Deep Blue Daynight Solar PC Watch Review

Deep Blue Daynight Solar

I recently picked up the Solar variant of the Deep Blue Daynight watches. After some time with it on my wrist, I can say it delivers exactly what I was looking for: a rugged, low-maintenance watch with excellent visibility day or night. The following is my review of the watch- My take- The specs are … Read more

How Does Lume Work?

luminescent dial watch

Conventional Lume- Lume, the luminescent material that makes watch dials, hands, and markers glow in low-light conditions, comes in two primary forms: conventional (photoluminescent) lume, which absorbs and re-emits light for a vibrant glow, and tritium (radioluminescent) lume, which shines continuously through radioactive decay. Understanding how these technologies work can help you choose the perfect … Read more

Marathon NAV-D Watch Review

Marathon NAV-D tritium

41mm Black NAV-D Type II – Pilot’s Quartz I’ve just added another gem to my collection of tritium-illuminated timepieces: the Black NAV-D variant of the Pilot Series. I purchased it directly from the Manufacturer in Canada, and it was shipped to me promptly. I previously owned a Marathon GPQ, so I was excited to receive … Read more

How Long Does Tritium Glow?

Tritium for watchfaces

If you are considering a tritium watch, one of the most important questions is simple: how long does tritium glow? Unlike conventional lume, tritium does not need to be charged by sunlight or artificial light. Tiny sealed tritium gas tubes produce a continuous glow around the clock. The catch is that tritium gradually becomes less … Read more

Marathon GPQ Watch Review

Marathon GPQ-D Type II field 34mm

I’ve just added another gem to my collection of tritium-illuminated timepieces: the 34mm Black D variant of the GPQ watch. I originally picked it up because I wanted something true to Marathon’s military heritage, compact in size, and affordable compared to their larger SAR models. What I ended up with is a lightweight, tough little … Read more

How to Charge Tritium Lume

Tritium lume

Debunking the Myth- A common question persists: How do you charge tritium lume? The short answer is, you don’t. This article will clarify how tritium lume works, dispel myths about charging it, and offer practical tips for getting the most out of your tritium-powered lume. This article provides a clear, concise explanation of tritium lume, … Read more

Welcome to tritiumlume!

Tritium tubes on watch

TritiumLume is a personal blog run by Rick Blythe, focused on watches that use tritium-based self-illuminating lume. I explain how tritium tubes work, compare them with conventional luminous paint, and provide guides, reviews, and recommendations across various tritium-equipped watch styles, from tactical and military-influenced designs to everyday models. My site targets enthusiasts and buyers who … Read more