Hublot
Hublot Big Bang Unico 44 Black Magic 421.CI.1170.RX
The Hublot Big Bang Unico 44 Black Magic (reference 421.CI.1170.RX) is a 44 mm Black ceramic (Black Magic) watch with a skeleton dial. It runs on the automatic caliber HUB1280 with a 72-hour power reserve and is water resistant to 100 m.
Specifications
Case
- Reference
- 421.CI.1170.RX
- Collection
- Big Bang
- Case size
- 44 mm
- Case material
- Black ceramic (Black Magic)
- Case shape
- Round
- Crystal
- Sapphire
- Water resistance
- 100 m
- Bracelet / strap
- Rubber strap
Dial and bezel
- Dial
- Skeleton
Movement
- Movement
- Automatic
- Caliber
- HUB1280
- Power reserve
- 72 hours
- Frequency
- 28,800 vph
- Functions
- Flyback chronograph, Date, Skeleton
Production
- Production
- Current
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 |
|---|---|---|---|---|---|
| 421.CI.1170.RX (This watch) | 44 mm | Black ceramic (Black Magic) | Skeleton | HUB1280 | — |
| 301.SB.131.RX | 44 mm | Stainless steel/ceramic | Black | HUB4100 | 2005– |
| 301.SM.1770.RX | 44 mm | Stainless steel/ceramic | Black | HUB4100 | — |
| 301.SX.1170.RX | 44 mm | Stainless steel | Black | HUB4100 | — |
| 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 size is the Hublot Big Bang Unico 44 Black Magic 421.CI.1170.RX?
- The Hublot Big Bang Unico 44 Black Magic 421.CI.1170.RX has a 44 mm case.
- What movement does the Hublot Big Bang Unico 44 Black Magic 421.CI.1170.RX use?
- It uses the automatic caliber HUB1280, with a 72-hour power reserve.
- How water resistant is the Hublot Big Bang Unico 44 Black Magic 421.CI.1170.RX?
- It is water resistant to 100 metres.
- Is the Hublot Big Bang Unico 44 Black Magic 421.CI.1170.RX still in production?
- Yes, it is a current reference.
- What is the Hublot Big Bang Unico 44 Black Magic 421.CI.1170.RX made of?
- The case is Black ceramic (Black Magic). Bracelet or strap: Rubber strap.
Catalog facts checked September 2026.