Breitling Caliber 04 In-House Movement

Breitling Caliber B04

Breitling Caliber 04 In-House Movement

Manufacturer Breitling
Caliber Number B04
Base Caliber Breitling B01
In-House? Yes
Certified Chronometer? Yes
Vibrations Per Hour 28,800 bph
Power Reserve 70 hours
Jewels 47
Anti-Shock Device
Chronograph System
Column Wheel
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
Transocean Chronograph GMT, Chronomat GMT

The 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:

Seagull Caliber St19

Join our mission to spread movement awareness!

Members Online

  • keepthetime pc1093

Recent Forum Posts

Trending Comments


Sellita Caliber SW200 VS SW200-1

Wow man, you should join the R0l3X club, they're desperately looking for new members, but…


Sellita Caliber SW200 VS SW200-1

Basically you are saying that one of the world's most used workhorse movements is complete…


Slava Caliber 2427

Lum-Tec gave up trying to fix my C2 with this movement, now I'm trying to…

Jeremiah B Leonard

ETA Caliber 955.414

I have one in Gucci watch, says Swiss. See photo….


Seiko Caliber 6N52

Thank you for sharing with the community.


Would love your thoughts, please comment.x