Breitling Caliber 73

Breitling Caliber 73

Breitling Caliber 73

Caliber Number73
Base CaliberETA caliber 251.264
TypeQuartz (mechaquartz / SuperQuartz)
Diameter13 1/4”’ (30mm)
Battery Cell Number394 (SR936SW)
Claimed Battery Life5-6 yrs
FunctionsHours, minutes, chronograph seconds, 1/10 seconds, 60 seconds, 60 minutes, 12 hour, add and split chrono functions, date, second time zone
Known Models
Chronospace Evo Night Mission (add more in the comments)

The Breitling caliber 73 is a superquartz movement that is a Certified Chronometer (COSC). It is found in many Breitling quartz chronograph watches including but not limited to the Avenger Seawolf Chronograph, Colt Chronograph II, Emergency Misson, SuperOcean Chronograph M2000, Chronospace Evo Night Mission.

Not In-House

Despite other watch blogs claiming that the Breitling caliber 73 is an in-house movement, it is actually based off the ETA Thermaline SuperQuartz caliber 251.264. It is a hybrid mechanical/quartz movement.

PowerDrive and PreciDrive

In ETA’s own words:

The PowerDrive technology integrated into all these movements controls the motor drive and increases the speed of rotation of the hands on the dial to 200 Hz, that is to say 200 hand jumps per second. It offers the manufacturer a great deal of freedom in the display combinations. This arrangement provides one more remarkable dynamic to a modern three-counter, sport-chic look that is already well known and appreciated by the general public. The PreciDrive technology integrated into a calibre will allow the watch to achieve exceptional precision of +/- 10 seconds a year, a score equivalent to a precision of 0.027 seconds a day.


The caliber 73 is a SuperQuartz movement and COSC, therefore, Breitling claims that it is 10 times more accurate than a standard quartz movement.

Date Setting

This movement sets time just like most other watches, with exception of the date. The date is mechanical. Instead of a typical quickset date where rotating the drown in position 1 flips the calendar wheel, the date is advanced by the hour hand jumping forward in one hour increments (similar to the Rolex GMT-Master II or quartz Omega Seamaster for example). This feature also assists in setting the second time zone.

Breitling Caliber 73 Pushers

Breitling Caliber 73 Coil

Breitling Caliber 73 Coils

Breitling Caliber 73 Serial Number

Breitling Caliber 73 Eta

Breitling Caliber 73 251264

Breitling Caliber 73 Battery

Share your comments and experience with the Breitling cal. 73 in the comments below…

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