Characteristics and Interoperability NASA Night Light with 17 Lighting Settings Musical Astronaut Projector Kids Star Projector, Spaceman Galaxy Projector, 360° Rotation, USB Rechargeable, Remote Control NASA Light Projector: Five Key Characteristics Improved Battery-operated and Portable With its non-detachable base, the Astronaut Galaxy Projector Speaker allows you to connect your phone to play music. You can program the Auto Off Timer Design to turn off automatically after 45 or 90 minutes. The starlight projector's head and arm can be rotated 360 degrees to create a variety of poses. Nebulae's color, brightness, and speed can be changed, as can the brightness and speed of sparkling stars. In total, there are 17 modes (8 types of nebula with stars, 8 types without stars, and only stars). Remote control and button key for the projection lamp with a starry sky. To change the color, use the remote control.