The light of the helmet, without being visible illuminates the face in the absence of light.
The electronic system is automatically controlled by a sensor that detects the absence of light and automatically controls
lighting LEDs.
When the sensor detects the presence of light (in the morning for example) the lights goes automatically off.
The power is provided by two 1.5V AAA batteries installed in the aircraft that are not visible from the outside.
The effect is gorgeous at night. The system is fully automatic, no need to touch the figure.