Using the Discovery Kids 2 - in - 1 LED Starlight Lantern is easy. To use it as a star projector, simply turn it on and adjust the focus to get clear star projections on the ceiling or wall. If you want to use it as an LED light, just twist the knob. When taking it out, use the fold - down carry handle. Make sure the batteries are installed correctly before use. For maintenance, keep it clean by gently wiping it with a dry cloth. Avoid getting it wet, as water can damage the internal components. Don't expose it to extreme temperatures. If you're not using it for a long time, remove the batteries to prevent corrosion.