Lum-Tec Combat B72 | USA Assembled Field Watch with MDV Lume

The Lum-Tec Combat B72 combines an inverse-lume dial, a gunmetal titanium carbide PVD-coated 43 mm steel case, and a Swiss Ronda 515 quartz movement. The dial uses X1-grade C3 Super-Luminova as part of Lum-Tec's MDV® luminous technology, backed by 200 meters of water resistance, a curved sapphire crystal, and two included nylon straps, one black and one gray.

Hand assembled and tested in Mentor, Ohio, the B72 is limited to 500 numbered pieces worldwide. The CGA Company is an authorized Lum-Tec dealer, offering this watch new with free USA shipping.

The Combat B72 is part of Lum-Tec's Combat B series, the field watch line Lum-Tec has kept refining since the first Combat B1 arrived in 2007. Lum-Tec says Combat B watches have been battle tested in real military applications and in environments from deserts to freezing mountaintops, and that they are trusted by pilots, ground soldiers, snipers and mountain climbers. Lum-Tec says the Combat B is comfortable on the wrist, legible and accurate, and that its anti-shock capability is well proven in the field.

Specifications

• Case width: 43 mm, forged 316L surgical-grade stainless steel
• Thickness: 13.6 mm including domed sapphire
• Lug to lug: 51.5 mm (lugs curve down steeply, so it wears like roughly 46-47 mm, per Lum-Tec)
• Lug width: 22 mm
• Coating: Military-grade titanium carbide gunmetal PVD hard coating
• Finish: Bead blasted, with anti-fingerprint coating; heat-treated for hardness
• Water resistance: 200 meters
• Movement: Swiss Ronda 515 (battery powered)
• Shock protection: Anti-shock movement mounting system
• Crystal: Curved sapphire with military-grade DLC anti-reflective coating on the inside
• Caseback: Threaded 316L stainless steel
• Crown: Threaded, double Viton® seals
• Gaskets: Viton® gaskets
• Dial: Inverse lume dial with X1-grade C3 Super-Luminova
• Hands: Diamond-cut
• Lume: MDV luminous technology on dial
• Straps included: 2 heavy-grade nylon military straps (one black, one gray) with gunmetal PVD hardware
• Warranty: 2-year limited warranty
• Edition: Limited and numbered, 500 pieces worldwide
• Assembly: Designed, assembled by hand and fully tested in Mentor, Ohio

Construction

The B72 case is forged from 316L steel and heat treated. Lum-Tec says forging adds about 37% fatigue strength over a cast case, and that the bead-blast finish creates a micro work-hardened surface that improves scratch and ding resistance by 8-10%. A gunmetal titanium carbide PVD hard coat and an anti-fingerprint layer finish it.

The slightly domed sapphire is Hytrel mounted and AR coated on the inside to cut glare. Double Viton seals protect the crown and the threaded caseback. According to Lum-Tec, the sealing has improved by more than 200% since the original Combat B1, and it is tested to 30% beyond the 200 m rating.

Heat treatment does two jobs on this case: it keeps the steel stable while it is being forged and hardens the surface once finishing is done. The glare-cutting layer on the inside of the sapphire is a military-grade DLC anti-reflective coating. The case seals are there to stand up to salt water, chemicals and very hot or very cold conditions, not just water pressure, and if the watch is dropped on a hard floor or knocked against a wall, the anti-shock mount lets the movement absorb the hit.

Fit and Straps

The lugs curve down sharply, so the 51.5 mm lug-to-lug wraps even small wrists. The two included heavy nylon straps, one black and one gray, pass through both spring bars, so the watch stays secure even if one spring bar fails.

Lum-Tec says its nylon straps are more durable than typical straps of this type and are designed for easy adjustment, a secure fit and minimal weight on the wrist.

MDV® Lume

The inverse dial is printed with many layers of X1-grade C3 Super-Luminova over a reflective base, which sends the light forward for strong contrast in the dark. Lum-Tec says RcTritec in Switzerland verified its dials as top Super-Luminova performers.

Lifetime Service

Lum-Tec includes free lifetime battery replacement, seal cleaning and pressure testing, carried out in Ohio. Lum-Tec says it regularly sees its watches come back for service after 15 or more years of use, and it puts what it learns from them into new designs. Lifetime services are provided by Lum-Tec under Lum-Tec's terms, not by The CGA Company; for service, contact service@lum-tec.com.

Hand Assembled and Tested in Mentor, Ohio

Lum-Tec says its watches are designed and engineered in Ohio from the ground up, and every Combat B72 is hand assembled and individually tested in Mentor, Ohio, using international and domestic components; the movement in this model is the Swiss Ronda 515 quartz. Lum-Tec says that since 2007 it has produced watches for more than 100 brands around the world, the U.S. government and SWAT teams.

Frequently Asked Questions

What movement is inside?
A Swiss Ronda 515. Lum-Tec replaces its battery free for life.

Will it fit a smaller wrist?
Yes. The steeply curved lugs make the 51.5 mm lug-to-lug wear like roughly 46-47 mm.

Which straps come with it?
Two heavy nylon military straps, one black and one gray, with gunmetal hardware.

How water resistant is it?
200 meters.

Where is the Combat B72 assembled?
Lum-Tec hand assembles and tests every Combat B72 in Mentor, Ohio, using international and domestic components. The movement is the Swiss Ronda 515 quartz.