ETA Caliber 2671

Mannufacturer	ETA
Caliber Number	2671
Movement Type	Automatic, self-winding mechanical
Lignes	7 3/4”’
Diameter	17.2mm
Height	4.8mm
Jewels	25
Power Reserve	~38 hours
Vibrations Per Hour	28,800 vph, 4Hz
Shock System	Incabloc
Regulator System	Etachron with fine timing device
Features	Central hours; central minutes; central sweeping seconds
Hacking Seconds?	Yes
Country of Manufacture	Switzerland, Swiss made (v8)
Known Models	Hamilton Face to Face (H32856705)

This ETA caliber 2671 was found in a Hamilton Jazzmaster Face2Face watch which has dual automatic movements.

Because of the double movement design, small movements were necessary. The small size is a notable feature of the 2671.