Breitling
Breitling Breitling for Bentley B05 Unitime Black AB0521U4B.C654.78X.A20B.A1
The Breitling Breitling for Bentley B05 Unitime Black (reference AB0521U4B.C654.78X.A20B.A1) is a watch. It runs on the caliber B05.
Specifications
Case
- Reference
- AB0521U4B.C654.78X.A20B.A1
- Collection
- Bentley
Movement
- Caliber
- B05
Dial versions
This reference was made with these dials and finishes.
AB0521U4B.C654.78X.A20B.A1
AB0521U4B.C654.78X.A20B.A1
How it compares within the Bentley family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| AB0521U4B.C654.78X.A20B.A1 (This watch) | — | — | — | B05 | — |
| 4436413.BD27.220S.M20DSA.2 | — | — | — | — | — |
| A1336212.A575 | — | — | — | — | — |
| A1336212.C649 | — | — | — | — | — |
| A1336233/Q614/980A | — | Stainless steel | — | — | — |
| A1636212.H534 | — | — | — | — | — |
| A2536212.L505 | — | — | — | — | — |
| R1636212.B882 | — | — | — | — | — |
| R4736212B934 | — | — | — | — | — |
About the Bentley family
Breitling for Bentley was a partnership line with the British carmaker, started in the early 2000s and inspired by Bentley's cars, with large cases, knurled bezels and many chronograph and world-time models.
The catalog lists more than fifty steel references, including models with the B05 world-time caliber. The collection is no longer current, so dealers check the full reference, the condition of the knurled bezel and the bracelet and look for the box and papers.
Quick answers
- What movement does the Breitling Breitling for Bentley B05 Unitime Black AB0521U4B.C654.78X.A20B.A1 use?
- It uses the caliber B05.
Catalog facts checked October 2026.