3-in-1 starlight projector: The moon and stars lampshade will take you to the night sky, and the underwater world lampshade will make you appreciate the mystery of the sea .Removing the projection lampshade is the warm night light that accompanies you through the long night. 8 color changing modes: Through the color coordination of the lights blue, red, green and white lights as well as rotating lighting, which leads to a dreamlike experience. 2 power supply modes: USB power supply / battery (4 x 1.5V batteries AAAA not included) which can be powered by adapters, computer USB ports, power banks, etc. or moved by battery power ( Please do not use USB and batteries at the same time) Battery protection design: The battery frame is located at the bottom of the projection lamp and it is fixed with a small screw which protects the battery and keeps its beauty. Ideal gift: Can be used not only for room decoration, home creation warm, but also for parties, birthdays, etc.