ETA Caliber 2850

Manufacturer	ETA
Caliber Number	2850
Movement Type	Mechanical, manual-wind
Lignes	11.5”’
Diameter	25.6mm
Height	4.3mm
Jewel Count	Varies
Beat Rate	28,800 vph, 4 Hz
Lift Angle	52 degrees
Power Reserve	~38 hours
Hand-Windable?	Yes
Anti-Shock Device	Incabloc
Hand Count	3
Functions	Central hours; central minutes; central sweeping seconds
Hacking Seconds?	Yes
Country of Manufacture	Switzerland, Swiss made
Known Models	(Add your watch to the comments below…)

The ETA caliber 2850 is a vintage time-only manual-wind mechanical movement. It is a true no-date movement.

This caliber is an early member of the ETA 28XX family of movements.

Documentation for this caliber was found as far back as 1976.

Additional Resources:

• More ETA watch movements

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