TEC Accessories TEC-T323-3W Isotope Reactor Fob - Titanium housing Holds Three 3x23mm tritium vials

In full disclosure, mine arrived with a broken glass globe. A spare globe comes with the product which is a thoughtful idea from the manufacturer. I contacted TEC Accessories and they responded quickly. They said they haven't had a case of one arriving broken (although another review mentions the same thing) and they offered to send me a couple of spares, which they shipped very quickly. Thanks TEC Accessories!The product itself is very well designed and machined. The metal finish is bead blasted titanium. The 3x22.5 tritium vials fit perfectly and the insert-able plugs install on the top (lid side) of the vial holes and keep the trit vials from moving longitudinally/vertically. Weight is about 16grams with vials installed and perhaps 1gram less without. I installed green, yellow and white vials but will probably replace the white with a green or ice blue, since the white just doesn't have the same 'pop' that the other colors have. I heat anodized mine which accounts for the purple/blue/bronze finish. I would assume this voids any warranties so do at your own risk.Helpful tip; The lid is held in place by a small o-ring that slips down over the "key" ring attachment shaft. The o-ring falls into a groove/detent on the shaft and snug against the lid. If you need to take the lid off, you'll need to overcome the o-ring's friction against the shaft groove/detent. The best way I found to do this is to pull gently on the lid while simultaneously rotating the lid left and right about 1/8th of a turn or 45° back and forth. This seems to work better than simply pulling straight off, which requires greater force. Just remember to pull gently.

I recently purchased this tritium fob and it's become a quick favorite of mine. The visibility of the tritium through the clear glass tubes is a standout feature, markedly superior to other fobs that often hide the glow behind metal. It's a sleek accessory that catches the eye in the dark more than any other vial I've had, ans even dimmer tritium colors can be seen across the room quite easily.While the borosilicate glass adds a refined look and feel, I do have concerns about its durability compared to more robust materials (acrylic, plastic.) They do include a spare tube, but I would rather avoid any chance of breakage to begin with.Still, it's a fantastic little fob, and the best looking one out there as far as tritium visibility goes.

Was hoping it came with a spare glass housing like previous reviewers; unfortunately it seems like it cuts too much into their margins. Customer service kind of coldly directed me towards a $3 replacement. If you're sick of replacing glass lenses, a polycarbonate lens would be a good idea and virtually unbreakable. My foray into pricey tritium fobs is over at least from Tec Acessories.Would rather have the $50 and 3D print something myself.

The guys at Tec Accessories are extremely innovative. In my opinion, this business is one of the top 10 businesses in the EDC world. Very well thought out products and what they make is about the best out there. Most people don't realize how much work goes into developing something that apparently seems so simple, like the Tec-T323-3W Isotope Reactor Fob. But, there's the basic idea and then there's the time to develop a working design within a CAD application. Then you have to create a prototype, maybe it's on a 3D printer, or actually machined on a CNC lathe with some sort of softer more pliable material. During this process you then find out where the weakness and strengths are. Too many weaknesses and it's back to the drawing table and the process starts all over. Eventually you get a proven, workable design and then you create a product made of the final material. In this case, it's titanium. Keep in mind that titanium is extremely difficult to work with as it's an extremely hard metal making it difficult to machine. Something as simple as this FOB may have taken up to a year to develop and that's not including how long this idea was floating around in some clever engineer's head.I currently own over a dozen tritium markers manufactured by Tec Accessories. I have them attached to knives, first-aid kits, firearms, key chains, multi-tools, etc. I have the fobs color coded so that I can reach into my bag in complete darkness and access any important items in an instance.When you purchase a product by Tec Accessories you can be sure that your getting a very high quality product, that's unlike any others.

They should rename this to tritium lantarn keychain, because if they had, I probably would have bought it sooner as this was exactly what I was thinking. It is a bit pricey, but it is a well built niche item. With the vials I ordered seperately it’s bright enough to light up my side of the room on my night stand as well as illuminate my LCD clock at a distance. The all glase shroud helps a lot. I did drop the first glass shround on a tile floor from 4 ft and it shattered, but only partially. Pretty tough glass. Everything fit good and looks good though. The visual assembly instructions weren’t that great though.