The Hublot Big Bang Integral Sky Blue 451.EX.5120.EX is a 42mm integrated-bracelet chronograph crafted in satin-finished and polished sky blue ceramic, including a matching integrated ceramic bracelet for a seamless, modern silhouette. The watch is built around Hublot’s in-house UNICO flyback chronograph architecture, presented through a matte blue skeleton dial with a date at 3 o’clock, and it is rated to 100 meters (10 bar) water resistance for genuine daily versatility. This model is widely listed as a Limited Edition (commonly stated as 250 pieces); if you require absolute confirmation for your listing, verification from Hublot or an authorized retailer is recommended.
Power comes from the manufacture HUB1280 UNICO self-winding flyback chronograph movement with a column wheel and double clutch visible from the dial side, delivering approximately 72 hours of power reserve. The case thickness is commonly listed at 14.5mm, and the watch is protected by sapphire crystal with anti-reflective treatment and finished with an integrated ceramic bracelet secured by a titanium deployant clasp.
Specifications:
Brand: Hublot
Collection: Big Bang
Sub-Collection: Big Bang Integral
Reference: 451.EX.5120.EX
Chronograph: Yes (Flyback Chronograph)
Case Diameter: 42 mm
Case Thickness: 14.5 mm
Case Material: Satin-finished and polished Sky Blue Ceramic
Bezel: Satin-finished and polished Sky Blue Ceramic with 6 H-shaped Titanium screws
Dial: Matte blue skeleton dial
Movement: HUB1280 UNICO manufacture self-winding flyback chronograph (column wheel)
Power Reserve: Approximately 72 hours
Crystal: Sapphire with anti-reflective treatment
Water Resistance: 100 meters / 10 bar
Bracelet: Integrated sky blue ceramic bracelet
Clasp: Titanium deployant buckle clasp
Functions: Flyback chronograph, hours, minutes, small seconds, date
Limited Edition: Commonly listed as limited to 250 pieces (verification recommended if required)
Key Features:
-
42mm integrated case-and-bracelet construction in sky blue ceramic
-
Manufacture HUB1280 UNICO self-winding flyback chronograph with column wheel
-
Matte blue skeleton dial with date at 3 o’clock
-
Approximately 72-hour power reserve
-
100m / 10 bar water resistance
-
14.5mm case thickness (commonly listed)
-
Titanium deployant clasp for secure daily wear
FAQs
1. Is the Hublot 451.EX.5120.EX a chronograph?
Yes. It is a self-winding flyback chronograph powered by Hublot’s manufacture HUB1280 UNICO movement.
2. What is the case size of the Big Bang Integral Sky Blue?
The case diameter is 42mm.
3. What is the power reserve of the HUB1280 UNICO movement?
It provides approximately 72 hours of power reserve.
4. What materials are used for the case and bracelet?
This reference uses a sky blue ceramic case and an integrated sky blue ceramic bracelet.
5. What is the water resistance rating?
The watch is rated to 100 meters (10 bar).
