BBF Factory Hublot Spirit of Big Bang 42mm Titanium (642.NX.7170.RX)
A masterclass in tonneau case construction, featuring the industry’s first true-to-gen Grade 5 Titanium case and an exclusive 1:1 skeletonized HUB4700 clone movement.
Powered by the BBF Exclusive HUB4700 Clone
Powered by a premium 1:1 clone automatic chronograph movement. The genuine HUB4700 is famously based on the high-beat Zenith El Primero architecture. To replicate this complex skeletonized display, BBF utilized a heavily modified and decorated automatic column-wheel chronograph base. The standout achievement here is the 1:1 skeletonized date ring—an industry first that precisely matches the genuine Hublot cutout aesthetics, complete with custom-machined movement bridges visible through the sapphire dial.
Accuracy & Warranty Notice:
Accuracy: ±15 seconds per day (when fully wound). Warranty Policy: A deviation of ±15 seconds per day is considered normal for mechanical movements. If your watch runs significantly outside this range within one year, our warranty will cover adjustment.
- Power Reserve: ~42 Hours (Fully Wound)
- Functionality: Hours, minutes, sweeping running seconds, full chronograph functions, and skeletonized date display.
- Reliability: Thoroughly stabilized gear train with modified plates to ensure smooth chronograph engagement without compromising the structural integrity of the base movement.
Technical Specifications
THE BUILD
Grade 5 Titanium Case
Unlike standard reps using 316L steel or softer Grade 2 Ti, BBF uses authentic aerospace-grade Grade 5 Titanium. This perfectly replicates the genuine multi-layered tonneau construction and feather-light wrist feel.
THE FACE
Sapphire Skeleton Dial
Features an ultra-clear sapphire dial that exposes the HUB4700 mechanics. The hands feature a specialized dynamic light-catching facet finish (七彩纹指针), alongside perfectly applied luminous indices.
THE BEZEL
Satin-Finished Titanium
Exquisitely brushed Grade 5 titanium bezel, secured by Hublot’s iconic polished H-shaped titanium screws. The chamfered edges are flawlessly mirror-polished, identical to the genuine.
REFINEMENT
“One-Click” Strap System
Equipped with a fully functional 1:1 One-Click quick-release mechanism. The premium structured black rubber strap is 100% interchangeable with genuine Hublot bands.
Why We Chose BBF for this Model?
Many clients ask: “Why not TW Factory or other standard versions?”
Here is the honest truth: While competitors offer decent visual replicas of the Spirit of Big Bang, BBF completely dominates in material science and dial mechanics. Competing factories often use 316L steel disguised as titanium, making the watch significantly heavier. BBF is the only factory using genuine Grade 5 Titanium for this specific reference. Furthermore, their exclusive HUB4700 clone features the exact skeletonized date wheel, eliminating the biggest “tell” found on cheaper batches.
Full Disclosure: Due to the hollow nature of a tonneau titanium case and a skeletonized dial, the automatic rotor is slightly louder than the genuine when spun vigorously in a silent room. This is standard acoustic behavior for 7750-based clones in titanium housing.
Data Sheet
| MODEL REFERENCE |
642.NX.7170.RX (Spirit of Big Bang) |
| FACTORY / VERSION |
BBF (Ceiling Level / Top Tier Edition) |
| MOVEMENT |
Custom HUB4700 Automatic Chronograph Clone (28,800 VPH) |
| CASE MATERIAL |
Genuine Grade 5 Titanium (Micro-blasted and Polished) |
| WEIGHT & THICKNESS |
Lightweight Specs | 14.1mm |
| CRYSTAL & LUME |
Scratch-Resistant Sapphire with AR | Swiss Super-LumiNova |
| DIMENSIONS |
42mm (Tonneau Case)
(Manual measurements may have slight discrepancies.)
|
Common Questions about the Spirit of Big Bang
Q: Is this BBF version waterproof?
A: Out of the box, it is sealed for basic daily use (splash/rain proof). However, given the multi-layer case construction and chronograph pushers, we strongly recommend a professional pressure test before swimming.
Q: How does the HUB4700 Clone compare to the Genuine?
A: The genuine uses a high-beat (36,000 vph) Zenith-based movement. The BBF replica utilizes a stable 28,800 vph base to maximize reliability while flawlessly replicating the visual skeletonized aesthetics, notably the exposed date ring and gear train.
Q: Will genuine Hublot straps fit this replica?
A: Yes! BBF has engineered the “One-Click” quick release system to exacting 1:1 tolerances, meaning you can swap in genuine Hublot OEM straps without any modification.
Our “No-Lemon” Guarantee
- Strict QC Process: Every watch undergoes rigorous Timegrapher accuracy testing, waterproof testing, and visual flaw inspection before shipping. You will receive high-res QC photos and videos of your specific watch to approve.
- Customs Safe: We use triangular shipping methods. 100% Customs Clearance Guarantee: If seized by customs, we will reship a new one for free.
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