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Description
HBF Edition: Hublot Big Bang Original Steel 44mm
The industrial icon perfected: Heavyweight 316L steel construction meeting the robust Asian 7750 Chronograph architecture.
Powered by Asian 7750 Valjoux Clone
This model utilizes the industry-standard Asian 7750 Automatic movement, modified to match the Hublot HUB4100 specs. It is a high-beat movement (28,800bph) ensuring a smooth sweep of the seconds hand.
- ✅ Power Reserve: Approx 42 Hours (real-world tested).
- ✅ Functionality: Fully functional Chronograph (Stopwatch). Top pusher starts/stops; Bottom pusher resets.
- ✅ Reliability: HBF has reinforced the gears for better longevity on the chronograph engagement.
Technical Specifications
316L Stainless Steel
Featuring HBF’s signature “Sandwich” construction. The case brushing is vertical and sharp, utilizing high-grade steel to match the gen weight.
Matte Black Dial
Stamped carbon-effect texture on the dial plate with rhodium-plated appliques and satin-finished hands with white luminescent.
Vertical Brushed Steel
Secured by 6 H-shaped polished titanium screws. The vertical brushing on the bezel contrasts beautifully with the composite resin lugs.
Structured Rubber Strap
Soft, scent-free natural black rubber with the classic Big Bang tire-tread pattern, fitted with a steel deployant buckle.
🏆 Why We Chose HBF (Hublot Factory) for this Model?
Many clients ask: “Why not the legendary V6F version?”
Here is the honest truth: While V6F has historically dominated the Big Bang market, stocks have been inconsistent. HBF has stepped up with a fresher batch where the vertical brushing on the steel bezel is noticeably sharper and more defined than older V6F stock. For the Reference 301.SX, the metal finishing is paramount, and HBF nails the industrial look.
Full Disclosure: Like all Asian 7750 movements, the rotor can be slightly audible (the famous “7750 wobble”) in a dead-silent room. This is a mechanical characteristic of the movement architecture, not a defect.
LIVE PREVIEW
Data Sheet
| MODEL REFERENCE | 301.SX.130.RX |
| FACTORY / VERSION | HBF (HB Factory) V2 |
| MOVEMENT | Asian 7750 Automatic Chronograph (28,800vph) |
| CASE MATERIAL | 316L Stainless Steel |
| CRYSTAL | Sapphire with Swiss-Grade AR Coating |
| DIMENSIONS | 44mm x 15.7mm |
Common Questions about the Hublot Big Bang
Q: Is this HBF version waterproof?
A: Out of the box, it is sealed for basic daily use (splash/rain proof). However, because this is a chronograph with pusher seals, we strongly recommend a professional pressure test before swimming.
Q: How does the Asian 7750 compare to the Genuine HUB4100?
A: The genuine HUB4100 is actually based on the Valjoux 7753/7750 architecture. Therefore, this replica movement is structurally very similar to the genuine, offering the same sub-dial layout and date setting functionality.
Q: What is the biggest difference compared to Gen?
A: Under a macro lens, the finishing on the hand edges may not be as clinically perfect as the Swiss counterpart. However, on the wrist at a normal distance, the steel brushing and dial depth make it virtually indistinguishable.
🛡️ Our “No-Lemon” Guarantee
- Actual QC: You will receive high-res QC photos and timegrapher videos of your specific watch before we ship.
- Customs Safe: We use triangular shipping methods to ensure safe delivery to the US/EU/UK.
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