Size diameter:3 cm / (1.18 inchs)
Perfect for any kids who doesn’t like the dark or is a Space fanatic
Luminous principle: luminous powder absorbs all kinds of light and heat first, converts it into light energy storage, and then automatically lights in the dark
Can absorb light and glow in the darkness.
Can be used wall, cellings and any smooth surface.
It is well decorcated in kid’s bedroom.