Bluetooth music function works. Custom national flag is available. Custom logo is available on the backpack part. This starry sky projector can create colorful nebula and lifelike dreams, high-definition starlight galaxies and lightly twinkling stars. Different light modes can be switched by remote control or buttons on the backpack. The head of the astronaut can be rotated 360° by magnetic force, projecting the nebula to any place without restriction. In addition, the astronaut's arm can be moved to any poses you want, which is also a good decoration.