| Brand | Breitling |
| Caliber Number | B04 |
| Base Caliber | Breitling B01 |
| In-House? | Yes |
| Certified Chronometer? | Yes |
| Beat Rate / Frequency | 28,800 bph / 4 Hz |
| Power Reserve | 70 hours |
| Jewel Count | 47 |
| Anti-Shock Device | KIF |
| Chronograph System | Column Wheel |
| Hand Count | 4 |
| Functions | Central hours; central minutes; central chronograph seconds; central GMT hand; small running seconds subdial at 9:00; 1/4 seconds; 30 minutes counter at 3:00; 12 hours counter at 6:00; date at 4:30 |
| Country of Manufacture | Switzerland, Swiss made |
| Known Models | Breitling Transocean Chronograph GMT, Chronomat GMT (Add your watch tot he comments below…) |
Breitling caliber B04 is an in-house automatic chronograph movement with 47 jewels, beating at 28,800vph with a power reserve of about 70 hours.
B04 VS B01:
The Breitling calibre B04 is based on the B01 framework. The main difference is that the B04 adds a central GMT hand (second time zone) complication.
Additional Resources:
Not to be confused with Brietling, 804, B-04
network of watch sites
Recent Comments
Supposedly, hand winding is bad for ETA 2892 and 2824 clone calibres, but I read…
à mon avis, elle date à peu près en 1965
Interesting, what model is that seiko? I couldn't find it
I take it, this is the analogue version of the NN50 which is the all…
The new launched (2025-01-22) Panzera Aquamarine M45 chronograph
Under which watch hmt use 8205 movement
In the "Junghans, PHOENIX, Solar, Germany", one could find the “Ronda, OGC, Swiss Parts, Five…