Browse our range of self-illuminated markers and tactical devices
Find it fast in the dark
NO BATTERIES, NO CHARGING, LONG-LASTING
SAFE AND ABSOLUTELY RELIABLE
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Some of our Products
£0.99
MK2 Black ArcMarker
In Stock
£37.00
Violet Glow in the Dark Alarm Clock
In Stock
£8.99
Purple Kit Marker for Bags, Equipment and Tents
In Stock
£0.99
MK2 Desert Sand ArcMarker
In Stock
£84.99
Blue Firefly Navigator Compass
In Stock
£8.99
UV Blue Kit Marker for Bags, Equipment and Tents
In Stock
£0.99
MK1 Desert Sand ArcMarker
In Stock
£6.99
Ice Blue MiniGlow Marker Compact and Eye Catching
In Stock
£69.50
Firefly Necklight Torch
In Stock
£13.99
Yellow MegaGlow Safety Marker
In Stock
£11.99
White Super Kit Marker for Location, Item Visibility
In Stock
£84.99
Military Green Firefly Navigator Compass
In Stock
£11.99
Orange Super Kit Marker for Location, Item Visibility
In Stock
£8.99
Orange Kit Marker for Bags, Equipment and Tents
In Stock
£9.99
White Micro Fixed Marker - Pack of 3
In Stock
£8.99
Red Kit Marker for Bags, Equipment and Tents
In Stock
It's Dark Out There!
Self-Illuminating
Our products use gaseous tritium as the power supply. As the gas decays, a constant stream of radioluminescent light is generated that becomes visible as ambient light levels fall.
Lasts up to 15 Years
These products are in it for the long run! No recharging, batteries, switches, or spare parts are needed during their uniquely reliable service life.
Quality Products
Firefly products are routinely used all over the world by those operating in low-light and darkness. Their unique reliability to work normally even in the most adverse climatic conditions helps to enhance operational efficiency and safety.
Our Blog
$30000 a gram. Tritium is one of Earth's most expensive substances
Doug B.
17 November 2017
Interesting Articles

$30000 a gram. Tritium is one of Earth's most expensive substances

Tritium is Expensive! Cost: $30,000 per gram.  Gaseous Tritium is also used in self-luminous fire safety signs which offer users the most advantageous life-cycle cost of any permanantly illuminated fire safety sign. Typically having a service life of 10+ years, self-luminous signs need no technical maintenance or spare parts during that time....

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How do things glow in the dark?
Doug B.
10 October 2017
Home

How do things glow in the dark?

Radioluminescence Luminescence is the emission of light by materials that are relatively cool. This is different from the light emitted from incandescent materials, such as burning charcoal, wood, paper etc., as the light in those cases results from heat. Since the emission of light is done by relatively cooler materials, luminescence is also called cold-body radiation. Gaseous Tritium's...

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