The watch has a built-in light-emitting light movement.
Press the button at 2 o’clock.
The light-emitting light movement will start to flash, and the colorful lights will flash for about 10 seconds and then go out automatically.
Transparent pvc models do not emit light.
Battery: The watch has two built-in button batteries,
the luminous lamp movement is equipped with CR2025 batteries, and the watch is equipped with LR626 batteries.
The two batteries do not affect each other.