Hublot
Hublot Big Bang Alarm Repeater 403.NM.0123.RX
The Hublot Big Bang Alarm Repeater (reference 403.NM.0123.RX) is a titanium watch.
Specifications
Case
- Reference
- 403.NM.0123.RX
- Collection
- Big Bang
- Case material
- Titanium
Dial versions
This reference was made with these dials and finishes.
403.NM.0123.RX
How it compares within the Big Bang family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| 403.NM.0123.RX (This watch) | — | Titanium | — | — | — |
| 301.SB.131.RX | 44 mm | Stainless steel/ceramic | Black | HUB4100 | 2005– |
| 301.SM.1770.RX | 44 mm | Stainless steel/ceramic | Black | HUB4100 | — |
| 421.CI.1170.RX | 44 mm | Black ceramic (Black Magic) | Skeleton | HUB1280 | — |
| 421.NM.1170.RX | 44 mm | Titanium/ceramic | Skeleton | HUB1280 | — |
| 421.NX.1170.RX | 44 mm | Titanium | Skeleton | HUB1280 | — |
| 441.CI.1171.RX | 42 mm | Black ceramic (Black Magic) | Skeleton | HUB1280 | — |
| 441.NM.1171.RX | 42 mm | Titanium/ceramic | Skeleton | HUB1280 | — |
| 441.NX.1171.RX | 42 mm | Titanium | Skeleton | HUB1280 | — |
About the Big Bang family
The Big Bang was introduced in 2005 as a 44 mm chronograph built from layers of different materials, with the six H-shaped screws on the bezel inherited from the original Hublot. It launched the brand's Art of Fusion idea and quickly became its main line.
The catalog lists more than a hundred references, including chronographs with the in-house Unico movements such as the HUB1242 and HUB1280, in King Gold, ceramic, titanium, carbon and sapphire. Dealers identify the generation, size and material from the reference and check the strap system and papers.
Quick answers
- What is the Hublot Big Bang Alarm Repeater 403.NM.0123.RX made of?
- The case is titanium.
Catalog facts checked October 2026.