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Description
BBF Hublot Big Bang Unico 42mm Orange Ceramic 441.CU.5910.RX
BBF achieves a critical milestone by combining high-temperature colored ceramic with a functionally accurate 60-minute HUB1280 clone caliber.
Powered by Custom HUB1280 Clone
The movement architecture is heavily modified from an Asian 7750 base to relocate the minute counter to 3 o’clock with a full 60-minute capacity, accurately reflecting the genuine Unico caliber. It features an 8 o’clock horizontal clutch and a 9 o’clock small seconds wheel, providing the correct visual layout through the open-worked dial.
Rated at ±10–15 seconds per day, which is standard tolerance for heavily modified 7750 chronograph bases.
- ✅ Power Reserve: Approximately 36 hours
- ✅ Complications: 60-minute chronograph, skeletonized date wheel, small seconds
- ✅ Winding Direction: Unidirectional
Technical Specifications
The 42mm case utilizes proprietary sintering to ensure the vivid orange hue is uniform throughout the material, yielding excellent scratch resistance.
Open-worked design exposing the modified date wheel and gear train. Note that the physical dial accents are vibrant orange, superseding the #006039 system annotation code.
Secured by six polished titanium H-shaped screws with correct recess depth and alignment tolerances.
Features an integrated fitment mechanism paired with a black-plated titanium deployant buckle.
Why BBF for This Reference?
Many collectors ask: “Why not ZF?”
While ZF produces excellent 44mm Unico models, BBF currently holds a significant advantage in the 42mm variants regarding high-temperature colored ceramic. The proprietary sintering process used by BBF ensures structural integrity and color uniformity that competitors struggle to match in the 42mm form factor.
Full Disclosure: Because the HUB1280 clone relies on an Asian 7750 base, the chronograph pusher action feels noticeably stiffer than the genuine column-wheel mechanism, and the unidirectional winding rotor exhibits characteristic free-spin wobble.
Data Sheet
| MODEL REFERENCE | 441.CU.5910.RX |
| FACTORY / VERSION | BBF Edition |
| MOVEMENT | Custom HUB1280 Clone |
| CASE MATERIAL | Orange Ceramic |
| WEIGHT & THICKNESS | [unconfirmed] g | ~14.5 mm |
| CRYSTAL & LUME | Sapphire with Double AR | Super-LumiNova |
| DIMENSIONS | 42mm × [unconfirmed] × 14.5mmManual measurements — minor tolerances apply. |
| WATER RESISTANCE | Stated 30m — professional pressure test recommended before swimming |
Collector Q&A
Q: Does the chronograph minute counter track 30 or 60 minutes?
A: Unlike standard 7750 clones that are mechanically limited to 30 minutes, the BBF HUB1280 movement has been modified to feature a fully functional 60-minute counter at the 3 o’clock position, matching the functionality of the genuine caliber.
Q: Is the case genuine ceramic or just PVD-coated steel?
A: The case and bezel are constructed from solid, high-temperature sintered orange ceramic. The color is uniform throughout the material, making it highly scratch-resistant rather than a surface-level coating.
Q: Does the skeletonized date wheel function correctly?
A: Yes, the skeleton date wheel is fully integrated into the 3 o’clock sub-dial and advances cleanly, replicating the visual depth and mechanical layout of the original Unico caliber.
Q: What is the main drawback of this BBF replica?
A: Because the underlying base movement is a heavily modified Asian 7750, the chronograph pushers require firmer pressure to actuate compared to a genuine column-wheel chronograph, and the unidirectional winding rotor produces noticeable free-spin noise.
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