They aren't as bright as a lighted nock, but in the morning I usually don't have trouble finding my arrow, late evening is a different story.
View attachment 229179View attachment 229180
They aren't like a lighted nock. I use to shoot light up nocks and you could follow them from 200 yards out. The glow is subtle. However it always works. Once it gets dark it's not hard to find, needs to be in the light for a bit.
Like I said earlier, build your arrows and nock point system around firenocks or just forget them. Nock fit is completely different with each system from every factory nock. The glow vanes weigh a little bit more, about a wrap difference.
I can't talk myself into the firenocks for the money, tried most if not all the others, one failure and what's the point of the money with the cheaper ones? I just gave up on the idea of a light in my arrow.