9 patterns of starlight projector and 14 light modes of ocean wave projector can work together in combination reach to 21 projection modes BT stereo speaker, playing music through BT and smartphones, and built-in 3 white noises, with unique sounds and watching the nebula milky way, the lights will flash with the music beats to change the modes Use the remote control to control starlight lights, color lights, adjust brightness, turn on/off lights, change lighting modes, play music With the USB charging cable, the starlight projector is powered by a USB cable and can be used with a wall charger It can be used as a living room or hotel decoration, and as a night light used in the living room, bedroom or children's room