Water & Dive
Purposeful watches with strong legibility and model-specific water resistance, including the famous Navy SEAL families.
Marcus Tempus
Rugged, lightweight and full of military-inspired character, the Luminox Leatherback SEA Turtle Giant XS.0337 pairs an earthy green dial with vivid orange detailing for a watch that looks considerably more distinctive than the traditional all-black outdoor watch.
The substantial 44mm CARBONOX™ case gives the watch its unmistakable Luminox presence while keeping the overall weight to just 45g. Its green dial is complemented by black Arabic numerals, contrasting luminous hands and a bright orange seconds hand, with a unidirectional rotating bezel completing the purposeful outdoor design.
Luminox's distinctive turtle-shaped case incorporates a protected crown, while the black webbing-style strap reinforces the watch's practical, adventure-ready character. A Swiss Ronda 515 quartz movement, hardened mineral crystal and 100 metres of water resistance provide dependable everyday performance.
And, as expected from Luminox, its self-powered Luminox Light Technology provides constant illumination day and night for up to 25 years without needing to be charged by an external light source.
44mm CARBONOX™ case
Distinctive green dial with orange accents
Swiss Made
Ronda 515 Swiss quartz movement
Luminox Light Technology – constant glow for up to 25 years
Unidirectional rotating bezel
Hardened mineral crystal
Protected crown with security gaskets
Date display at 3 o'clock
Black webbing-style strap
316L stainless-steel buckle
100m / 330ft / 10 ATM water resistance
12mm case height
22mm lug width
Exceptionally lightweight at 45g

Swiss Performance Watches
Performance on the Wrist
Luminox watches combine strong dial contrast, practical case construction and highly visible markers with a distinctly purposeful design language.
The result is a watch that feels equally at home outdoors, on the water or in everyday life — with the visual character to remain unmistakably Luminox.
The Technology
Luminox Light Technology uses tiny borosilicate glass capsules containing micro gas lights on the hands, hour markers and, on selected models, the bezel.
Unlike conventional luminous paint that must first absorb light, LLT is self-powered and designed to provide continuous visibility for up to 25 years.
A Defining Chapter
In 1992, Navy SEAL research and development officer Chief Nick North worked with Luminox to develop a watch suited to the demanding needs of the SEALs.
That collaboration helped establish the Original Navy SEAL 3000 Series and became one of the most recognisable parts of the Luminox story.
Purposeful Materials
CARBONOX™ is Luminox's carbon-based case material, developed for watches where low weight and robust construction matter.
Luminox describes CARBONOX™ as six times lighter than steel and three times lighter than titanium, while also being non-metallic, anti-magnetic and resistant to changing weather conditions.
The Luminox World
Purposeful watches with strong legibility and model-specific water resistance, including the famous Navy SEAL families.
Watches inspired by cockpit clarity, technical readability and the practical requirements of aviation.
Rugged watches designed for everyday adventure, field use and reliable visibility beyond the city.
Choosing Your Watch
Luminox collections include different case materials, movements, crystals, case sizes and levels of water resistance. Some models use quartz movements while others are automatic.
We therefore list the exact technical specification on each Marcus Tempus product page rather than applying one specification to the whole brand.
Care & Water Resistance
Water resistance is not permanent. Luminox recommends that gaskets are inspected and replaced every 18–24 months, or more frequently when a watch is regularly exposed to chlorinated pools or salt water. The exact water-resistance rating should always be checked on the individual model.
Luminox Questions
It is a self-powered illumination system using micro gas lights inside tiny glass capsules to provide continuous low-light visibility.
Luminox states that its self-powered illumination is designed to remain visible for up to 25 years.
No. LLT does not rely on external light to charge in the way conventional luminous paint does.
It is a lightweight carbon-based material used by Luminox on selected watch cases and components.
No. Water resistance varies by model, so the individual watch specification should always be checked.
No. The range includes quartz watches as well as selected automatic models.
Explore Luminox
Explore our current Luminox watches online, or visit Marcus Tempus to see selected models in person.