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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.

Swapped out my old tritium vials for these and the glow is honestly way brighter than I expected, especially after a quick charge under a lamp. The tube fits snugly into my EDC gear without any wobble, and it drags a nice subtle light trail when I move it around in the dark. Definitely a solid upgra

The glow is surprisingly strong for something this small, and it charged up fast after a few minutes under a bright light. Fits perfectly in my EDC organizer, though I wish it came with a couple of color options to mix things up.