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
£84.99
Desert Sand Firefly Navigator Compass
In Stock
£24.99
Firefly Champion Spark Marker- Green
In Stock
£13.99
UV Blue MegaGlow Safety Marker
In Stock
£44.59
Vega Light-Pull - Dome
In Stock
£22.00
Largest TwinGLow Safety Marker
In Stock
£13.99
Red MegaGlow Safety Marker
In Stock
£8.99
Red Kit Marker for Bags, Equipment and Tents
In Stock
£13.99
Pink MegaGlow Safety Marker
In Stock
£5.99
Orange Bivvy Marker for Zip Visibility
In Stock
£37.00
Cool Grey Glow in the Dark Alarm Clock
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
£11.99
Yellow Super Kit Marker for Location, Item Visibility
In Stock
£9.99
Green Micro Fixed Marker - Pack of 3
In Stock
£6.99
Orange MiniGlow Marker Compact and Eye Catching
In Stock
£9.99
Red Micro Fixed Marker - Pack of 3
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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