Trigalight® is a brand of mb-microtec ag, the World leader in producing high quality Gaseous Tritium Light Sources (GTLS) for defense, safety and watch markets to name just a few. Trigalight® GTLS are a cost effective, no maintenance light source which glow in the dark from the day they are manufactured for at least 12.3 years. They require no external power or light energy to charge them. They do not have batteries or an ON and OFF switch. Trigalight® are completely maintenance free and are a true place and forget system. All our products are manufactured in Niederwangen, Switzerland. (less)