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Description
ZF Factory Tudor Black Bay Bronze Bucherer Blue M79250BB-0001
The industry standard for aluminum bronze alloy composition and matte dial texture accuracy.
Powered by Asian Sea-Gull 2824 Clone
The heartbeat of this replica is the Asian custom Sea-Gull 2824 automatic mechanical movement. Chosen for its structural durability and widespread availability of replacement parts, this caliber operates at 28,800 vph, ensuring a smooth sweep for the distinctive snowflake seconds hand. Before dispatch, the movement undergoes to verify amplitude and beat error tolerances. While some batches feature MT5601 decorative plates to mimic the genuine in-house caliber, the core mechanics remain the highly dependable 2824 architecture.
Standard Asian 2824 clone movements typically perform within ±10–15 seconds per day out of the factory, with excellent potential for tighter regulation by a qualified watchsmith.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: Time-only display (no ghost date position depending on exact batch iteration)
- ✅ Winding Direction: Bidirectional rotor winding
Technical Specifications
The 43mm case features a substantial 14.6mm thickness and a 23mm lug width. The entire case is executed in a specialized aluminum bronze alloy, finished with a fine satin brushing. The caseback utilizes bronze-colored PVD steel to prevent skin oxidation.
Accurately replicating the deep, matte micro-grain texture of the genuine Bucherer edition. It features the vintage 3-6-9 Arabic numeral layout, rose gold plated hands, and dense Super-LumiNova application for strong, even nocturnal legibility.
A 60-click unidirectional stainless steel bezel core fitted with a matte blue anodized aluminum insert. The color tone matches the dial perfectly, and the coin-edge grip provides a satisfying, precise ratchet action.
Fitted with a high-density blue fabric strap featuring a central bronze-colored stripe, paying homage to French Navy parachute straps. Secured via a solid bronze pin buckle that will patina alongside the case.
Why ZF for This Reference?
Many collectors ask: Why not XF or other competing factories?
ZF dominates the Tudor Black Bay Bronze category strictly due to their metallurgical accuracy. While competing factories often use standard brass or inferior copper blends that rapidly develop toxic-looking green verdigris, ZF invested in the correct aluminum bronze alloy. This ensures the watch ages with the correct dark, matte brown patina seen on genuine M79250BB-0001 models.
Full Disclosure: The Asian 2824 rotor can be slightly audible during rapid wrist movement compared to the silent genuine MT5601, and the included fabric strap requires a brief break-in period to overcome initial stiffness.
Data Sheet
| MODEL REFERENCE | M79250BB-0001 |
| FACTORY / VERSION | ZF Factory 1:1 Edition |
| MOVEMENT | Asian Sea-Gull 2824 Automatic |
| CASE MATERIAL | Aluminum Bronze Alloy (PVD Steel Caseback) |
| WEIGHT & THICKNESS | [unconfirmed] g | 14.6 mm |
| CRYSTAL & LUME | Domed Sapphire | Super-LumiNova® |
| DIMENSIONS | 43 mm × [unconfirmed] mm × 14.6 mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | 50m — professional pressure test recommended before swimming |
Collector Q&A
Q: Does the ZF case develop a green patina like brass?
A: No. ZF utilizes a specialized aluminum bronze alloy identical in concept to the genuine M79250BB-0001. This material develops a dark, matte brown oxidation layer over time rather than the toxic-looking green verdigris associated with cheaper brass replicas.
Q: Will the bronze caseback turn my wrist green?
A: To prevent skin reactions and discoloration, ZF correctly replicates the genuine Tudor design by utilizing a bronze-colored PVD-treated stainless steel caseback, ensuring the bronze alloy never directly contacts your skin.
Q: What size strap do I need if I want to swap the factory fabric band?
A: This specific 43mm Black Bay Bronze features an uncommon 23mm lug width. Standard 22mm or 24mm straps will not fit correctly; you must source straps specifically cut for a 23mm lug span.
Q: How noticeable is the rotor noise on this Asian 2824 movement?
A: The Asian Sea-Gull 2824 workhorse is highly reliable but utilizes a ball-bearing rotor that can be slightly audible in a quiet room during rapid wrist movement. A minor lubrication service by a local watchsmith can significantly dampen this sound if it bothers you.
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