These rings can't glow by themself. But these rings absorb enough sunlight during the day to glow up to 2-3 hours at night or any other dark environment. Please radiate them with light again if they are not bright enough.

Feature
This Unique And Heartfelt Fashionable Product Is Beautifully Packaged And Ready For Gift . Our Jewelry Makes A Sentimental Surprise And A Great Gift For Birthdays Anniversaries Mother's Day Or Weddg Celebration
We Offer A Unique Design Which Is A Simple And Exquisite Design That Has Become An Eye-catchg Modern Fashion Ring
Specifications
Features:Luminous Blue Pink Light Heart Rings
Size:Adjustable
Material:Alloy
Package Includes:1PC Heart Rings
Note:
1. Please allow 1-3 cm difference due to manual measurement and 3-5 g for the difference between different colors.
2. Due to the screen difference, the color may be a little different from what you expect, please allow it.