Grail Watch Reference

A Reference Library for Watches from Grail Watch

  • Movement Database
  • Grail Watch Blog
  • The Watch Files Podcast
  • Reference Documents
  • About Grail Watch
  • Email
  • Instagram
  • LinkedIn
  • Twitter

Powered by Genesis

You are here: Home / Movements / ETA 2660

ETA 2660

Last Update: June 10, 2019

Brand:ETA
Family:
ETA 2600 Family
Height:3.50 mm
Jewels:17
Reserve: hours
Frequency:28,800 A/h
Winding:Hand winding
Diameter:17.20 mm (7.75 ligne)
 Image from TimeConnection.com Complications:
Hands:Central Hour Hand, Central Minute Hand, Central Seconds Hand
Distinguishing Technical Characteristics
Hand-Winding
Etachron Regulator
Balance
Balance at 10:30
Production: 1971 – 2004
1910s 1920s 1930s 1940s 1950s 1960s 1970s 1980s 1990s 2000s 2010s 2020s

Cal. 2660 was a compact hand-winding 3-handed movement produced from 1971 through 2004 (or perhaps as late as 2010) by ETA. It was closely related to the automatic ETA 2671 and ETA 2678.

ETA produced a variety of movements in the 2600 family since the 1970s. This includes both automatic and hand-winding variants, 7.75 and 8.75 ligne sizes, and 21,600 A/h and 28,800 A/h versions. In the table below, 8.75 ligne movements are denoted with an asterisk and currently-produced movements in bold.

CalibreManual
21,600 A/h
Manual
28,800 A/h
Automatic
21,600 A/h
Automatic
28,800 A/h
Base2640266026502670
Date2641
2691*
266126512671
2681*
Day/Date264826682658
2688*
2678
Date
Moon Phase
2675
2685*
Images are taken from official publications and are used here for commentary and educational purposes. Copyright is held by the original owner as noted.

Ranfft Pink Pages
Manufacturer Link

Related Posts

ETA 2750 Family

ETA 2800 Family

ETA Flatline 2890 Family

ETA 2893-2

ETA Gabarit 2850 Family

ETA 2893-1