ZF Factory Tudor Black Bay GMT S&G M79833MN-0001
An uncompromising execution of Tudor’s two-tone travel watch, highlighted by ZF’s mastery of the Root Beer bezel and jumping-hour GMT mechanics.
Powered by Custom Asian GMT Caliber
The engine driving this replica is a heavily modified Asian automatic movement designed to replicate the functionality of the genuine MT5652. Most notably, it features a jumping local hour hand, allowing the wearer to adjust the main hour hand in one-hour increments without stopping the balance wheel. This mechanism is directly linked to the date wheel, enabling forward and backward date setting via the hour hand. All movements are subject to our strict QC standards prior to dispatch.
⏱ Accuracy Profile:
Standard clone base movements in this configuration typically operate at ±10–15 seconds per day, regulated prior to shipping to ensure reliable daily timekeeping.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Jumping local hour, independently adjustable 24-hour GMT hand, linked date display
- ✅ Winding Direction: Bidirectional automatic winding
Technical Specifications
THE BUILD316L Steel & 18K Gold Plated
Measuring a substantial 41mm in diameter and 14.6mm thick, the case provides a heavy, tool-watch presence weighing approximately 185-190g on a full bracelet. The alternating brushed and polished finishes contrast sharply with the gold-plated crown.
THE DIALMatte Black Gilt
The dial exhibits a highly accurate micro-grained matte texture. Applied indices feature precise gold-plated borders, filled with Super-LumiNova for strong low-light visibility. The snowflake hands match the vintage gilt aesthetic perfectly.
THE BEZELAnodized Aluminum Insert
Operating on a 48-click bidirectional mechanism, the bezel features the correct matte black and brown split. ZF successfully replicates the muted, slightly faded tones of the genuine Root Beer insert, complete with gilt numerals.
THE BRACELETS&G Rivet Style
The three-link bracelet features stepped rivet heads on the outer links and 18K electroplated gold mid-links. It secures via a traditional fold-over safety clasp, accurately omitting the T-fit system as per the genuine M79833MN-0001.
Why ZF Factory for This Reference?
Many collectors ask: “Why not GS Factory or TW?”
ZF Factory is universally recognized as the premier manufacturer for the Black Bay GMT series. Their specific advantage lies in the bezel color calibration; while rival factories often produce overly saturated or glossy brown inserts, ZF achieves the exact matte, vintage-faded tone of the genuine aluminum. Furthermore, ZF’s execution of the 48-click bezel mechanism offers a tactile resistance that closely mimics OEM tolerances.
Full Disclosure: The 18K gold electroplating on the bracelet mid-links, while visually accurate in tone, is inherently vulnerable to deep scratches over time compared to solid gold, and the 48-click bezel may exhibit marginal back-play.
Data Sheet
| MODEL REFERENCE |
M79833MN-0001 |
| FACTORY / VERSION |
ZF Factory Edition |
| MOVEMENT |
Custom Asian Automatic GMT (Jumping Hour) |
| CASE MATERIAL |
316L Stainless Steel & 18K Gold Plated |
| WEIGHT & THICKNESS |
185-190g | 14.6 mm |
| CRYSTAL & LUME |
Domed Sapphire | Super-LumiNova® |
| DIMENSIONS |
41 mm × 50 mm × 14.6 mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE |
50m rating — professional pressure test recommended before swimming |
Collector Q&A
Q: Does the GMT hand function independently like the genuine Tudor MT5652?
A: Yes, the custom Asian GMT movement features a jumping local hour hand. You can adjust the local hour in one-hour increments via the crown, which also drives the date wheel forward or backward, accurately mimicking the genuine traveler’s GMT functionality.
Q: Are the gold mid-links on the bracelet solid gold or plated?
A: The mid-links, bezel edge, and crown are heavily electroplated with 18K gold (often referred to as wrapped or high-grade plated in the replica market). They are not solid gold, so care should be taken to avoid deep scratches that could reveal the stainless steel base.
Q: Does the clasp on this ZF model include the T-fit micro-adjustment system?
A: No. Consistent with the specific genuine M79833MN-0001 reference replicated here, this ZF edition features the traditional Tudor fold-over safety clasp with standard micro-adjust holes, not the newer T-fit sliding mechanism.
Q: What is the most common known quirk with this specific ZF GMT replica?
A: While the jumping hour movement is generally reliable, the date wheel alignment can occasionally sit marginally high or low in the window on certain dates. Additionally, the 48-click bezel may have slight back-play compared to the exceptionally tight tolerances of the genuine article.
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