This is a listing for one ''Pharos'' Titanium Pen, with one pre-installed Tritium Isotope, 3mm x 22.5mm removable vial (colors available: green and ice-blue).
 
The ''Pharos'' Pen is made of polished titanium metal, available in two pen bolt finishes (stonewashed and polished) and uses a high quality, black ink, Fisher Space Pen Refill (included). Thanks to the Fisher refill, the pen can write in water, upside-down or even in space, no gravity needed!
The tritium vial keeps the pen easy to locate at all times, making it also a great conversation piece.
 
The pen bolt, is used to deploy the pen tip and retract the tritium vial. The bolt button is also used as a design safety feature; when open, you can't use the pen clip and prevents the pen tip from damaging a shirt pocket by accident. The pen can be easily disassembled and both the pen refill and tritium vial can be replaced when needed.
Warning: Always remove the pen clip first when dissasembling the pen, to avoid scratches on the pen body when unscrewing the top.  
 
What you get with every ''Pharos'' Pen Order:
> 1 x ''Pharos'' Titanium Pen (1 x Fisher refill + 1 x Tritium vial if selected)
> 1 x Leather protective pen sleeve

''Pharos'' Titanium Pen Specs
Pen length: 144mm
Pen body width:11mm (bolt button/pen clip excluded) / 16mm (bolt button/pen clip included)
Pen weight 37 gr

Tritium (symbol T or 3H, also known as hydrogen-3) is a radioactive isotope of hydrogen and one of the most valuable substances on earth, with a market price of 30.000$ per gram.
The Tritium vials used are light sources of gaseous tritium isotope, hermetically sealed in glass.
This radioactive tritium gas, glows completely on its own in a very safe manner, without needing to be 'charged' with light as required by most phosphorescent glow in the dark products. The glow will be subtle and visible in low-light conditions; the darker the better. It will not be visible in daylight or well-lit areas. The light produced is literally ''on'' at all times, it's intensity isn't reduced after a few hours and will last non-stop for about 20 years. This is truly a ''nuclear powered'' pen!