Lumis - from Latin "lumen," light. What is missing in the depths of the water is just that: light, especially where the blue of the water becomes deeper and darker and fades into black.

That's why the best professional diver's watches must have luminescent hands and markers, and the more bright these are, the better for the diver. However, the substance that was originally used to ensure nighttime visibility was radium, an element that was hazardous to health, especially to those who applied it to watch hands and dials. In time, the watch industry replaced radium with tritium, and eventually, with another material known today by the generic name of "lumen", which is completely safe but less bright in the dark. 

tritum watch

Enter Davosa Argonautic Lumis, the brightest

Davosa has worked hard on the goal of updating this brightness, and has finally made an even more beautiful and brighter watch. The new Davosa Argonautic Lumis incorporates several improvements, and the most evident one is the use of luminous elements made of tritium gaseus light sources (TGLS) in green color.

The TGLS are sealed borosilicate glass microtubes, which are extremely safe, and contain an atmosphere of tritium gas, which is 66% brighter than the ones used in the previous version of the watch, and designed to provide at least ten years of the same high intensity of illumination under all circumstances.

The dial of the watch has also been rethought, introducing silver plating and a wave pattern that enhances readability. In addition, the hands have also been redesigned to ensure maximum visibility.

tritium watch in the dark

Davosa Argonautic Lumis presents Beyond Steel®

In addition, a new material has been introduced to equip the unidirectional rotating bezel, which has also been redesigned to provide a better grip: the Beyond Steel® insert, a special alloy heavier than gold and harder than diamond, perfect and unalterable even in the most extreme conditions.

Small aesthetic and functional touches that have the effect of making this timepiece more beautiful and elegant, ready to assist you in the most diverse conditions, from exploring a wreck to an important meeting in the office. Even if suddenly you experience a blackout!

tritium watch lume

A reliable and accurate "heart" and a perfect body

The new Davosa Argonautic Lumis retains the automatic movement that has made it the choice of thousands of enthusiasts: the DAV3021 caliber, a caliber based on the reliable Sellita SW200-1 with around 40 hours of power reserve, protected by a screw-down case back that ensures the watch 300 meters of water resistance.


This splendid watch will be available from late 2022 in three different color variants: metal, with Beyond Steel® bezel insert, blue and black with ceramic insert, and featuring two different bracelets, a traditional three-order link one or a Milanese mesh for you to choose. Oh, and it also look fab in our choice of select NATO straps - check them!

The website is NOT affiliated in any way with Audemars Piguet, Franck Muller USA, Inc. Richard Mille or Richemont Companies, Seiko, or any other brand which is not Davosa Swiss. Rolex is a registered trademark of Rolex USA. Davosa-USA website is not an authorized dealer, reseller, or distributor for Rolex and is in NO WAY affiliated with Rolex SA or Rolex USA or any other brand besides Davosa Swiss.
September 17, 2022 — Davosa Editor

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