Isotope Photon Fob - Titanium Lantern Design Housing for 3x23mm Tritium Vial (Not Included) - Everyday Carry Tritium Keychain Accessory - Cool Keychains Accessories

Just want to make sure people realize it is only the holder, but I have had this on my keychain for months now in my pockets with other keys and things and it has held strong. No problems what so ever. I gave it a 4 for brightness because it does have a big viewing area but the brightness isn't really determined by the holder!Overall I highly recommend as a holder for your tritium vial

Originally I bought this because (a) the fob should supposedly withstand drops better, and (b) the borosilicate glass provides an extra layer of reduction in induced Bremsstrahlung x-rays caused by beta radiation escaping the vial and hitting the titanium outer shell.Anyways, I have a few concerns with this fob:1. The glass vials actually feel pretty exposed compared to my other TEC fobs. I can easily imagine something hitting the side and cracking it. Too much exposed surface area.2. With how fragile the borosilicate glass enclosure feels, I would have liked for TEC to include a couple spares, since these will inevitably crack.3. Due to the spring-loaded mechanism, the fob is a bit bigger than most other fobs that fit 22.5x3mm tritium vials.4. The vial is a fingerprint magnet and over time it'll look pretty smudged.

Cool looking hope I have an easy time getting a tritium for it. But I do like it.

Overall great quality would highly recommend to anyone looking for a great product at a great price.

Well, like the title suggests, it lasted 5 whole months. And for $80+ dollars, is that worth it??? NO!!! Absolutely not. Hell, not even at $20 is it worth it. Skip the future frustration and steer clear of this one.