Family: 255x17/23 jewels42h power reserve21,600 vph (3 Hz)
ETA 2550 mechanical automatic movement with flat hairspring, sweep seconds, oscillating weight, and pawl winding system. The cal. 2551 variant adds a date (quantième) complication.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
17/23 jewels
Power Reserve
42h
Frequency
21,600 vph (3 Hz)
Diameter
17.2mm
Height
4.5mm
Display Type
Analog
COMPLICATIONS
Date
FEATURES
Sweep Seconds
More ETA SA movements
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
DiscontinuedMANUFACTURE
In-houseCALIBER FAMILY
255xCOUNTRY
SwitzerlandALSO KNOWN AS
eta 2550
FOR WATCH DEALERS
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