Tudor Black Bay Pro GMT 39mm ZF Black Dial Steel Bracelet
Craftsmanship & Technical Specifications
Watch Specifications & Build Details
Most buyers can spot a low-tier copy from across a table by its thick bezel lip and jerky 21,600 vph seconds hand. The Tudor Black Bay Pro GMT 39mm ZF Black Dial Steel Bracelet by ZF Factory solves both: it runs the high-beat Dandong DD3285 True GMT with Independent Hour Hand (70-Hour Reserve (28,800 vph)) inside a slim 39MM × 12.1mm (Bi-directional 24-Hour Bezel) housing milled from Solid 904L Oystersteel (Satin & Mirror Finished).
Calibre Stability, Power Reserve & Case Finishing
From the font weight on the dial transfer printing to the micro-engraved clasp interior, every component is built to 1:1 tolerances. The sapphire crystal sits flush with the bezel ring and features internal anti-reflective treatment for zero-glare viewing.
Direct Factory Sourcing & Buyer Protection
We never ship blind from a warehouse shelf. Within 48 hours of ordering the Tudor Black Bay Pro GMT 39mm ZF Black Dial Steel Bracelet (Ref. SW-23426), our watchmakers film your watch running live on the timegrapher and pressure tester so you can verify dial alignment, amplitude, and beat error firsthand. Once approved, it dispatches via customs-cleared express courier with a 3-year mechanical warranty.
Solid 904L Oystersteel vs 316L Stainless Steel: Metallurgy & Corrosion Test (2026)
Understand the difference between Rolex 904L Oystersteel and 316L stainless steel, including corrosion resistance, weight feel, and brushed-and-polished finishing.
Read Complete Technical ComparisonEvery timepiece at SwissClone undergoes a 48-hour timegrapher inspection and waterproof pressure test before insured worldwide dispatch. Explore related collections and matching references below:
Technical Specifications Matrix
| Manufacture & Reference | Tudor Black Bay Pro GMT 39mm ZF Black Dial Steel Bracelet |
|---|---|
| Factory | ZF Factory (1:1 Best Edition) |
| Movement Architecture | 1:1 Swiss Super Clone Automatic Movement (28,800 vph Smooth Sweep) |
| Case Metallurgy | Solid 316L Stainless Steel (Exact 1:1 Weight & Finish) |
| Crystal & Lens | Double AR Coated Scratchproof Sapphire |
| Water Resistance | Vacuum Pressure Tested to 50m (5 ATM) |
| Luminescence | Swiss Super-LumiNova Luminescent Coating |
| Warranty | 3-Year Mechanism Warranty + Post-Payment QC |