We have two colors for this laser light, please purchase according to your preference A floating star (patent protected) will be projected immediately on the transformed RGB nebula cloud after it is turned on. No installation is required, bringing an instant atmosphere to the charming luminous atmosphere of a party, game station, meditation space or bedroom. Combining direct diode lasers, precision glass optics and holographic technology to create an unparalleled and otherworldly visual experience. With a soothing aurora effect, it can create a relaxing environment in any room. It is an excellent gift for adults and children. Enjoy the dining experience under the stars, create a relaxing spa environment, or add features to your home theater in a few seconds; it is an instant game changer in any room in your home. Download the app and connect with Bluetooth or use simple button controls to easily cycle through lighting effects, adjust brightness, or start/stop rotating motion. This model has a red, blue, and green nebula with green stars on it. Note: This product does not contain batteries