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Hublot Super Clone Watches 1:1 Square Bang Unico Titanium Blue 42MM 821.NX.5170.RX

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          Description

          Description

          BBF Hublot Square Bang Unico Titanium Blue 42mm (821.NX.5170.RX)

          BBF’s mastery of the HUB1280 clone movement and complex square case construction renders this the definitive replica for modern Hublot enthusiasts.

          Powered by Clone HUB1280 Caliber

          The beating heart of this BBF release is the highly sophisticated Clone HUB1280 automatic chronograph movement. Unlike standard 7750 modifications that rely on decorative plates, this caliber features a structurally integrated column wheel at the 6 o’clock position that actively engages when the chronograph pushers are actuated. The skeletonized framework allows for a deep visual inspection of the gear train, while the fully hollowed date wheel rotates smoothly along the perimeter, matching the exact mechanical aesthetic of the genuine Unico.

          ⏱ Accuracy Profile:

          Standard Clone HUB1280 regulation: ±10–15 seconds per day. The complex chronograph module requires ample power; we recommend a full manual wind if the chronograph is to be run continuously.

          • ✅ Power Reserve: Approximately 36 hours
          • ✅ Complications: Hours, minutes, sub-seconds, skeletonized date display, fully functional chronograph
          • ✅ Winding Direction: Unidirectional

          Technical Specifications

          THE BUILDSolid Titanium

          The 42mm x 16mm case utilizes a multi-component sandwich construction. The titanium offers superior corrosion resistance and a noticeably lighter wrist presence compared to steel variants.

          THE DIALSkeletonized Dual-Register

          Features a transparent sapphire dial plate with applied indices and #003A70 blue accents. The double chronograph layout is visually balanced and sharply printed.

          THE BEZELBrushed Titanium

          Secured by six functional, randomly oriented H-shaped titanium screws. The vertical brushing on the flat surface contrasts cleanly with the polished beveled edges.

          THE BRACELETTextured Blue Rubber

          Equipped with the proprietary one-button quick-release system. The deployant clasp locks securely with minimal endplay, matching the OEM tactile feedback.

          Why BBF for This Reference?

          Many collectors ask: “Why not standard market versions?”

          BBF is currently the premier factory investing in the true 1:1 HUB1280 clone architecture. Lesser factories attempting the Square Bang rely on standard Asian 7750 movements with thick decorative plates, which inevitably increases the case thickness beyond 18mm and misaligns the sub-dials. BBF maintains the correct 16mm profile and the functional 6 o’clock column wheel.

          Full Disclosure: Due to the complex skeletonized gear train and heavy automatic winding module, the rotor bearing can be slightly audible during vigorous wrist movement—a common trait in heavily modified clone chronographs.

          Data Sheet

          MODEL REFERENCE821.NX.5170.RX
          FACTORY / VERSIONBBF Edition
          MOVEMENTClone HUB 1280 Automatic
          CASE MATERIALSolid Titanium
          WEIGHT & THICKNESS[unconfirmed] | 16.0mm
          CRYSTAL & LUMESapphire with AR Coating | Standard Super-LumiNova
          DIMENSIONS42mm × [unconfirmed] × 16.0mmManual measurements — minor tolerances apply.
          WATER RESISTANCE>50 Meters — professional pressure test recommended before swimming

          Collector Q&A

          Q: Does the quick-release strap system function like the genuine Hublot?

          A: Yes, the BBF Square Bang features a fully functional one-button quick-release system on the lugs, allowing you to swap compatible replica or genuine Hublot straps without the use of tools.

          Q: Is the column wheel at 6 o’clock functional or purely decorative?

          A: The column wheel visible at 6 o’clock is a fully functional mechanical component of the Clone HUB1280 movement. It rotates and engages directly with the chronograph levers when the pushers are activated.

          Q: Are the H-screws on the titanium bezel supposed to be perfectly aligned?

          A: No. Hublot’s genuine H-screws are threaded directly into the case and therefore sit at random angles; they are never uniformly aligned. The BBF replica correctly replicates this authentic random orientation.

          Q: What is the most notable tell on this BBF replica?

          A: While the movement architecture is highly accurate, the finishing on the innermost skeletonized gears lacks the ultra-fine anglage seen under a loupe on the genuine HUB1280 caliber. Additionally, the winding rotor can be slightly noisier than the OEM counterpart.