How about the BB Factory Hublot Big Bang 301.CM.130.RX replica watch?

Introduction​

The Hublot Big Bang 301.CM.130.RX is one of the most iconic luxury sports watches, known for its bold design, ceramic case, and skeletonized dial. While the genuine version costs a fortune, the BBF Factory replica offers an impressive alternative with near-perfect craftsmanship at a fraction of the price. Today, I’ll dive deep into this replica’s build quality, movement, and overall accuracy compared to the original.

First Impressions & Case Construction​

The BBF Factory Big Bang 301.CM.130.RX replicates the 44mm case size of the original, crafted from black ceramic with a satin and polished finish. The signature 6 H-shaped titanium screws on the bezel are perfectly aligned, matching the gen’s industrial aesthetic. The caseback features a sapphire crystal display, revealing the modified movement inside.
One standout feature is the "ears" design on the sides of the case, a unique element that BBF has replicated flawlessly. The rubber-coated pushers and screw-down crown with the engraved Hublot logo add to the premium feel.

Dial & Functionality​

The semi-skeletonized black dial is where this replica truly shines:

• Subdials: The 9 o’clock small seconds, 6 o’clock 12-hour counter, and 3 o’clock 30-minute chronograph are all perfectly positioned.
• Date Window: The slanted date window at 4:30 is identical to the gen, with crisp font alignment.
• Lume: The stick indices and hands feature Super-LumiNova, offering decent nighttime visibility.

The red-tipped chronograph seconds hand (a signature of early Big Bang models) is accurately reproduced, adding to the sporty appeal.

Movement: Reliability & Accuracy​

The BBF version uses a modified Shanghai 7750 automatic chronograph movement (mimicking the HUB4100). While not a true clone, it provides:

• Smooth chronograph operation (start/stop/reset functions work flawlessly).
• 28,800 vph beat rate, matching the gen’s smooth sweep.
• ~42-hour power reserve, similar to the original.

The rotor noise is slightly louder than the gen, but this is a common trait in 7750-based replicas.

Bracelet & Comfort​

The structured rubber strap is incredibly close to the original, with:

• Precision texturing for grip.
• Deployant clasp with black ceramic and titanium elements.
• One-Click quick-release system for easy strap changes (a feature introduced in later Unico models).

Despite the 44mm size, the watch wears comfortably due to the lightweight ceramic construction.

Final Verdict: How Close Is It to Gen?​

Category	Accuracy (vs. Gen)
Case & Bezel	95% – Near-perfect ceramic finish, screws, and dimensions.
Dial & Hands	90% – Minor differences in lume brightness.
Movement	85% – Functional but not a true HUB4100 clone.
Strap & Clasp	95% – Almost indistinguishable from gen.

Pros:
Exceptional ceramic case finish.
Accurate chronograph function.
High-quality rubber strap with quick-release.
Cons:
Movement noise slightly noticeable.
Lume could be brighter.

Conclusion: Is It Worth It?​

For ~$500-$700, the BBF Factory Hublot Big Bang 301.CM.130.RX is one of the best replicas available. It captures the essence of the gen with 95% accuracy in aesthetics and solid functionality. If you love the Big Bang’s bold design but don’t want to spend $15K+, this is a fantastic alternative.
Rating: 9.5/10

What do you think? Have you tried this rep? Share your thoughts below!