Breitling
Breitling Chronomat Evolution B1335611/K521
The Breitling Chronomat Evolution (reference B1335611/K521) is a stainless steel / Yellow gold watch with a black dial.
Specifications
Case
- Reference
- B1335611/K521
- Collection
- Chronomat
- Case material
- Stainless steel / Yellow gold
Dial and bezel
- Dial
- Black
Dial versions
This reference was made with these dials and finishes.
B1335611/K521 Black
B1335611/K521
Roman numerals
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 |
|---|---|---|---|---|---|
| B1335611/K521 (This watch) | — | Stainless steel / Yellow gold | Black | — | — |
| 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 is the Breitling Chronomat Evolution B1335611/K521 made of?
- The case is stainless steel / Yellow gold.
Catalog facts checked October 2026.