Breitling
Breitling Chronomat 44 GMT AB0420
The Breitling Chronomat 44 GMT (reference AB0420) is a 44 mm stainless steel watch with a black / Blue / Silver / Grey / Brown dial. It runs on the automatic caliber B04 with a 70-hour power reserve. It is no longer in production.
Specifications
Case
- Reference
- AB0420
- Collection
- Chronomat
- Case size
- 44 mm
- Case material
- Stainless steel
- Case shape
- Round
- Crystal
- Sapphire
- Bracelet / strap
- Bracelet / Rubber strap / Leather strap (Pilot bracelet, stainless steel)
Dial and bezel
- Dial
- Black / Blue / Silver / Grey / Brown
- Bezel
- Unidirectional rotating dive bezel, 0-60, rider tabs
Movement
- Movement
- Automatic
- Caliber
- B04
- Power reserve
- 70 hours
- Frequency
- 28,800 vph
- Functions
- Small seconds, Date, Chronograph, GMT
Production
- Production
- Discontinued
Dial versions
This reference was made with these dials and finishes.
AB042011.BB56.152S Onyx Black
AB042011.BB56.152S
Onyx Black
AB042011.BB56.375A Onyx Black
AB042011.BB56.375A
Onyx Black
AB042011.C851.375A Metallica Blue
AB042011.C851.375A
Metallica Blue
AB042011.C852.375A Blackeye Blue
AB042011.C852.375A
Blackeye Blue
AB042011.F561.375A Blackeye Grey
AB042011.F561.375A
Blackeye Grey
AB042011.G745.375A Sierra Silver
AB042011.G745.375A
Sierra Silver
AB042011.G745.437X Sierra Silver
AB042011.G745.437X
Sierra Silver
AB0420B9.BB56.152S Onyx Black
AB0420B9.BB56.152S
Onyx Black
AB0420B9.BB56.375A Onyx Black
AB0420B9.BB56.375A
Onyx Black
AB0420B9.BB56.743P Onyx Black
AB0420B9.BB56.743P
Onyx Black
How it compares within the Chronomat family
Side by side with other references in the same collection, from the catalog.
| Reference | Size | Material | Dial | Caliber | Years |
|---|---|---|---|---|---|
| AB0420 (This watch) | 44 mm | Stainless steel | Black / Blue / Silver / Grey / Brown | B04 | — |
| A10380 | 36 mm | Stainless steel | — | 10 | 2020– |
| A17356 | 38 mm | Stainless steel | Ice Blue / Pink / White | 17 | 2021– |
| A32398 | 40 mm | Stainless steel | — | 32 | 2021– |
| A77310 | 32 mm | Stainless steel | — | 77 | 2020– |
| AB0134 | 42 mm | Stainless steel | — | B01 | 2020– |
| AB0136 | 44 mm | Stainless steel | Black / Blue / Green / Anthracite | B01 | 2021– |
| AB0158 | 42 mm | Stainless steel | — | B01 | 2026– |
| AB3114 | 40 mm | Stainless steel | — | B31 | — |
About the Chronomat family
The Chronomat name first appeared on a 1940s Breitling chronograph with a slide-rule bezel. The modern Chronomat was introduced in 1984, with rider tabs on the bezel, and became the brand's main sports chronograph. In 2009 it was the first watch to carry Breitling's in-house caliber B01.
The 2020 generation brought back the Rouleaux bracelet with its rounded links. The catalog lists more than two hundred references, including chronographs, three-hand automatics, GMTs and smaller models, in steel, red gold, Blacksteel and two-tone. Dealers identify the generation, size and caliber from the reference and check the bracelet.
Quick answers
- What size is the Breitling Chronomat 44 GMT AB0420?
- The Breitling Chronomat 44 GMT AB0420 has a 44 mm case.
- What movement does the Breitling Chronomat 44 GMT AB0420 use?
- It uses the automatic caliber B04, with a 70-hour power reserve.
- Is the Breitling Chronomat 44 GMT AB0420 still in production?
- Discontinued.
- What is the Breitling Chronomat 44 GMT AB0420 made of?
- The case is stainless steel. Bracelet or strap: Bracelet / Rubber strap / Leather strap (Pilot bracelet, stainless steel).
- Which dials was the Breitling Chronomat 44 GMT AB0420 made with?
- The catalog lists 5 dials: Onyx Black, Metallica Blue, Blackeye Blue, Blackeye Grey, Sierra Silver.
Catalog facts checked September 2026.