The Hardy Marquis Limited Edition features a rare dial illumination system known as GTLS (Gaseous Tritium Light Source). These minute glass vials are filled with the gas tritium and internally coated with phosphor. As the gas decays the electrons emitted excite the phosphor to create a continuous light that is entirely self-powered and up to 100 times brighter than the luminous paint traditionally used on watch hands.

By positioning a GTLS on each watch hand and at every hour marking the result is a watch that can be read in low and zero light conditions without pressing buttons or draining the watch battery.This system enables precision time reading under any condition, in low or zero light. Under normal circumstances the illumination will last for a minimum of 10 years and usually for as long as 20 years, never needing to be charged by daylight or other external energy sources.

What are the benefits of GTLS illumination?

The Nite dial illumination system offers many benefits:

• Clear watch visibility in any light condition, including complete darkness.
• Hands-free dial illumination – ideal whilst fishing, etc.
• Does not require the watch battery to work – eliminating battery drain.
• Does not require charging by sunlight meaning the level of glow is completely unaffected by adverse weather conditions.
• Entirely self powered resulting in maximum reliability.
• The enjoyment of owning a watch with technically innovative features.