About the Lum-Tec Solar Marine 8
The Solar Marine series is back by popular demand! This series was designed from scratch to be the perfect everyday companion. With a smaller 39mm size, light weight, a perfectly symmetrical dial design, and a durable, solar powered movement, the solar marine is packed with features and ready for adventure. This is a great multi-purpose dive watch with extremely high quality construction and the super clean, legible design that has made this one a fan favorite. Updated and upgraded for 2026, this one will exceed all expectations.
Specs:
316L Surgical grade Stainless Steel case with forged and heat treated construction
Micro-polished Titanium Nitride PVD hard coating (drill bit coating)
Rotating bezel and steel insert with luminous PIP
39mm case width
10.7mm case thickness including sapphire
43.5mm lug-to-lug
20mm lug width
300 meters water resistance
Solar powered VS42A movement from Japan
Just 1 minute of sunlight produces a full day of power
6 months power reserve on full charge (5 hours sunlight)
Anti-shock movement mounting system
2mm thick sapphire with double side military grade AR coating
Threaded solid 316L Stainless Steel caseback
Threaded 316L Stainless Steel crown with double Viton® seals
High tech Viton® case gaskets
Nylon military style strap with matched polished PVD hardware
Drilled lugs for easy strap changes
Semi-transparent black solar dial
Grade A BGW9 Super-Luminova dial with metal index surrounds
Premium, diamond-cut hands with A grade BGW9 Super-Luminova
MDV luminous technology on dial and hands
Lifetime free seal cleaning, lubrication and pressure testing
Limited and numbered series of 300 worldwide
2 year limited warranty
Designed, assembled by hand and fully tested in Ohio
The Solar Marine cases are made from 316L Surgical grade stainless steel. We use forged construction to re-align the metal grain structure to increase fatigue strength by 37% over a typical cast steel case. This also eliminates voids and porosity in the metal, allowing for the finest possible finishing level.
A heat treatment is done to improve the stability of the metal during the forging process and to harden the metal surface after finishing.
After a micro polished finish is done by hand, we apply a Titanium Nitride PVD hard coating for good looks and extreme hardness and scratch resistance. This is the same coating that is used for drill bits to reduce wear. After the coating is done, we add a physical vapor deposited anti-fingerprint coating to fill any microscopic pores from the finishing process and leave an even smoother finish that prevents oily smudges and fingerprints on the case.
The thick, Hytrel mounted sapphire is enhanced by military grade anti-reflective coating applied to both sides of the sapphire.
Silicone lubricated, double Viton gasket seals are in the crown and the tightly sealed, threaded caseback to resist saltwater, chemicals and extreme hot and cold environments. Our sealing system has been tested to exceed our 300 meter depth rating by 30% ensuring complete sealing in not only water depths but in all environments.
Our anti-shock movement mounting system allows the movement to absorb impacts ensuring reliability remains even after an accidental drop on the ground or a solid bang against a wall.
A custom grade, thick nylon strap is included. The strap is looped through both sides to ensure the watch is not lost if a springbar becomes damaged. Our nylon straps are much more durable than typical straps of this type. Designed to be easy to re-size and fit just about any wrist with high comfort and a nearly weightless feel.
The luminous elements are printed with over 30 layers of top grade Super-Luminova material over a chemical coated, reflective base. This ensures maximum luminous performance in dark conditions by directing the output forward rather than allowing it to be lost into the dial. The semi-transparent solar dial allows light to reach the solar movement below. Our dials have been tested and verified by RcTritec in Switzerland to be top performers of the Super-Luminova material.
We back our watches with free seal cleaning and lubrication and pressure testing for life, right here in Ohio. We love to see our watches back in after 15+ years of strong service. By offering this service, not only do our customers get a confident ownership experience, we see first hand how our watches hold up over time in the real world and use this information to evolve our engineering and development for future models.
All LUM-TEC watches are designed and engineered in Ohio 100% from the ground up. Every watch is individually assembled here and fully tested to ensure absolute quality. Since 2007, we have quietly produced top quality watches for over 100 different brands around the world, US government, Swat teams and much more. LUM-TEC has always been our ultimate proving ground. The example of our top capabilities. No compromises, ever.
About Lum-Tec Watches
Maximum Darkness Visibility.
Every LUM-TEC watch features exclusive MDV Technology.
This is a special 8 layer application of ultra bright glowing Super-Luminova photo-luminescent material.
MDV hands and dials are extremely visible in all light conditions.
Experience the ultimate wristwatch.
"Our watches are designed with feedback from watch collectors around the world"
Lum-Tec writes: "Our company brings features and quality normally not thought possible without spending thousands of dollars.
We are in the business of making custom and limited edition watches, creating unique designs and pioneering new luminous application technologies to apply to wristwatches."
Standard features in every LUM-TEC watch:
- MDV Technology(registered trademark) Extreme luminous hands and dials.
- 316L surgical grade stainless steel or tungsten carbide.
- Thick top grade sapphire crystals.
- Top grade anti-reflective crystal coatings.
- Top grade straps or bracelets.
- Titanium carbide PVD hard coatings on some models.
- Large case designs. 38mm-50mm sizes.
- Exclusivity. All watches are numbered limited editions.
- Full feature heavy duty movements.
- Lifetime timing adjustments on mechanical models.
- Lifetime battery replacement on quartz models.
- Highest grade packaging and display box set.
- Design, assembling, testing, adjusting and quality control in USA.
Manufacturer warranty information: Where applicable, written manufacturer warranty terms are available free of charge for review before purchase. To request the warranty terms for a specific product, please contact us and provide the product name or SKU, or write to BillyTheTree, LLC, 3665 E Bay Dr Suite 204, #157, Largo, FL 33771 USA.
Please note that certain values, including length, weight, and number of beads/magnets, may vary in items that are available in different sizes. A length of "0" above indicates that this item can be custom-sized, or that different sizes are available. Values are subject to change, and should be viewed as a general reference only.
30-day money-back guarantee
Return for full refund of product price. EXCLUDES PERSONALIZED AND ENGRAVED PRODUCTS. Other restrictions apply, see our return policies page for details.Description
About the Lum-Tec Solar Marine 8
The Solar Marine series is back by popular demand! This series was designed from scratch to be the perfect everyday companion. With a smaller 39mm size, light weight, a perfectly symmetrical dial design, and a durable, solar powered movement, the solar marine is packed with features and ready for adventure. This is a great multi-purpose dive watch with extremely high quality construction and the super clean, legible design that has made this one a fan favorite. Updated and upgraded for 2026, this one will exceed all expectations.
Specs:
316L Surgical grade Stainless Steel case with forged and heat treated construction
Micro-polished Titanium Nitride PVD hard coating (drill bit coating)
Rotating bezel and steel insert with luminous PIP
39mm case width
10.7mm case thickness including sapphire
43.5mm lug-to-lug
20mm lug width
300 meters water resistance
Solar powered VS42A movement from Japan
Just 1 minute of sunlight produces a full day of power
6 months power reserve on full charge (5 hours sunlight)
Anti-shock movement mounting system
2mm thick sapphire with double side military grade AR coating
Threaded solid 316L Stainless Steel caseback
Threaded 316L Stainless Steel crown with double Viton® seals
High tech Viton® case gaskets
Nylon military style strap with matched polished PVD hardware
Drilled lugs for easy strap changes
Semi-transparent black solar dial
Grade A BGW9 Super-Luminova dial with metal index surrounds
Premium, diamond-cut hands with A grade BGW9 Super-Luminova
MDV luminous technology on dial and hands
Lifetime free seal cleaning, lubrication and pressure testing
Limited and numbered series of 300 worldwide
2 year limited warranty
Designed, assembled by hand and fully tested in Ohio
The Solar Marine cases are made from 316L Surgical grade stainless steel. We use forged construction to re-align the metal grain structure to increase fatigue strength by 37% over a typical cast steel case. This also eliminates voids and porosity in the metal, allowing for the finest possible finishing level.
A heat treatment is done to improve the stability of the metal during the forging process and to harden the metal surface after finishing.
After a micro polished finish is done by hand, we apply a Titanium Nitride PVD hard coating for good looks and extreme hardness and scratch resistance. This is the same coating that is used for drill bits to reduce wear. After the coating is done, we add a physical vapor deposited anti-fingerprint coating to fill any microscopic pores from the finishing process and leave an even smoother finish that prevents oily smudges and fingerprints on the case.
The thick, Hytrel mounted sapphire is enhanced by military grade anti-reflective coating applied to both sides of the sapphire.
Silicone lubricated, double Viton gasket seals are in the crown and the tightly sealed, threaded caseback to resist saltwater, chemicals and extreme hot and cold environments. Our sealing system has been tested to exceed our 300 meter depth rating by 30% ensuring complete sealing in not only water depths but in all environments.
Our anti-shock movement mounting system allows the movement to absorb impacts ensuring reliability remains even after an accidental drop on the ground or a solid bang against a wall.
A custom grade, thick nylon strap is included. The strap is looped through both sides to ensure the watch is not lost if a springbar becomes damaged. Our nylon straps are much more durable than typical straps of this type. Designed to be easy to re-size and fit just about any wrist with high comfort and a nearly weightless feel.
The luminous elements are printed with over 30 layers of top grade Super-Luminova material over a chemical coated, reflective base. This ensures maximum luminous performance in dark conditions by directing the output forward rather than allowing it to be lost into the dial. The semi-transparent solar dial allows light to reach the solar movement below. Our dials have been tested and verified by RcTritec in Switzerland to be top performers of the Super-Luminova material.
We back our watches with free seal cleaning and lubrication and pressure testing for life, right here in Ohio. We love to see our watches back in after 15+ years of strong service. By offering this service, not only do our customers get a confident ownership experience, we see first hand how our watches hold up over time in the real world and use this information to evolve our engineering and development for future models.
All LUM-TEC watches are designed and engineered in Ohio 100% from the ground up. Every watch is individually assembled here and fully tested to ensure absolute quality. Since 2007, we have quietly produced top quality watches for over 100 different brands around the world, US government, Swat teams and much more. LUM-TEC has always been our ultimate proving ground. The example of our top capabilities. No compromises, ever.
About Lum-Tec Watches
Maximum Darkness Visibility.
Every LUM-TEC watch features exclusive MDV Technology.
This is a special 8 layer application of ultra bright glowing Super-Luminova photo-luminescent material.
MDV hands and dials are extremely visible in all light conditions.
Experience the ultimate wristwatch.
"Our watches are designed with feedback from watch collectors around the world"
Lum-Tec writes: "Our company brings features and quality normally not thought possible without spending thousands of dollars.
We are in the business of making custom and limited edition watches, creating unique designs and pioneering new luminous application technologies to apply to wristwatches."
Standard features in every LUM-TEC watch:
- MDV Technology(registered trademark) Extreme luminous hands and dials.
- 316L surgical grade stainless steel or tungsten carbide.
- Thick top grade sapphire crystals.
- Top grade anti-reflective crystal coatings.
- Top grade straps or bracelets.
- Titanium carbide PVD hard coatings on some models.
- Large case designs. 38mm-50mm sizes.
- Exclusivity. All watches are numbered limited editions.
- Full feature heavy duty movements.
- Lifetime timing adjustments on mechanical models.
- Lifetime battery replacement on quartz models.
- Highest grade packaging and display box set.
- Design, assembling, testing, adjusting and quality control in USA.
Manufacturer warranty information: Where applicable, written manufacturer warranty terms are available free of charge for review before purchase. To request the warranty terms for a specific product, please contact us and provide the product name or SKU, or write to BillyTheTree, LLC, 3665 E Bay Dr Suite 204, #157, Largo, FL 33771 USA.
Guarantee
30-day money-back guarantee
Return for full refund of product price. EXCLUDES PERSONALIZED AND ENGRAVED PRODUCTS. Other restrictions apply, see our return policies page for details.Additional Info
Please note that certain values, including length, weight, and number of beads/magnets, may vary in items that are available in different sizes. A length of "0" above indicates that this item can be custom-sized, or that different sizes are available. Values are subject to change, and should be viewed as a general reference only.