immersive listening experience. Starry Night Light for Sleep: Nebula waves swirl and thousands of green stars fade in and out to create a soothing ambience. Play lullabies via Bluetooth and adjust volume and lighting effects to help children fall asleep. Note: Bluetooth is enabled by default; you can turn off Bluetooth via the control when not needed. Remote Control and Timer: The remote works up to 16 feet away, allowing you to adjust brightness, lighting mode, speed, music, and volume from anywhere in the room. A 4hour autoshutdown helps save energy, with 1hour and 2hour timer options available. Note: 2 x 3A batteries are required for the remote and are not included. Practical uses: Kids bedtime routines: calming nebula visuals paired with lullabies to ease sleep. Parties or movie nights: dynamic light effects synchronized to your music for an engaging atmosphere. Relaxing evenings: preset colors and brightness for a tranquil, decorative light show.