It have two control modes, manual mode and App mode. With the App mode ,you can control the projector light via APP on your phone, You can choose a variety colors, adjust brightness, set different color scene, adjust the voice control mode, etc. With advanced noise reduction technology, the star projector won't makes any noise while working. When you use it to decorate the bedroom ceiling, you can do it without affecting your normal sleep. The star projector night light is best choice for party, bedroom decoration, Birthday, Christmas, etc. And it is also the best choice as a gift not only for kids ,but also a amazing star projector for adults. The led projector light for room works for Home. Send a voice commands to get the LED projector to work, to turn on/off the star projector, allowing you to enjoy a smart life. The USB cable is low voltage power supply, which can be connected to various devices such as computers, charging heads, mobile power supplies, notebooks, etc., and it is very convenient to supply power anytime and anywhere.