The caliber 12 is an automatic chronograph movement. It was introduced in 1969 as part of the Chronomatic family, developed collaboratively by Heuer, Buren/Hamilton, Breitling, and Dubois-Depraz under Project 99. The movement measures 7.7mm in height with a micro-rotor, operates at 21,600 vph, and features a bi-compax chronograph layout with Incabloc shock protection. It was used in Heuer Daytona, Monaco, Carrera, and Autavia models before production ended in the late 1970s.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Frequency
21,600 vph (3 Hz)
Height
7.7mm
Display Type
Analog
Rotor Type
Micro Rotor
Shock Protection
Incabloc
COMPLICATIONS
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
DiscontinuedLAUNCH YEAR
1969COUNTRY
SwitzerlandALSO KNOWN AS
FOR WATCH DEALERS
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