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Rated 4.9 by verified buyers

A titanium glow capsule that shines for 25 years

Self-powered tritium light sealed in aerospace-grade titanium. No batteries, no charging, no off switch. Just light that lasts decades.

Glows 24/7 for up to 25 years
No charging. No batteries. No sunlight needed
Sealed tritium vial — safe for everyday carry
Titanium body with borosilicate glass lens

From$45.90

30-Day ReturnsSealed & SafeFactory Direct Price

Real product · Actual glow · No post-processing

Independent Review

Watch what EDC reviewers think about the Glow Fob.

How Tritium Tubes Work

Inside each sealed glass vial, tritium excites a phosphor coating to create a steady glow. The result is always-on illumination with no battery or charging required.

Glows continuously for years

Hydrogen-3 isotope undergoes natural beta decay inside a sealed glass vial, releasing low-energy electrons nonstop

Needs no charging or maintenance

Beta particles hit the phosphor coating on the inner glass wall, converting kinetic energy directly into visible light

Sealed safely inside a durable capsule

Phosphor emits a constant visible light for up to 25 years — all self-contained, no external energy needed

When sealed, tritium vials are safe to handle. Their beta radiation is too weak to penetrate the glass vial and is easily blocked by paper. Similar light sources are commonly used in watches, exit signs, and aviation instruments.

25yr

Glow lifespan

Ti Gr.5

Aerospace titanium

Batteries needed

Color options

60s

Color swap time

Where you'll actually use it

Not just a gadget. A visibility tool that earns its place on your keys.

Keys & Locks

Find your keyhole faster in dark parking lots, campsites, hallways, and late-night front doors.

Bags & Zippers

Clip it to backpacks, pouches, and zipper pulls so you can find the right pocket in low light without fumbling.

Nightstand & Grab-and-Go

Spot your keys, bag, or gear at a glance before sunrise, after lights out, or on your way out the door.

01 — Material

Machined from Grade 5 titanium for daily carry.

Real Ti-6Al-4V — the same alloy in jet engines and surgical implants. Not coated alloy, not cheap metal. 45% lighter than steel, corrosion-proof, scratch-resistant. It won't rust from sweat, won't corrode in salt water, and won't age on your keyring.

02 — Protection

Built to handle drops, bumps, and everyday carry.

The tritium vial sits inside a spring-loaded shock-absorbing chamber that cushions impact from every direction. In a serious drop, the outer borosilicate glass tube may shatter — but the tritium vial inside stays intact, still glowing. The spring suspension sacrifices the cheap, replaceable glass to protect the expensive tritium vial.

03 — Optics

Borosilicate glass lens. Stays clear for years.

Plastic yellows, scratches, and hazes within weeks. Borosilicate glass — the same material in lab beakers — keeps optical-grade clarity that won't degrade over time. The glow looks as good on year five as day one.

9mm diameter45.5mm lengthTi Gr.5 body3 × 22.5mm tritium tubeBorosilicate window~25 year glow8 colorsTool-free swap9mm diameter45.5mm lengthTi Gr.5 body3 × 22.5mm tritium tubeBorosilicate window~25 year glow8 colorsTool-free swap

Eight colors.
Pick your wavelength.

Each color uses a different phosphor coating, so perceived brightness varies. Green reads the brightest to the human eye, with Yellow close behind — these two are the best picks for a true low-light locator. White, Orange, and Ice Blue land in the middle range: still visible, more balanced in tone. Pink, Red, and Purple are the softest — pick these when you want an ambient accent rather than a beacon. All eight colors share the same 25-year lifespan.

Max visibility

Best for finding keys, bag zippers, and locks in near-total darkness.

GreenYellow

Balanced glow

Visible at a glance, with a less intense look. Great for daily carry.

WhiteOrangeIce Blue

Subtle accent

Gentle ambient glow — more about character than locating things.

PinkRedPurple

Selected: Green

Brightness

100%

30-Day ReturnsSealed & SafeFactory Direct Price

Size & specifications

Overall sizeΦ9mm × 45.5mm

Tritium tubeΦ3mm × 22.5mm

Body materialGrade 5 Titanium (Ti-6Al-4V)

WindowBorosilicate glass

Glow typeSelf-luminous / No charging

Glow lifespan~25 years visible

Colors8 options

IncludesCapsule + keyring (tritium vial included with color variants)

Why this isn't a $5 glow stick

Tritium vs photoluminescent glow paint — the difference is 25 years.

Antdesign

Glow Paint

Glow duration

25 years

2-4 hours

Self-powered

Yes

Needs light

Body material

Grade 5 Ti

Plastic

Lens

Borosilicate

N/A

Maintenance

Zero

Re-charge daily

Drop protection

Shock-absorbing

None

Color swap

60 seconds

What customers are saying

4.9

All from verified buyers

"This key fob is actually extremely cool. If you get the green, which you probably should, it is the brightest. A few people have already asked me where I got it. Highly recommend!"

Christopher W.

Green · Verified Purchase

Brighter than expected

"Build quality is far above other tritium key fobs I have purchased. The ease of changing out the vials allows me to switch colors to match my backpack for the day."

Jason H.

Green · Verified Purchase

Feels premium in hand

"Coolest key chain I got. The everlasting glow is a nice pop when keys are hanging in the ignition while driving at night! The titanium is crisp and clean."

Edy V.

Green · Verified Purchase

Perfect size for keys

"Very well milled titanium and the tritium is extremely bright. Love it and need more now!! Construction is excellent."

Matt

Green · Verified Purchase

Worth the price

"The green glow is just right for finding keys in the bottom of a work bag. It's so good I've ordered more for my wife and sister."

Anonymous

Green · Verified Purchase · Canada

Great gift

"Exactly as advertised, no charge needed. I like this one way better than the steel competitor — people say those bend. This one is titanium. Got mine in green for maximum brightness."

Nick

Green · Verified by Shop

Much better than cheap ones

"Great addition to my keychain. Extremely lightweight and provides a nice glow to help locate my keys in the dark. Well designed, not too big to hang on keys or a pack."

Brian B.

Green · Verified Purchase

Perfect size for keys

"Gift for a friend, nice size and everything looks as advertised. Love the design and it's so easy to find my key fob in the dark!"

Verified by Shop

Great gift

"I love these fobs! The construction is excellent. Love the ability to replace the glass and change the trit tube later. A+ five stars, would recommend!"

David B.

Pink · Verified Purchase

Worth the price

30-Day ReturnsSealed & SafeFactory Direct Price

Swap colors in under 60 seconds

No tools. No manual. Just your thumbs.

Twist off the tail cap

Screw thread plus O-ring seal — it won't loosen in your pocket. Two turns and it's free.

Slide out the glass tube

Unscrew the tail cap and the glass tube holding the tritium vial slides right out.

Seat the new tube

Drop in your chosen color, snap the plug home, slide it back in.

Done. Already glowing.

Tighten the cap, pocket it. Green on Monday, ice blue by Friday.

Frequently asked questions

Yes. The tritium is hermetically sealed inside borosilicate glass, inside titanium. Beta particles cannot penetrate skin or glass. These devices are NRC-exempt in the US and legal to carry worldwide. You'd absorb more radiation from a banana.

Bright enough to find your keys, locate a lock, or spot your bag in total darkness. It's a locator beacon, not a flashlight. Green is the brightest color; purple is the most subtle.

Tritium has a half-life of 12.3 years, so after ~12 years it's at 50% brightness. After ~25 years it's still faintly visible. Most users find it practically useful for 15+ years before swapping the tube.

Yes. Tritium keychains are permitted in carry-on and checked luggage by TSA and IATA. They're classified as consumer self-luminous products, not hazardous materials.

We own the CNC machines. Design, manufacturing, and shipping are all in-house. No middlemen, no distributor markup. You're paying factory-direct pricing for a product others retail at 2-3x.

It depends on the variant you choose. If you select a color (Green, Ice Blue, etc.), you receive the titanium capsule, keyring attachment, and a pre-installed tritium vial in that color — ready to glow out of the box. If you select No Tritium (Shell Only - No Glow), you receive the titanium capsule and keyring attachment without a tritium vial, for customers who already own vials or want to source their own.

We recommend inspecting every vial as soon as you receive it. Here's how to verify yours in a few simple steps:

Find a completely dark space — a closet or bathroom with lights off.
Place the vial in total darkness. Let your eyes adjust for 30 seconds.
An intact vial glows steadily on its own — no light charging needed.
No glow or needs light to activate? Contact us within 5 days of delivery.

Every tritium vial and borosilicate glass tube is individually inspected before shipment. The item must be inspected immediately upon opening the package on the delivery date and before any handling, test-fitting, installation, or use. The tritium vial must be checked in a completely dark environment to confirm normal glow, and the borosilicate glass tube must be carefully inspected for any cracks, chips, or other visible damage.

The delivery date and time shall be determined solely by the carrier's tracking information and delivery confirmation record. Any issue must be reported to us by email no later than the end of the day following delivery. If any defect is found, photos of the defective tritium vial or glass tube together with the original packaging must be provided. Claims reported after this deadline will not be accepted.

Because both the tritium vial and the outer glass tube are fragile glass components, any item that has been handled beyond initial inspection, test-fitted, installed, or otherwise used is not eligible for warranty coverage, replacement, refund, or compensation.

Built to glow for decades.
Built to stay on your keys.

Grade 5 titanium. Tritium core. Borosilicate glass.
No charging. No maintenance. Just light that lasts.

30-Day Returns · Sealed & Safe · Factory Direct Price

A titanium glow capsule that shines for 25 years

Independent Review

How Tritium Tubes Work

Glows continuously for years

Needs no charging or maintenance

Sealed safely inside a durable capsule

Where you'll actually use it

Eight colors.Pick your wavelength.

Size & specifications

Why this isn't a $5 glow stick

What customers are saying

Swap colors in under 60 seconds

Frequently asked questions

Eight colors.
Pick your wavelength.

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