The LCD is coated with phosphorescent paint that absorbs light to make it readable even in the dark. The duration and brightness of the luminous LCD’s glow depends on the intensity and duration of the absorbed light.
The phosphorescent paint used does not contain any radioactive materials.

Usage Example

If the screen is exposed to the light of a standard outdoor LED headlamp (approximately 200 lumens) from a distance of five centimeters for one minute, it will glow in the dark for approximately one hour.
Once the light source is removed, brightness gradually diminishes.