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ETA 2661

 

ETA 2661ETA 2661

Description

In the early 1970ies, ETA lauched their final movement series of 7 3/4 sized movements. Their variations ranged from a simple handwinding movement with 21600A/h (ETA 2640) to the high-beat selfwinding movement with day and date (ETA 2678).
From this series originates this caliber ETA 2661, a high-beat movement with date display.

 

 

 Technical data

ManufacturerETA
Caliber2661
Number of jewels17
EscapementAnchor with pallets
BalanceNickel
Shock protection(s)Incabloc
Balance cock directioncounterclockwise
Hairspring studmoveable
Regulator typeHairspring key
Movement constructionFork
Escapement wheel, Fourth wheel, Third wheel, Large driving wheel
Mainspring barrel
Winding mechanismyoke
FeaturesSCD,QG,RDR
FunctionsHour, minute, second, day
Beats per hour28800
Size73/4'''
Image in Flume Werksucher K3N1 -
ETA 2661ETAETA26617 3/4''''''ETA 266117 Jewels, 7 3/4'''''', 28800 A/h, SCD,QG,RDR
Factsheet

 

 

Usage gallery

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