Features: Glows continuously for 15 years Bright and visible unique clear white glow Completely contained and self-powered Perfect for space flight and aviation,instrument,war industry and collimator.Or decorations,horologe,luxury and glasses.
I opened the package and saw my vials and got really excited because I'm going to use them in a custom green lantern ring and they were perfect size. When I looked at the vials, I ...view morecouldn't tell if they were glowing or not. I had never read they needed to be charged so I a little dumbfounded. When it started to get dark, they had a faint glow so I knew they were glowing but the amount was, well, disappointing. The whole reason for getting them was for a glowing ring. I have to reevaluate my project. view less