BBF Edition — Quick-Release Fluororubber Strap
The BBF iteration of the Spirit of Big Bang 642.OX.0180.RX.1104 stands as a technical benchmark for tonneau-cased Hublot replicas. By meticulously reconstructing the complex “sandwich” case architecture, BBF achieves the exact multi-material integration of rose gold-plated titanium and resin found in the genuine article. This specific release is highly regarded on collector forums for its precise gem-setting geometry on the bezel and the tight tolerances of its one-button strap release system.
Powering the timepiece is the Clone HUB 4700 automatic movement, utilizing a reliable 28,800 vph base caliber heavily modified to simulate the skeletonized depth of the genuine El Primero-based engine. The factory has successfully replicated the custom date wheel and structural bridges, offering a visual complexity rarely achieved in closed-dial clones. Power reserve is strictly rated at approximately 36 hours under normal usage.
The 42mm barrel-shaped case exhibits a refined brushed and polished finish, accented by six signature H-shaped titanium screws. The open-worked dial is protected by an anti-reflective sapphire crystal, allowing clear visibility of the mechanical layers and subtle warm earth-toned structural accents. The synthetic diamonds on the bezel are securely set with consistent spacing, avoiding the uneven alignment often seen in lower-tier gem-set replicas.
- Movement: Clone HUB 4700 Automatic — Approximately 36 hours
- Case Material: Rose gold-plated titanium and resin, 42mm diameter
- Bezel: Rose gold-plated with synthetic diamond setting
- Crystal: Sapphire with anti-reflective treatment
- Bracelet: Customized fluororubber with original-spec folding clasp
- Water Resistance: 30m stated rating — professional pressure test recommended before swimming
This reference is suited for the collector who appreciates avant-garde horology and high-impact wrist presence. It serves as a highly capable alternative for those evaluating complex tonneau designs before committing to a genuine skeletonized piece.




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