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:

Venus Caliber 178

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