Breitling Caliber B13
Breitling Caliber B13

Breitling Caliber B13

BrandBreitling
Caliber Number13, B13
In-House?
No
Base Caliber
ETA 7750
Movement TypeAutomatic, self-winding mechanical, chronograph
Chronometer Spec?
Yes (COSC)
Lignes13.25”’
Diameter
30mm
Height
7.9mm
Jewel Count
25 jewels
Beat Rate / Frequency
28,800 bph / 4 Hz
Lift Angle
49 degrees
Power Reserve
~48 hours
Rotor Type
Ball-bearing system
Hand-Windable?
Yes
Anti-Shock Device
Incabloc
Regulator
ETACRHON
Hand Count6
FunctionsCentral hours; central minutes; central chronograph seconds; small seconds subdial at 9:00; 30 minutes counter at 12:00; 12 hours counter at 6:00; date at 3:00
Hacking Seconds?
Yes
Country of ManufactureSwitzerland, Swiss made
Known Models
(Add your watch to the comments below…)

The Breitling caliber B13 is essentially a chronometer grade ETA caliber 7750 with Breitling branding on the rotor.

The Breitling 13 was used in a wide range of watches, possibly the most used calibre of the brand (at least during a certain period of time).

Breitling B13 VS B01:

You may see questions and reviews comparing the B13 to Breitling’s in-house caliber B01. Despite the comparisons, the two are not related other than the fact that by introducing their own in-house movement, the brand was able to wean off of their dependence on ETA supplied 7750 movements.

On the dial side of things, the most notable difference is the layout of the subdials. The B13 has a 12-6-9 subdial layout, whereas the B01 has a 3-6-9 layout.

Mechanically, the chronograph systems are different with the B13 using a three-plane cam system and the B01 using a column wheel with a vertical clutch.

You may find that watches with the B13 can be obtained at a lower cost than the B01 models. Beyond that, parts and repair for the B13 is far more accessible since it uses widely available parts, and is serviceable by most experienced watchmakers. In contrast, the B01 would be more difficult to find parts due to availability being limited to watchmakers with a Breitling parts account, technical documentation as well.

Additional Resources:

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