玻璃發光管

Dropped one into my keychain setup and it picks up light from a quick phone flashlight flash, then glows soft green for hours. Way brighter than the old tritium I had, and the drag feature on the page made it easy to see how it'd look on my gear.

Glued one into my pocket knife and the glow is seriously impressive — it charges in seconds and stays bright for hours. The tube itself feels solid, not flimsy like I expected from glass.

I was skeptical about swapping out my old tritium vial, but this glass tube’s glow is honestly just as bright for the money. The fit is snug in my keychain setup, and after a minute under a flashlight it stays visible all night.