Photos appear once Heritus approves image use
Custom Watch CW573 GMT Automatic 40mm
Lugs stay on wrists from about 6.5 in (lug-to-lug rule of thumb)
From Heritus
Built-to-order- 4 weeks turnaround. SKX-SUB Seiko-GMT Master 40mm Automatic Specifications: Seiko NH34A GMT Caliber Automatic 41 Hours Power Reserve Vibrations Per Hour 21,600 bpm Bi-directional Winding Rotor Date Display Complication Regulated @ +/-5 Sec Per Day Characteristics: 316L Grade Stainless Steel Front Sapphire Crystal (Clear AR Coating) Ceramic Bezel Insert Screw Down Crown Window Case Back 5 ATM Water Resistant Unidirectional Bezel Micro Adjustment Dimensions: Case diameter: 40 mm Lug to lug: 48 mm Thickness: 14 mm Lug size: 20 mm Testing: The watch movement accuracy is tested and regulated prior and after assembling. The case is water tested at 5 ATM. Limited Warranty: 12 months limited warranty. The watch includes box, watch instructions, and accessories. We specialize in crafting personalized timepieces tailored to individual client preferences. It's important to note that this particular watch is not manufactured by Seiko and we have no affiliation with, nor do we represent Seiko or any other watch brand.
Specifications
Details and photos come from Heritus’s website, last checked Oct 26, 2026. Specs were read automatically and may contain mistakes.
Case
- Diameter
- 40 mm
- Lug-to-lug
- 48 mm
- Thickness
- 14 mm
- Thickness incl. crystal
- Not listed
- Lug width
- Not listed
- Material
- Not listed
Movement
- Type
- Automatic
- Caliber
- Seiko NH34
- Power reserve
- Not listed
- Functions
- Not listed
Crystal and bezel
- Crystal
- Sapphire
- Bezel
- Not listed
Water resistance
- Rated to
- Not listed
Dial and lume
- Dial
- Not listed
- Lume
- Not listed
Strap
- Strap
- Not listed
Every spec Heritus lists
- Lug size
- 20 mm Testing:
- Thickness
- 14 mm
- Lug to lug
- 48 mm
- Case diameter
- 40 mm
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