Family: ETA 2800 series17/21/25 jewels28,800 vph (8 Hz)
The ETA 2870 was originally sold as a non-hacking movement with an optional hack feature. The hacking part (stop lever, ETA part number 9433) can be added to enable hacking functionality. The fine timing device (regulator) was also optional when ordering the ebauches from ETA.
TECHNICAL SPECIFICATIONS
Movement Type
Automatic
Jewel Count
17/21/25 jewels
Frequency
28,800 vph (8 Hz)
Display Type
Analog
Rotor Type
Central Rotor
Winding
Automatic (Bidirectional)
Shock Protection
Incabloc
FEATURES
Sweep Seconds
QUICK FACTS
BRAND
TYPE
AutomaticSTATUS
DiscontinuedMANUFACTURE
In-houseCALIBER FAMILY
ETA 2800 seriesCOUNTRY
SwitzerlandALSO KNOWN AS
eta 2870