Specifications
A concise reference view of the case, dial, bracelet and movement details buyers compare first.
Case
| Diameter | 42 mm |
|---|---|
| Thickness | 13.5 mm |
| Shape | Round |
| Material | White Ceramic |
| Bezel | Fixed porthole bezel |
| Bezel material | White Ceramic |
| Bezel insert | White |
| Crown | Screw-down crown |
| Caseback | Sapphire display back |
| Crystal | Sapphire |
| Crystal coating | Anti-reflective coating |
| Pushers | Yes |
| Water resistance | 10 bar / 100 m |
Reference details
| Gender | Men's |
|---|
Dial and bracelet
| Dial | Matte grey skeleton |
|---|---|
| Dial finish | Skeletonized HUB1280 chronograph dial with red and white accents |
| Markers | Applied baton hour markers |
| Luminous display | Yes |
| Bracelet | Integrated bracelet |
| Bracelet material | White Ceramic |
| Strap color | White |
| Clasp | Titanium deployant buckle clasp |
| Buckle material | Titanium |
Movement
| Calibre | Hublot HUB1280 |
|---|---|
| Calibre family | UNICO |
| Movement | automatic |
| Power reserve | 72 hours |
| Frequency | 28,800 vph |
| Jewels | 43 jewels |
| In House Movement | Yes |
Recent price movement
Tracking 4 daily market snapshots since July 2026. The solid line shows the median delivered estimate and the dashed line tracks the lowest available offer; the dotted line shows the median among offers listed with both original box and original papers.
About this reference
The 451.HX.1123.HX combines the integrated silhouette of the Big Bang Integral with an all-white ceramic treatment. At 42 mm, the case and bracelet keep the profile visually continuous, while the matte grey skeleton dial introduces a more measured field beneath the bright exterior. Red and white accents animate the open-worked chronograph display, and sapphire with anti-reflective treatment protects the view. A 100-metre water-resistance rating gives the unusually light palette practical substance.
The automatic HUB1280 drives the chronograph through an in-house column-wheel architecture. Within this white ceramic Integral, the 43-jewel, 354-part calibre pairs flyback timing and a date display with 72 hours of reserve. The result is an Integral that relies on contrast within the dial rather than contrast between case materials. White ceramic establishes the continuous outer form; the exposed Unico mechanics supply the movement and visual energy underneath.










