PRE-ORDER ITEM
Projected release: September 2026. Release dates are estimates and may change due to production or delivery schedules - Current pre-order pricing includes a 15% discount.
The LÜM-TEC Combat B74 is a compact 39mm true GMT automatic watch built for travelers, professionals, and collectors who want independent local-hour adjustment, premium materials, and proven field-watch durability.
The B74 is powered by a Miyota 9075 ultra-slim automatic movement operating at 28,800 vibrations per hour. Its true GMT function includes an independently adjustable jumping hour hand, hacking, and hand-winding capabilities, allowing the wearer to adjust local time without disturbing the reference-time display.
Its forged and heat-treated 316L stainless steel case features a fine bead-blasted finish, anti-fingerprint coating, curved sapphire crystal, exhibition caseback with sapphire window, and 200-meter water resistance.
The three-layer dial combines matte black and charcoal-gray finishes with premium diamond-cut hands and LÜM-TEC’s proprietary MDV® luminous technology. Designed, assembled by hand, and fully tested in Ohio, the Combat B74 is limited to only 500 individually numbered watches worldwide.
Features
- True GMT automatic movement
- Independently adjustable jumping local-hour hand
- Ultra-slim Miyota 9075 Japanese automatic movement
- 28,800 vibrations per hour
- Hacking and hand-winding functions
- Movement timing adjusted in six positions after assembly
- Proprietary anti-shock movement mounting system
- Forged and heat-treated surgical-grade 316L stainless steel case
- Compact 39mm case design
- Fine bead-blasted case finish
- Anti-fingerprint surface treatment
- Curved sapphire crystal with military-grade inner anti-reflective coating
- Exhibition caseback with sapphire viewing window
- Threaded crown with dual diamond seals
- High-performance Viton® gaskets
- 200-meter water resistance
- Three-layer matte-black and charcoal-gray dial
- Premium diamond-cut hands
- MDV® luminous technology
- Swiss X1-grade C3 Super-LumiNova
- Two military-style nylon straps included
- Designed, assembled by hand, and fully tested in Ohio
- Individually numbered edition of 500 watches
- Two-year limited warranty
- Lifetime timing adjustment, seal cleaning, and pressure testing
Specifications
- Model: Combat B74 GMT
- Movement: Miyota 9075 ultra-slim automatic
- GMT Function: True GMT with independently adjustable jumping local-hour hand
- Movement Functions: GMT, hacking, and hand winding
- Frequency: 28,800 BPH
- Regulation: Adjusted in six positions after assembly
- Case Material: Forged and heat-treated 316L stainless steel
- Case Finish: Fine bead blasted with anti-fingerprint coating
- Case Diameter: 39mm
- Case Thickness: 13.8mm
- Lug-to-Lug Length: 46mm
- Lug Width: 20mm
- Crystal: Curved sapphire with military-grade inner anti-reflective coating
- Caseback: Exhibition caseback with sapphire window
- Crown: Threaded with dual diamond seals
- Gaskets: High-performance Viton®
- Water Resistance: 200 meters
- Dial: Three-layer matte black and charcoal gray
- Hands: Premium diamond-cut hands with back-filled X1 C3 luminous application
- Lume: MDV® technology with Swiss X1-grade C3 Super-LumiNova
- Lume Color: Green
- Included Straps: One black and one desert-tan military-style nylon strap
- Strap Hardware: Hardened titanium-carbide coating
- Production: Limited and numbered series of 500 worldwide
- Warranty: Two-year limited warranty
True Traveler GMT Function
The Miyota 9075 movement provides a true traveler-style GMT complication. The local-hour hand can be moved forward or backward independently in one-hour increments, allowing the wearer to adjust to a new time zone without stopping the watch or disturbing the minutes, seconds, or reference-time display.
This makes the Combat B74 especially useful for frequent travelers, pilots, internationally connected professionals, and anyone who needs to monitor more than one time zone.
Compact 39mm Case Design
The Combat B74 brings advanced GMT functionality to a compact 39mm case. Its 46mm lug-to-lug length and curved lug profile allow the watch to wrap naturally around the wrist, making it comfortable for a wide range of wrist sizes.
The forged and heat-treated 316L stainless steel case provides a strong foundation while the fine bead-blasted finish creates a refined, low-glare appearance. An anti-fingerprint coating helps resist oily marks and smudges.
Precision Automatic Performance
The Miyota 9075 automatic movement operates at 28,800 vibrations per hour and includes hacking and hand-winding functions. Each movement is adjusted in six positions after assembly to help maximize real-world accuracy.
LÜM-TEC’s proprietary anti-shock movement mounting system helps protect the movement from accidental drops and hard impacts while maintaining dependable performance.
Three-Layer Dial and Maximum Darkness Visibility
The three-layer dial combines matte black and charcoal-gray finishes for depth and contrast. Premium diamond-cut hands provide crisp definition, while LÜM-TEC’s MDV® luminous technology uses Swiss X1-grade C3 Super-LumiNova for excellent low-light visibility.
The luminous material is applied over a specially treated reflective base that directs more output through the front of the watch. The result is a strong green glow and improved nighttime readability.
Protection from the Elements
The curved sapphire crystal provides excellent scratch resistance and a wide viewing angle. Its military-grade inner anti-reflective coating reduces glare and improves dial clarity.
A threaded crown with dual diamond seals, a secured exhibition caseback, and high-performance Viton® gaskets help protect the movement from water, salt, chemicals, and temperature extremes. The Combat B74 is rated for 200 meters of water resistance.
Two Military-Style Straps Included
The Combat B74 includes two 20mm military-style nylon straps: one black and one desert tan. Both straps include hardened titanium-carbide hardware to complement the watch’s rugged construction.
The pass-through strap design runs behind both spring bars, helping keep the watch attached if one spring bar becomes damaged.
Ohio-Assembled Quality
Every Combat B74 is designed, assembled by hand, and fully tested in Ohio. Each watch includes complimentary lifetime movement timing adjustment, pressure testing, and seal cleaning.
The Combat B74 GMT is backed by a two-year limited warranty and is limited to only 500 individually numbered pieces worldwide.
